Identify each change as a chemical or physical change. Use the data in the table to support your conclusions for each identification thoroughly based on your interpretation of classification of physical and chemical changes.

Reacting masses1 calcium carbonate breaks down on heating to produce calcium oxide and carbondioxide gas.caco3 + cao + co2a student heats 15 g of calcium carbonate strongly in a crucible.relative atomic masses (a): ca = 40, c = 12, o = 16.calculate the mass of calcium oxide produced by this reaction.(5 marks)