GCSE Chemistry

label the diagram

limestone is made up of a compound called ..... ....... which has the chemical formula ....... . Chalk and marble are other forms of calcium carbonate . All these forms of calcium carbonate were made from the shells of sea creatures that died millions of years ago . the shells were ..... and heated underground to form rock . The different forms have been squashed and heated gto different amounts , which makes thier physical properties slightly different , but chemically they still ....... the same

calcium carbonate decomposes when ....... to form calcium oxide and carbon dioxide . This type of chemical reaction is called ...... decomposition . The word equation for the thermal decomposition of calcium carbonate is --------------------------------------------------------
the balanced symbol equation is ----------------------------------------------
many other metal carbonates thermall decompose

Calcium oxide reacts vigorously with .... to form calcium hydroxide . This reaction gives out a lot of heat energy , so it is an ...... reaction . the word equation is ----------------------------------------------- the balanced symbol equation is ------------------------------------------------

If more water is added to calcium hydroxide a solution of calcium hydroxide is made . the solution is commonly known as ....... . Limewater is used a a test for carbon dioxide as it goes cloudy when carbon dioxide gas is bubbled through it . The limewater goes cloudy because carbon dioxide reacts calcium hydroxide to make calcium carbonate ( which is ..... in water and it is this that makes the water .....) . water is also made in th reaction . The word equation for the reaction is .............................................................
the balanced symbol equation is ...................................................................................