Question

what happens when a molecule combusts? a. it combines with oxygen. b. it breaks up into elements. c. it dissolves in water. d. it forms a solid.

Explanation:

Combustion is a chemical - reaction with oxygen. When a molecule combusts, it reacts with oxygen in the air, usually producing heat and light. Options B, C, and D are not typical results of combustion.

Answer:

A. It combines with oxygen.