For example, copper and gold are elements ... chemically joined together. Compounds form in chemical reactions, and you need other chemical reactions to separate a compound into its elements.

Examples of where you can find organic compounds include agrichemicals ... Petroleum is also the raw material for many chemical products (e.g., pharmaceuticals, solvents, fertilizers, pesticides, and ...

However, we now know that there are actually 118 chemical elements ... very difficult to separate them. Compounds are not found on the periodic table. For example, water isn’t on the periodic ...