Edexcel GCSE Chemistry key terms

The distance between corresponding points on successive waves, commonly shown in nanometres for visible light.

An acid that only partially dissociates into ions in aqueous solution.

An average in which values present in larger proportions contribute more strongly to the result.

A representation of a chemical reaction that gives the full names of the substances involved rather than their chemical formulae.

A single-celled fungus that supplies the enzymes needed to ferment sugars.

The amount of useful product obtained from a reaction.