Inorganic Chemistry

Structure of the atom - Dalton's atomic model
Structure of the atom - Rutherford's atomic model

By the end of the lesson, the learner should be able to:

- Describe the structure of the atom using Dalton's model
- Explain the key postulates of Dalton's atomic theory
- Relate Dalton's model to the concept of matter being made of small particles

- Review with peers the concept of the structure of the atom
- Search for information on Dalton's atomic model
- Draw a representation of Dalton's atomic model

How did Dalton describe the structure of atoms?

- Access and Learn Chemistry Learner's Book pg. 17
- Digital devices
- Charts showing atomic models
- Access and Learn Chemistry Learner's Book pg. 18
- Internet access

- Oral questions - Observation - Written exercises

Inorganic Chemistry

Structure of the atom - Bohr's atomic model
Structure of the atom - Comparing atomic models

By the end of the lesson, the learner should be able to:

- Describe the structure of the atom using Bohr's model
- Explain the concept of energy levels in an atom
- Relate Bohr's model to how electrons orbit the nucleus like planets around the sun

- Search for information on Bohr's atomic model
- Watch animations on atomic models
- Draw and label Bohr's atomic model

How did Bohr improve on Rutherford's atomic model?

- Access and Learn Chemistry Learner's Book pg. 20
- Digital devices
- Charts showing Bohr's model
- Access and Learn Chemistry Learner's Book pg. 21
- Manila papers

- Oral questions - Observation - Written exercises

Inorganic Chemistry

Structure of the atom - Modelling project
Relative Atomic Mass - Atomic number and mass number

By the end of the lesson, the learner should be able to:

- Construct a model of an atom using locally available materials
- Label the nucleus, protons, neutrons and electrons on the model
- Apply creative skills to represent abstract scientific concepts physically

- Use locally available materials to model the structure of the atom
- Label the parts of the atomic model
- Display the constructed model for peer assessment

How can we represent the structure of an atom using locally available materials?

- Access and Learn Chemistry Learner's Book pg. 22
- Locally available materials
- Scissors, glue
- Access and Learn Chemistry Learner's Book pg. 24
- Periodic table
- Digital devices

- Project assessment - Peer evaluation - Observation

Inorganic Chemistry

Relative Atomic Mass - Meaning of isotopes
Relative Atomic Mass - Meaning and calculation

By the end of the lesson, the learner should be able to:

- Define isotopes of an element
- Identify isotopes of common elements
- Relate isotopes to applications like carbon dating and medical imaging

- Brainstorm the meaning of the term isotopes
- Study diagrams showing isotopes of sodium
- Discuss with peers the characteristics of isotopes

Why do atoms of the same element have different masses?

- Access and Learn Chemistry Learner's Book pg. 24
- Digital devices
- Charts showing isotopes
- Access and Learn Chemistry Learner's Book pg. 27
- Periodic table

- Oral questions - Written exercises - Group discussions

Inorganic Chemistry

Relative Atomic Mass - Calculations from isotopic abundances I

By the end of the lesson, the learner should be able to:

- Apply the formula for calculating R.A.M from isotopic abundances
- Calculate R.A.M for elements with two isotopes
- Solve numerical problems involving simple isotopic compositions

- Study worked examples on calculating R.A.M
- Calculate the R.A.M of elements with two isotopes
- Compare calculations with classmates for peer learning

How do you calculate the Relative Atomic Mass of an element from its isotopic abundances?

- Access and Learn Chemistry Learner's Book pg. 27
- Scientific calculators
- Digital devices

- Written exercises - Oral questions - Observation

Inorganic Chemistry

Relative Atomic Mass - Calculations from isotopic abundances II

By the end of the lesson, the learner should be able to:

- Calculate R.A.M for elements with three or more isotopes
- Solve complex problems involving isotopic abundances
- Apply R.A.M calculations to real-world chemistry problems

- Study worked examples on R.A.M calculations for multiple isotopes
- Calculate R.A.M for elements with three isotopes
- Solve practice problems on isotopic abundances

How do you calculate R.A.M for elements with multiple isotopes?

