Carbon dioxide is a chemical compound with the chemical formula CO2. It is made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in a gas state …

Feb 25, 2025 · What is Carbon dioxide (CO₂)? Carbon dioxide (CO₂) is a colourless and odourless gas that is a natural component of the air and part of the global carbon cycle. It plays an important role in …

Nov 27, 2025 · carbon dioxide, (CO 2), a colourless gas having a faint sharp odour and a sour taste.

Carbon dioxide is a natural greenhouse gas, commonly produced by the air we exhale. At higher levels, CO2 affects productivity, sleep and infectious disease transmission. Learn more on CO2 health …

Carbon dioxide, CO2, is a colourless and odorless gas. It is relatively nontoxic and noncombustible, but it is heavier than air and may asphyxiate by the displacement of air.

Carbon dioxide is an important greenhouse gas that helps to trap heat in our atmosphere. Without it, our planet would be inhospitably cold. However, an increase in CO 2 concentrations in our atmosphere is …

Sep 25, 2025 · Carbon dioxide (CO2) is an important greenhouse gas. Greenhouse gases trap the heat from sunlight, warming the planet. Without any greenhouse gases, Earth would be too cold to …