Bauxite - the ore of aluminium
Calcite - the mineral of limestone
Carbonic acid - when rain falls, it reacts with carbon dioxide in the air to form carbonic acid
Chalk - rock that is composed largely of the mineral calcite; it is softer than limestone and marble
Cinnabar - the ore of mercury and being a mixture of mercury(II) sulphide and impurities
Effervescence - the process of bubbling as gas escapes from a solution
Erosion - the wearing away of surface materials and the movement of products of weathering from where they formed to a different location
Haematite - the ore of iron
Limestone - rock that is composed largely of the mineral calcite; it is softer than marble but harder than chalk
Limewater - the common name for saturated calcium hydroxide solution
Marble - rock that is composed largely of the mineral calcite; it is harder than chalk and limestone
Mineral - the individual chemical compounds that make up rocks
Molten - describes metals or rocks that are in a liquid state because of great heat
Ore - rocks from which metals are obtained
Quicklime - the common name for calcium oxide
Slaked lime - the common name for calcium hydroxide
Weathering - the process for which solid rock is broken down into smaller pieces and changed into other materials