- Access and Learn Chemistry Learner's Book pg. 28
- Scientific calculators
- Digital devices

- Written exercises - Oral questions - Observation

Inorganic Chemistry

Relative Atomic Mass - Determining relative abundance

By the end of the lesson, the learner should be able to:

- Calculate relative abundance of isotopes given R.A.M
- Solve reverse problems on isotopic abundances
- Apply mathematical skills to determine isotope compositions

- Study worked examples on determining relative abundance
- Calculate relative abundances from given R.A.M values
- Practise solving reverse problems

How can you determine the relative abundance of isotopes if you know the R.A.M?

- Access and Learn Chemistry Learner's Book pg. 29
- Scientific calculators
- Digital devices

- Written exercises - Oral questions - Observation

Inorganic Chemistry

Relative Atomic Mass - Practical activity with dice

By the end of the lesson, the learner should be able to:

- Simulate isotopic abundances using dice
- Calculate R.A.M from simulated data
- Connect hands-on activities to abstract chemical concepts

- Carry out activities using dice to simulate isotopic abundances
- Record and calculate R.A.M from simulated data
- Compare results with actual R.A.M values

How can we use a simulation to understand isotopic abundances?

- Access and Learn Chemistry Learner's Book pg. 30
- Coloured dice
- Flashcards

- Practical assessment - Written exercises - Observation

Inorganic Chemistry

Electron arrangement - Energy levels and sub-levels

By the end of the lesson, the learner should be able to:

- Define energy levels and sub-levels in an atom
- Identify the sub-levels present in the first four energy levels
- Relate energy levels to the floors of a building and sub-levels to apartments

- Discuss the relationship between energy levels and orbitals
- Study the sub-levels for the first four energy levels
- Create a table showing energy levels and their sub-levels

How are electrons organized within energy levels?

- Access and Learn Chemistry Learner's Book pg. 32
- Digital devices
- Charts showing energy levels

- Oral questions - Written exercises - Observation

Inorganic Chemistry

Electron arrangement - Types of orbitals

By the end of the lesson, the learner should be able to:

- Describe the shapes of s and p orbitals
- Identify the number of orbitals in each sub-level
- Visualize orbital shapes as regions where electrons are likely found

- Search for information on types of orbitals
- Study diagrams showing shapes of s and p orbitals
- Watch videos showing electrons in various orbitals

What do s and p orbitals look like?

- Access and Learn Chemistry Learner's Book pg. 34
- Digital devices
- Charts showing orbital shapes

- Oral questions - Written exercises - Group discussions

Inorganic Chemistry

Electron arrangement - Aufbau's principle

By the end of the lesson, the learner should be able to:

- State the Aufbau's principle
- Apply the order of filling electrons in orbitals
- Compare electron filling to constructing a building from the foundation upwards

- Search for information on Aufbau's principle
- Study the diagram showing order of filling electrons
- Discuss with peers how electrons fill orbitals

In what order do electrons fill the orbitals in an atom?

- Access and Learn Chemistry Learner's Book pg. 36
- Digital devices
- Aufbau diagram

- Oral questions - Written exercises - Observation

Inorganic Chemistry

Electron arrangement - Writing s and p notation I

By the end of the lesson, the learner should be able to:

- Write electron arrangement of elements 1-10 using s and p notation
- Follow the steps for writing electron arrangements
- Apply the rules for filling electrons in s and p orbitals

- Study worked examples on writing s and p notation
- Draw electron arrangements for elements 1-10
- Practise writing s and p notation independently

How do you write the electron arrangement of an element using s and p notation?

- Access and Learn Chemistry Learner's Book pg. 38
- Periodic table
- Digital devices

- Written exercises - Oral questions - Observation

Inorganic Chemistry

Electron arrangement - Writing s and p notation II

By the end of the lesson, the learner should be able to:

- Write electron arrangement of elements 11-20 using s and p notation
- Complete the electron arrangement table for the first 20 elements
- Connect electron arrangements to the position of elements in the periodic table

- Copy and complete the table of electron arrangements for the first 20 elements
- Compare electron arrangements with classmates
- Identify patterns in electron arrangements

What patterns can you observe in the electron arrangements of the first 20 elements?

