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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

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Mixtures

Diffusion

Separating Mixtures

Identifying Pure Substances

2: Reactions and Energy

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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

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The Impact of Human Activity on Earth's Systems

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Topic: 3: Pure and Impure Substances

At 20°C, 10 g of a salt dissolves in 50 cm³ of water before it becomes saturated. Calculate the solubility in g per 100 cm at 20°C. Include units in your answer.

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