1.1 heating it produces calcium oxide
and carbon dioxide.
1.1.1 bubbling carbon dioxide
through water makes it
2 some carbonates undergo thermal
decomposition more easily than others
depending on stability.
3 sometimes there's a colour change in the substance
3.1.1 copper oxide is black
4 add water to calcium oxide to get calcium
4.1 calcium hydroxide is used to neutralise acidic soil.
4.2 dissolves in water to create limewater.
5 this image shows 1) calcium carbonate thermally decomposing into
carbon dioxide and calcium oxide . 2) calcium oxide being added to
water to produce calcium hydroxide (limewater). 3) Calcium hydroxide reacts with
carbon dioxide to form calcium oxide and water.