- Access and Learn Chemistry Learner's Book pg. 39
- Periodic table
- Digital devices

- Written exercises - Oral questions - Observation

Inorganic Chemistry

Electron arrangement - Practical activity

By the end of the lesson, the learner should be able to:

- Demonstrate electron filling using plastic beakers
- Model electron configurations using locally available materials
- Visualize abstract electron arrangements through hands-on activities

- Carry out activities to illustrate the order of filling electrons using labelled plastic beakers
- Use beads or pebbles to represent electrons
- Discuss the relationship between energy levels and orbitals

How can we demonstrate electron arrangement using locally available materials?

- Access and Learn Chemistry Learner's Book pg. 40
- Plastic beakers
- Beads or pebbles
- Labels

- Practical assessment - Observation - Written exercises

Inorganic Chemistry

Historical development of the periodic table I
Historical development of the periodic table II

By the end of the lesson, the learner should be able to:

- Describe the early attempts to classify elements
- Explain the law of triads and law of octaves
- Trace the evolution of element classification from ancient times

- Brainstorm in groups on the historical development of the periodic table
- Watch a video on the history of the periodic table
- Study the timeline of periodic table development

How did scientists first attempt to organize the elements?

- Access and Learn Chemistry Learner's Book pg. 45
- Digital devices
- Timeline charts
- Access and Learn Chemistry Learner's Book pg. 46
- Periodic table charts

- Oral questions - Group discussions - Written exercises

Inorganic Chemistry

Groups and periods I
Groups and periods II

By the end of the lesson, the learner should be able to:

- Define groups and periods in the periodic table
- Identify the number of groups and periods in the modern periodic table
- Relate groups to vertical columns and periods to horizontal rows

- Study the modern periodic table
- Discuss with peers the meaning of groups and periods
- Identify groups and periods in the periodic table

What are groups and periods in the periodic table?

- Access and Learn Chemistry Learner's Book pg. 49
- Periodic table
- Digital devices

- Oral questions - Written exercises - Observation

Inorganic Chemistry

Position of an element and electron arrangement
Chemical families - Alkali metals and Alkaline earth metals

By the end of the lesson, the learner should be able to:

- Relate the position of an element to its electron arrangement
- Determine group number from valence electrons
- Determine period number from number of energy levels

- Create element cards showing electron arrangements
- Place element cards in correct positions on a periodic table template
- Discuss how electron arrangement relates to group and period

How can you predict an element's position in the periodic table from its electron arrangement?

- Access and Learn Chemistry Learner's Book pg. 51
- Manila paper
- Graph paper
- Scissors
- Access and Learn Chemistry Learner's Book pg. 53
- Periodic table
- Digital devices

- Practical assessment - Oral questions - Observation

Inorganic Chemistry

Chemical families - Halogens and Noble gases
Transition elements

By the end of the lesson, the learner should be able to:

- Identify members of halogens and noble gases
- Describe common features of Group VII and Group VIII elements
- Connect halogens to uses like chlorine in water treatment and noble gases in lighting

- Identify elements in Group VII and Group VIII
- Discuss with peers common features of halogens
- Search for information on properties of noble gases

Why are noble gases called inert gases?

- Access and Learn Chemistry Learner's Book pg. 53
- Periodic table
- Digital devices
- Access and Learn Chemistry Learner's Book pg. 54
- Coloured pencils

- Oral questions - Written exercises - Group discussions

Inorganic Chemistry

Stability of atoms

By the end of the lesson, the learner should be able to:

- Explain the stability of noble gas atoms
- Describe how atoms gain stability through electron loss or gain
- Relate atomic stability to the octet rule and full outer shells

- Draw atomic structures of helium, neon and argon
- Discuss with peers the meaning of stability of an atom
- Identify what makes noble gases stable

Why are noble gases stable?

