Chemistry — Changes to Materials

Chemical reactions and precipitatesSign up

Identify whether a chemical reaction has taken place through observations of the loss of reactants and/or the formation of products which have different properties to the reactants (including evolving a gas, formation of a precipitate or change of colour). · Explain why a precipitate forms, in terms of a chemical reaction between soluble reactants forming at least one insoluble product. · Use the particle model to describe chemical reactions.

NeutralisationSign up

Describe neutralisation reactions in terms of change of pH.