The products of a decomposition reaction are two or more simpler substances formed from the breakdown of a single compound. Decomposition reactions typically occur when a compound is heated, exposed to light, or comes into contact with a catalyst. The products of a decomposition reaction depend on the specific compound undergoing the reaction. Some common decomposition products include:

1. Gases: Many decomposition reactions produce gases as products. For example, when baking soda (sodium bicarbonate) is heated, it decomposes into carbon dioxide gas, water vapor, and sodium carbonate.

2. Metals: Decomposition reactions can also produce metals as products. For example, when copper sulfate is heated, it decomposes into copper metal and sulfur dioxide gas.

3. Non-metals: Non-metals can also be produced as products of decomposition reactions. For example, when hydrogen sulfide gas is heated, it decomposes into hydrogen gas and sulfur.

Decomposition reactions play a vital role in various industrial processes and everyday life. For instance, the production of metals from their ores, the refining of petroleum, and the digestion of food in our bodies all involve decomposition reactions.