- Access and Learn Chemistry Learner's Book pg. 55
- Periodic table
- Digital devices

- Oral questions - Written exercises - Observation

Inorganic Chemistry

Cations and anions

By the end of the lesson, the learner should be able to:

- Define cations and anions
- Predict the type of ion formed from electron arrangement
- Draw ion formation using dot and cross diagrams

- Study diagrams showing ion formation
- Draw ion formation of metals and non-metals using dot and cross structures
- Discuss with peers the difference between cations and anions

How do atoms form ions?

- Access and Learn Chemistry Learner's Book pg. 56
- Digital devices
- Charts showing ion formation

- Oral questions - Written exercises - Practical drawings

Inorganic Chemistry

Valency and oxidation number I

By the end of the lesson, the learner should be able to:

- Define valency and oxidation number
- Determine valency from electron arrangement
- Differentiate between valency and oxidation number

- Discuss with peers the meaning of valency and oxidation number
- Determine valency of elements from their electron arrangements
- Compare valency and oxidation number of elements

What is the difference between valency and oxidation number?

- Access and Learn Chemistry Learner's Book pg. 58
- Periodic table
- Digital devices

- Oral questions - Written exercises - Observation

Inorganic Chemistry

Valency and oxidation number II

By the end of the lesson, the learner should be able to:

- Identify elements with variable oxidation numbers
- Write oxidation numbers of transition elements
- Apply Roman numerals to represent variable oxidation states

- Discuss with peers elements with variable oxidation numbers
- Complete the table of oxidation numbers for transition elements
- Practise writing oxidation numbers using Roman numerals

Why do some elements have more than one oxidation number?

- Access and Learn Chemistry Learner's Book pg. 59
- Periodic table
- Digital devices

- Oral questions - Written exercises - Observation

Inorganic Chemistry

Radicals

By the end of the lesson, the learner should be able to:

- Define radicals in chemistry
- Identify common radicals and their valencies
- Apply knowledge of radicals in writing chemical formulae

- Discuss with peers the meaning of radicals
- Complete the table of radicals and their valencies
- Identify radicals in common compounds

What are radicals and how are they used in Chemistry?

- Access and Learn Chemistry Learner's Book pg. 60
- Charts showing radicals
- Digital devices

- Oral questions - Written exercises - Observation

Inorganic Chemistry

Electron arrangement of ions using s and p notation

By the end of the lesson, the learner should be able to:

- Write electron arrangement of ions using s and p notation
- Distinguish between electron arrangements of atoms and ions
- Apply electron arrangement to explain ion formation

- Copy and complete the table showing electron arrangements of ions
- Compare electron arrangements of atoms and their ions
- List cations and anions from the table

How does the electron arrangement of an ion differ from that of its atom?

- Access and Learn Chemistry Learner's Book pg. 62
- Periodic table
- Digital devices

- Written exercises - Oral questions - Observation

Inorganic Chemistry

Deriving formulae of compounds I

By the end of the lesson, the learner should be able to:

- State the steps for writing formulae of compounds
- Derive formulae of simple ionic compounds
- Apply the cross-over method to write chemical formulae

- Discuss the steps for writing formulae of compounds
- Study worked examples on deriving formulae
- Practise writing formulae using the cross-over method

How do you write the formula of a compound?

- Access and Learn Chemistry Learner's Book pg. 63
- Valency tables
- Digital devices

- Written exercises - Oral questions - Observation

Inorganic Chemistry

Deriving formulae of compounds II

By the end of the lesson, the learner should be able to:

- Derive formulae of compounds containing radicals
- Write formulae of compounds with transition elements
- Apply formulae writing skills to complex compounds

- Write formulae of compounds containing radicals
- Practise writing formulae of compounds with variable oxidation numbers
- Compare formulae with classmates for peer learning

How do you write the formula of a compound containing a radical?

- Access and Learn Chemistry Learner's Book pg. 64
- Valency tables
- Digital devices

- Written exercises - Oral questions - Observation

Inorganic Chemistry

Writing balanced chemical equations I

By the end of the lesson, the learner should be able to:

- Identify reactants and products in a chemical reaction
- Write word equations for chemical reactions
- Convert word equations to chemical equations

- Read information on parts of a chemical equation
- Identify reactants and products in given reactions
- Write word equations for simple chemical reactions

What are the parts of a chemical equation?

