Chemistry: Paper 2
Unit 1: Macroscopic Properties
Properties of materials:
- Strength
- Thermal and electrical conductivity
- Brittle, malleable, and ductile
- Magnetic or non-magnetic
- Density
- Melting points and boiling points
Classification of substances:
- What products are made of: atoms or molecules
- Elements or compounds
- Pure substances (element or compound) vs mixtures
- Mixtures: homogeneous or heterogeneous
Names of formulae and substances:
- Learn cation and anion tables
- Includes polyatomic ions (e.g. sulfate SO₄²⁻, nitrite NO₂⁻, hydroxide OH⁻, phosphate PO₄³⁻)
- Common household/traditional names (e.g. H₂O: water, HCl: hydrochloric acid, NH₃: ammonia, CO₂: carbon dioxide, H₂SO₄: sulfuric acid)
- Understanding scientific language for naming compounds (e.g. oxide)
Classification of metals, metalloids, and non-metals:
- Learn the properties of each
- Metalloids (semi-metals): understand their applications
KZN November 2023
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