8 How many atoms of oxygen are there in this compound?

To determine the number of oxygen atoms in a compound, you need to look at its chemical formula. For example, in water (H₂O), there are two hydrogen atoms and one oxygen atom. If you encounter a compound like calcium carbonate (CaCO₃), there’s one carbon, one calcium, and three oxygen atoms! Each element's subscript tells you how many atoms are present, so just count those oxygen subscripts for the answer! Knowing how to interpret chemical formulas is not just for chemists! It’s essential in various fields, from environmental science to pharmacology. For example, understanding the composition of compounds helps scientists analyze pollutants in the air or create new medications that effectively target specific health issues. Engaging with chemistry can help you connect the dots between everyday substances and larger environmental systems!