- Access and Learn Chemistry Learner's Book pg. 64
- Digital devices
- Charts showing chemical equations

- Oral questions - Written exercises - Observation

Inorganic Chemistry

Writing balanced chemical equations II

By the end of the lesson, the learner should be able to:

- Write state symbols in chemical equations
- Balance chemical equations by adjusting coefficients
- Apply the law of conservation of mass to balance equations

- Study the steps for balancing chemical equations
- Study worked examples on balancing equations
- Practise balancing simple chemical equations

How do you balance a chemical equation?

- Access and Learn Chemistry Learner's Book pg. 65
- Digital devices
- Practice worksheets

- Written exercises - Oral questions - Observation

Inorganic Chemistry

Writing balanced chemical equations III

By the end of the lesson, the learner should be able to:

- Write balanced equations for reactions of acids with metals
- Write balanced equations for reactions of acids with carbonates
- Apply balancing skills to more complex reactions

- Write balanced equations for reactions involving acids
- Practise writing equations for reactions with carbonates
- Compare equations with classmates for peer learning

How do you write balanced equations for reactions involving acids?

- Access and Learn Chemistry Learner's Book pg. 66
- Digital devices
- Practice worksheets

- Written exercises - Oral questions - Observation

Inorganic Chemistry

Writing balanced chemical equations III

By the end of the lesson, the learner should be able to:

- Write balanced equations for reactions of acids with metals
- Write balanced equations for reactions of acids with carbonates
- Apply balancing skills to more complex reactions

- Write balanced equations for reactions involving acids
- Practise writing equations for reactions with carbonates
- Compare equations with classmates for peer learning

How do you write balanced equations for reactions involving acids?

- Access and Learn Chemistry Learner's Book pg. 66
- Digital devices
- Practice worksheets

- Written exercises - Oral questions - Observation

Inorganic Chemistry

Role of electron arrangement in the periodic table - Project
Chemical Bonding - Role of valence electrons in bonding

By the end of the lesson, the learner should be able to:

- Make a periodic table for the first 20 elements using locally available materials
- Explain the role of electron arrangement in the periodic table
- Apply creative skills to design and construct educational resources

- Use locally available materials to create a periodic table
- Include element names, symbols, atomic numbers and electron arrangements
- Display the periodic table for peer assessment

How does electron arrangement determine the organization of the periodic table?

- Access and Learn Chemistry Learner's Book pg. 67
- Manila paper or carton box
- Coloured pencils
- Flashcards
- Access & Learn Chemistry Learner's Book Grade 10 pg. 70
- Digital devices
- Modelling clay or plasticine
- Wooden splints

- Project assessment - Peer evaluation - Observation

Inorganic Chemistry

Chemical Bonding - Types of chemical bonds
Chemical Bonding - The ionic chemical bond

By the end of the lesson, the learner should be able to:

- Identify different types of chemical bonds
- Distinguish between ionic, covalent and metallic bonds
- Connect different bond types to substances used in daily life like salt and water

- Discuss with peers different types of chemical bonds (ionic, covalent, dative covalent, hydrogen bond, Van der Waals forces and metallic)
- Use models to represent different bond types
- Search for information using digital resources on bond types

What determines the type of bond formed between atoms?

- Access & Learn Chemistry Learner's Book Grade 10 pg. 71
- Digital devices
- Charts showing bond types
- Access & Learn Chemistry Learner's Book Grade 10 pg. 72
- Charts showing ionic bond formation
- Digital devices

- Oral questions - Group discussions - Written assignments

Inorganic Chemistry

Chemical Bonding - Ionic bonding in sodium chloride and magnesium oxide
Chemical Bonding - Giant ionic structures and lattice

By the end of the lesson, the learner should be able to:

- Illustrate ionic bonding in sodium chloride and magnesium oxide
- Draw Lewis structures for ionic compounds
- Connect ionic compounds to household items like cooking salt

- Use dot (.) and cross (x) diagrams to show electron donation and acceptance in NaCl and MgO
- Calculate net charges on ions formed
- Watch animations on ionic bond formation using digital devices

What holds sodium and chloride ions together in sodium chloride?

