NST1501
Natural science for the classroom 1
Assignment 03
2024
Questions covered
1.1 Define the following terms:
1.1.1 Solvent: A solvent is a substance capable of dissolving other substances to form a homogeneous
mixture, known as a solution.
1.1.2 Matter: Matter is anything that occupies space and has mass, existing in various forms such as solids,
liquids, and gases.
1.2 Example of a heterogeneous mixture: A salad comprising lettuce, tomatoes, and croutons.
1.3 Ways of separating homogenous mixtures: Distillation and chromatography.
1.4 Three different states of matter: Solid, liquid, gas.
1.5 Identify the process:
1.5.1 Change of state from liquid to solid: Freezing
1.5.2 Change of state from gas to liquid: Condensation
1.5.3 Change of state from solid to gas: Sublimation
1.5.4 Change of state from liquid to gas: Evaporation
1.5.5 Change of state from gas to solid: Deposition
1.5.6 Change of state from solid to liquid: Melting
1.6 Characteristics of a good lesson plan: Clear objectives, appropriate content, engaging activities,
assessment methods, and flexibility.
1.7 Difficulty teaching sublimation: Sublimation involves the direct transition of a substance from a solid to a
gas without passing through the liquid phase, which may challenge learners' understanding of
conventional state changes.
1.8 Term in intermediate phase for matter and materials: This strand is typically taught in the Natural
Sciences curriculum.
Natural science for the classroom 1
Assignment 03
2024
Questions covered
1.1 Define the following terms:
1.1.1 Solvent: A solvent is a substance capable of dissolving other substances to form a homogeneous
mixture, known as a solution.
1.1.2 Matter: Matter is anything that occupies space and has mass, existing in various forms such as solids,
liquids, and gases.
1.2 Example of a heterogeneous mixture: A salad comprising lettuce, tomatoes, and croutons.
1.3 Ways of separating homogenous mixtures: Distillation and chromatography.
1.4 Three different states of matter: Solid, liquid, gas.
1.5 Identify the process:
1.5.1 Change of state from liquid to solid: Freezing
1.5.2 Change of state from gas to liquid: Condensation
1.5.3 Change of state from solid to gas: Sublimation
1.5.4 Change of state from liquid to gas: Evaporation
1.5.5 Change of state from gas to solid: Deposition
1.5.6 Change of state from solid to liquid: Melting
1.6 Characteristics of a good lesson plan: Clear objectives, appropriate content, engaging activities,
assessment methods, and flexibility.
1.7 Difficulty teaching sublimation: Sublimation involves the direct transition of a substance from a solid to a
gas without passing through the liquid phase, which may challenge learners' understanding of
conventional state changes.
1.8 Term in intermediate phase for matter and materials: This strand is typically taught in the Natural
Sciences curriculum.
