Chemistry — Changes to Materials

Word equations and energy changesSign up

Use word equations to describe reactions. · Know that some processes and reactions are endothermic or exothermic, and this can be identified by temperature change.

Reactivity, solubility and inert substancesSign up

Describe the reactivity of metals (limited to sodium, potassium, calcium, magnesium, zinc, iron, copper, gold and silver) with oxygen, water and dilute acids. · Know that reactions do not always lead to a single pure product and that sometimes a reaction will produce an impure mixture of products. · Describe how the solubility of different salts varies with temperature. · Understand that some substances are generally unreactive and can be described as inert.