- Access & Learn Chemistry Learner's Book Grade 10 pg. 73
- Digital devices
- Periodic table
- Access & Learn Chemistry Learner's Book Grade 10 pg. 76
- Modelling materials (clay, toothpicks)
- Charts of ionic lattices

- Written assignments - Practical observation - Oral questions

Inorganic Chemistry

Chemical Bonding - Solubility of ionic compounds
Chemical Bonding - Thermal conductivity, melting and boiling points of ionic compounds

By the end of the lesson, the learner should be able to:

- Investigate the solubility of ionic compounds
- Explain why ionic compounds dissolve in water
- Apply knowledge of solubility to dissolving salt in cooking

- Carry out experiments to investigate solubility of sodium chloride and copper (II) chloride in water and ethanol
- Record and discuss observations
- Relate solubility to polarity of water molecules

Why do ionic compounds dissolve in water but not in organic solvents?

- Access & Learn Chemistry Learner's Book Grade 10 pg. 77
- Sodium chloride
- Copper (II) chloride
- Distilled water
- Ethanol
- Test tubes
- Access & Learn Chemistry Learner's Book Grade 10 pg. 78
- Bunsen burner
- Test tubes
- Copper (II) chloride

- Practical report - Observation - Written exercises

Inorganic Chemistry

Chemical Bonding - Electrical conductivity in molten and aqueous ionic compounds
Chemical Bonding - Uses of ionic compounds

By the end of the lesson, the learner should be able to:

- Investigate electrical conductivity in molten and aqueous ionic compounds
- Explain why ionic compounds conduct electricity when molten or dissolved
- Relate conductivity to battery technology and electrolysis

- Set up apparatus to investigate conductivity in molten lead (II) bromide
- Investigate conductivity in aqueous sodium chloride solution
- Compare conductivity in solid, molten and aqueous states

Why do ionic compounds conduct electricity only when molten or in solution?

- Access & Learn Chemistry Learner's Book Grade 10 pg. 79
- Dry cells
- Bulb/ammeter
- Connecting wires
- Carbon rods
- Lead (II) bromide
- Access & Learn Chemistry Learner's Book Grade 10 pg. 81
- Digital devices
- Samples of ionic compounds

- Practical report - Observation - Oral questions

Inorganic Chemistry

Chemical Bonding - The covalent chemical bond

By the end of the lesson, the learner should be able to:

- Describe the formation of covalent bonds
- Illustrate single covalent bonds using dot and cross diagrams
- Connect covalent bonding to common molecules like water and oxygen

- Discuss how atoms share electrons to form covalent bonds
- Draw dot (.) and cross (x) diagrams for hydrogen and chlorine molecules
- Use modelling clay to represent covalent bonding

How do non-metal atoms bond with each other?

- Access & Learn Chemistry Learner's Book Grade 10 pg. 82
- Modelling clay
- Wooden splints
- Charts showing covalent bonds

- Written exercises - Observation - Oral questions

Inorganic Chemistry

Chemical Bonding - Double and triple covalent bonds

By the end of the lesson, the learner should be able to:

- Illustrate double and triple covalent bonds
- Draw Lewis structures for oxygen and nitrogen molecules
- Relate multiple bonds to atmospheric gases we breathe

- Use dot (.) and cross (x) diagrams to show double bonds in oxygen molecules
- Illustrate triple covalent bonds in nitrogen molecules
- Model multiple covalent bonds using locally available materials

Why do some molecules have double or triple bonds?

