CO₂, carbon dioxide. The formula of a compound shows how many atoms of each element are bonded together. The formula is made up of symbols and numbers. The numbers are written as subscript ...

What is carbon dioxide and how is it connected to climate change? Carbon dioxide (CO 2) is a colorless, odorless greenhouse gas produced by numerous natural processes and by human activities such as ...

Carbon dioxide is present in the atmosphere and contributes to global warming. We write this reaction as a word equation and as the chemical formula, CO₂. This tells us there are two oxygen ...