Question

A decomposition reaction always breaks a compound down into two pure elements. True or False.

Answer 1

False-- most of the time not enough energy is put into the system, so the compounds or whatever cant break down fully into their elements

Answer 2

Answer: The correct answer is False.

Explanation:

Decomposition reaction is defined as the chemical reaction in which a substance break down into two or more substances. The general chemical equation for the decomposition reaction follows:

$AB\rightarrow A+B$

The products of decomposition reaction can be pure elements and compounds.

For Example:

• Decomposition of calcium carbonate to calcium oxide and carbon dioxide.

$CaCO_3(s)\rightarrow CaO(s)+CO_2(g)$

• Decomposition of water into elemental hydrogen and oxygen gases.

$2H_2O(l)\rightarrow 2H_2(g)+O_2(g)$

Thus, the correct answer is False.