Big idea: chemical reactions

A big idea in chemistry is that during a chemical reaction, atoms are rearranged resulting in the formation of a new substance or substances.


Download teacher notes for this big idea

Resources for age 11-14

Research informed progression toolkits to help you develop the big ideas of science

The big idea is developed through a series of key concepts at age 11-14, which have been organised into teaching topics.

Topic 1: Chemical change

Topic 2: Understanding chemical reactions

Topic 3: Energy and reactions

Topic 4: Acids and alkalis

Topic 5: Periodic table

Is there a recommended teaching order?

The Best Evidence Science Teaching resources can be used with your existing scheme of work, if desired. 

However, we have used research evidence on learning pathways and effective sequencing of ideas to develop subject maps for biology, chemistry, earth science and physics. 

View the chemistry subject map