The best reaction for use in our hand warmers was the 'slaking' of lime. It generated enough heat for our purposes, and involved chemicals (water, calcium oxide and calcium hydroxide) that are ...

In a thermal decomposition reaction, there is only one reactant, but two or more products. For example, when copper carbonate is heated, it breaks down to produce copper oxide and carbon dioxide ...

The mass of one substance in a reaction can be calculated if the masses of the other substances are known. For example: copper carbonate decomposes on heating to make solid copper oxide, which ...