- Access & Learn Chemistry Learner's Book Grade 10 pg. 83
- Modelling materials
- Charts of molecular structures

- Written exercises - Model assessment - Oral questions

Inorganic Chemistry

Chemical Bonding - Covalent bonding in ammonia and hydrogen chloride

By the end of the lesson, the learner should be able to:

- Illustrate covalent bonding in ammonia and hydrogen chloride molecules
- Identify lone pairs of electrons in molecules
- Connect molecular compounds to household chemicals like cleaning ammonia

- Draw dot (.) and cross (x) structures for ammonia and hydrogen chloride
- Identify shared pairs and lone pairs in molecules
- Discuss the shape of ammonia molecule

What is the role of lone pairs in covalent molecules?

- Access & Learn Chemistry Learner's Book Grade 10 pg. 84
- Charts showing molecular structures
- Digital devices

- Written exercises - Observation - Oral questions

Inorganic Chemistry

Chemical Bonding - Dative covalent (coordinate) bonding

By the end of the lesson, the learner should be able to:

- Describe the formation of dative covalent bonds
- Illustrate dative bonding in ammonium and hydroxonium ions
- Relate coordinate bonds to acid-base reactions in the stomach

- Discuss how both shared electrons come from one atom in dative bonding
- Draw structures showing dative bonds in ammonium ion (NH₄⁺)
- Illustrate dative bonding in hydroxonium ion (H₃O⁺)

How is a dative covalent bond different from an ordinary covalent bond?

- Access & Learn Chemistry Learner's Book Grade 10 pg. 85
- Charts showing dative bonds
- Digital devices

- Written exercises - Oral questions - Group discussions

Inorganic Chemistry

Chemical Bonding - Hydrogen bonding and Van der Waals forces

By the end of the lesson, the learner should be able to:

- Differentiate between intermolecular and intramolecular forces
- Illustrate hydrogen bonding and Van der Waals forces
- Connect intermolecular forces to properties of water like surface tension

- Discuss types of intermolecular forces using print or digital materials
- Illustrate hydrogen bonding in water molecules using models
- Draw diagrams showing Van der Waals forces

Why does water have a relatively high boiling point compared to other small molecules?

- Access & Learn Chemistry Learner's Book Grade 10 pg. 86
- Modelling materials
- Digital devices

- Written exercises - Model assessment - Oral questions

Inorganic Chemistry

Chemical Bonding - Hydrogen bonding and Van der Waals forces

By the end of the lesson, the learner should be able to:

- Differentiate between intermolecular and intramolecular forces
- Illustrate hydrogen bonding and Van der Waals forces
- Connect intermolecular forces to properties of water like surface tension

- Discuss types of intermolecular forces using print or digital materials
- Illustrate hydrogen bonding in water molecules using models
- Draw diagrams showing Van der Waals forces

Why does water have a relatively high boiling point compared to other small molecules?

- Access & Learn Chemistry Learner's Book Grade 10 pg. 86
- Modelling materials
- Digital devices

- Written exercises - Model assessment - Oral questions

Inorganic Chemistry

Chemical Bonding - Melting, boiling points and conductivity of molecular substances

By the end of the lesson, the learner should be able to:

- Investigate melting and boiling points of molecular substances
- Explain why molecular substances have low melting points
- Relate molecular properties to everyday substances like sugar and wax

- Carry out experiments to determine melting point of naphthalene
- Investigate thermal and electrical conductivity of molecular substances
- Compare properties with ionic compounds

Why do molecular substances have low melting and boiling points?

- Access & Learn Chemistry Learner's Book Grade 10 pg. 89
- Naphthalene
- Thermometer
- Bunsen burner
- Melting point tube

- Practical report - Written exercises - Observation

Inorganic Chemistry

Chemical Bonding - Solubility and uses of molecular substances

By the end of the lesson, the learner should be able to:

- Investigate solubility of molecular substances
- Relate uses of molecular substances to their properties
- Identify molecular substances in products like fuels and medicines

- Carry out experiments to investigate solubility of sulphur and sugar in water and ethanol
- Discuss uses of molecular substances related to their properties
- Search for information on applications of molecular compounds

Why do some molecular substances dissolve in organic solvents but not in water?

