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

  • Key concept 1
    Exothermic and endothermic reactions

    Resources for this key concept are being developed from research evidence and will be uploaded in April 2019.

Topic 4: Acids and alkalis

  • Key concept 1
    Neutralisation

    Resources for this key concept are being developed from research evidence and will be uploaded in June 2019.
  • Key concept 2
    Making salts

    Resources for this key concept are being developed from research evidence and will be uploaded in June 2019.

Topic 5: Periodic table

  • Key concept 1
    Reactivity


    Resources for this key concept are being developed from research evidence and will be uploaded in November 2019.
  • Key concept 2
    Patterns in chemical properties of the elements

    Resources for this key concept are being developed from research evidence and will be uploaded in November 2019.

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