How did the development of the earliest idea about atoms differ from the later work of scientists? A. It was based on sound evidence.
B. There were explanations for the idea.
C. It was based on the thoughts of an early philosopher.
D. There were experiments conducted to support the idea.

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)