I know that burning (combustion) is a chemical reaction and that it releases energy.

I know that some chemical changes can be changed back and others cannot e.g. melting chocolate, frying an egg.

I can name some substances made by chemical reactions.

I know that burning a fuel makes a change that cannot be changed back.

I can predict whether other changes are reversible.

Given the starting materials

I can list the substances made by burning.

I can recognise when a chemical change occurs and know what to look for e.g. bubbles, heat, colour change. 

I know that new substances are made in chemical reactions. 

I can explain that burning as a reaction with oxygen which produces oxides and releases energy.

I can describe how chemical reactions are used to make new substances and as a source of energy; use the particle model to explain how mass is conserved during chemical reactions and other changes.

I can represent chemical reactions by word equations and describe them.

I know that some things react in similar ways e.g. metals heated in oxygen to form oxides. 

I know that all fuels are substances that release energy on burning.

I can compare the energy released when different fuels burn. 

I can relate chemical changes of state using the particle model.

I can explain observations in which mass appears to be lost using the principle of conservation of mass, and represent some reactions by symbol equations e.g. burning carbon to give CO2.

I can represent change using chemical symbols and equations and represent the particle model of chemical reactions using equations.