Unit 3 - Chemical Substances

Unit 3: Chemical Substances

In this third unit, you will learn about different types of chemical substances, how we recognise them and how they behave.

You will also be introduced to chemical reactions, and how these are different to the physical changes you have already learnt about in unit 2 (and in primary school).


Unit 3 Keyword Glossary.pdf

Core questions

Unit 3 Core Questions.pdf

Learning Journey

Unit 3 - Chemical Substances Learning Journey.pdf

Atoms and Elements

Elements, Compounds and Mixtures

Pure and Impure substances


Filtration, Evaporation and Crystallisation

Separating mixtures

Physical and chemical changes