Question

1. in the chemical reaction in which sucrose is heated and decomposes to form carbon dioxide and water, which of the following is a reactant?

o sucrose
o water
o carbon dioxide
o heat

Explanation:

In a chemical reaction, reactants are the substances that undergo a change. Here, sucrose is the starting material that decomposes. Water and carbon dioxide are products formed from the decomposition of sucrose. Heat is a condition (energy input) for the reaction, not a reactant.

Answer:

sucrose