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KS3 Chemistry

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1: The Building Blocks of Matter

1: The Particulate Nature of Matter

States of Matter

Particle Theory to Explain Changes of State

Diffusion and Gas Pressure

2: Atoms Elements and Compounds

Dalton's Atomic Model

Chemical Symbols and Formulae

Comparing Atoms, Elements and Compounds

Chemical Reactions and Conservation of Mass

3: Pure and Impure Substances

Pure Substances

Mixtures

Diffusion

Separating Mixtures

Identifying Pure Substances

2: Reactions and Energy

1: Chemical Reactions

Chemical Reactions

Chemical Formulae and Using Equations

Types of Chemical Reactions

Acids and Alkalis

The pH scale and Indicators

Reactions of Acids

Catalysts

2: Energetics

Energy Changes in Chemical Reactions

Exothermic and Endothermic Chemical Reactions

3: The Periodic Table

Physical and Chemical Properties of Elements

Mendeleev's Periodic Table

The Periodic Table: Periods and Groups

The Periodic Table: Metals

The Periodic Table: Non-metals

3: Materials and the Earth

1: Materials

The Reactivity Series

The Extraction of Metals and Displacement Reactions

Properties of Ceramics, Polymers and Composites

2: The Earth and Atmosphere

Composition and Structure of the Earth

The Rock Cycle

The Use of Earth's Limited Resources

The Composition of the Atmosphere

The Impact of Human Activity on Earth's Systems

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Topic: 3: Pure and Impure Substances

What word is used to describe a substance found in a material in very small amounts, but affects the material's properties?

(Marks: 1)

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