Question

Which statement is true about most combustion reactions?

A. Heat and light are reactants.
B. Energy is absorbed.
C. Heat and light are products.
D. Oxygen is a product.

Answer 1

The true statement about most combustion reactions is that heat and light are products, which makes it an exothermic reaction.

Step-by-step explanation:

The statement that is true about most combustion reactions is that heat and light are products. In a combustion reaction, a substance reacts with oxygen gas and releases energy in the form of heat and light.

For example, the combustion of hydrogen gas (2H₂ + O₂ → 2H₂O) forms water vapor and releases heat and light. This type of reaction is known as an exothermic reaction because it releases energy to the surroundings.