Question

When a candle burns, it undergoes a chemical change. Which of the following best describes the products formed during this process?
1 point
Soot and unburned wax
Carbon dioxide and water vapor
Hydrogen and carbon monoxide
Oxygen and wax

Answer 1

The best description of the products formed when a candle burns is **carbon dioxide and water vapor**. During the combustion of a candle, the wax (which is primarily made up of hydrocarbons) reacts with oxygen in the air, producing carbon dioxide and water as the main products, along with some heat and light. While some incomplete combustion may produce soot or carbon monoxide, the complete combustion primarily yields carbon dioxide and water vapor.