Carbon dioxide

Carbon dioxide is a colorless, odorless gas produced by burning carbon, organic compounds, and from respiration. Pictured is carbon dioxide filling a balloon after vinegar and sodium bicarbonate are mixed.

Carbon dioxide (CO₂) is a colorless, odorless gas produced by burning carbon, organic compounds, and from respiration. It is naturally present in air and is absorbed by plants in photosynthesis.

Leavening agents use carbon dioxide to expand dough for baking.

Mosquitoes detect carbon dioxide to identify prey.