- Access & Learn Chemistry Learner's Book Grade 10 pg. 92
- Sulphur powder
- Sugar crystals
- Distilled water
- Ethanol

- Practical report - Written assignments - Oral questions

Inorganic Chemistry

Chemical Bonding - Giant atomic structure of diamond

By the end of the lesson, the learner should be able to:

- Describe the giant atomic structure of diamond
- Model the structure of diamond using locally available materials
- Connect diamond's structure to its use in cutting tools and jewelry

- Discuss the tetrahedral structure of diamond
- Model a diamond structure using modelling clay and toothpicks
- Relate structure to properties (hardness, non-conductivity)

Why is diamond the hardest natural substance?

- Access & Learn Chemistry Learner's Book Grade 10 pg. 93
- Modelling clay
- Toothpicks
- Charts of diamond structure

- Model assessment - Written exercises - Oral questions

Inorganic Chemistry

Chemical Bonding - Giant atomic structure of graphite

By the end of the lesson, the learner should be able to:

- Describe the layered structure of graphite
- Model the structure of graphite using locally available materials
- Relate graphite structure to its use in pencils and lubricants

- Discuss the hexagonal layered structure of graphite
- Model a graphite structure showing layers
- Explain why graphite conducts electricity while diamond does not

Why can graphite conduct electricity while diamond cannot?

- Access & Learn Chemistry Learner's Book Grade 10 pg. 94
- Modelling clay
- Toothpicks
- Charts of graphite structure

- Model assessment - Written exercises - Group discussions

Inorganic Chemistry

Chemical Bonding - Uses of diamond, graphite and silicon (IV) oxide

By the end of the lesson, the learner should be able to:

- Outline uses of diamond, graphite and silicon (IV) oxide
- Relate uses to their structural properties
- Identify applications in drilling, electronics and glass making

- Search for information on uses of giant atomic structures
- Discuss why diamond is used in drilling bits
- Explain the use of graphite as a lubricant and in electrodes

How do the structures of diamond and graphite determine their uses?

- Access & Learn Chemistry Learner's Book Grade 10 pg. 96
- Digital devices
- Charts showing applications

- Written assignments - Group presentations - Oral questions

Inorganic Chemistry

Chemical Bonding - Metallic bonding and delocalised electrons

By the end of the lesson, the learner should be able to:

- Describe the formation of metallic bonds
- Illustrate the sea of delocalised electrons model
- Relate metallic bonding to properties of metals used in wiring and construction

- Discuss how metallic bonds form through electron delocalisation
- Draw diagrams showing metallic bonding in sodium, magnesium and aluminium
- Explain the concept of positive ions in a sea of electrons

Why are metals good conductors of electricity and heat?

- Access & Learn Chemistry Learner's Book Grade 10 pg. 97
- Charts showing metallic bonding
- Digital devices

- Written exercises - Oral questions - Observation

Inorganic Chemistry

Chemical Bonding - Physical properties of giant metallic structures

By the end of the lesson, the learner should be able to:

- Describe physical properties of metallic structures
- Investigate thermal conductivity of metals
- Connect metallic properties to uses in cooking utensils and electrical wires

- Investigate thermal conductivity by comparing metal and wood pieces in sunlight
- Discuss high melting and boiling points, malleability, ductility and conductivity
- Analyse data on melting points of different metals

Why are metals malleable and ductile?

- Access & Learn Chemistry Learner's Book Grade 10 pg. 99
- Metal and wood pieces
- Digital devices

- Practical observation - Written exercises - Oral questions

Inorganic Chemistry

Chemical Bonding - Uses of metallic structures related to properties

By the end of the lesson, the learner should be able to:

- Outline uses of metallic structures
- Relate uses of metals to their bond type and properties
- Identify applications of metals in vehicles, buildings and electronics

- Search for information on uses of metallic structures
- Complete a table relating substances, bond types, properties and uses
- Discuss uses of copper, aluminium and iron in daily life

How does metallic bonding make metals suitable for electrical wiring?

- Access & Learn Chemistry Learner's Book Grade 10 pg. 101
- Digital devices
- Samples of metal products

- Written assignments - Group presentations - Oral questions