AQA GCSE Combined Science Trilogy · 8464
Specification 4.4.1.1, 5.1.1.1, 5.3.1.1, 5.5.1.1 · Paper 1, Paper 3
A substance used up in a chemical reaction.
Revise: Photosynthetic ReactionThe arrow means that the reactants react to form the products.
- Revise: Representing Chemical Reactions and Balancing Equations
A starting substance that undergoes change in a chemical reaction.
- Revise: Conservation of Mass and Balanced Equations
1 more note
- Revise: Exothermic and Endothermic Reactions: Energy Transfers and Uses
A substance present at the start of a chemical reaction that is changed during the reaction.