Consider the following list of substances: carbon dioxide, CO2 hydrogen gas, H2 magnesium, Mg sodium chloride, NaCl methane, CH4 potassium, K Which of the substances are compounds? (1 point)

Answer 1

In the list provided, the substances that are compounds are:

1. Carbon dioxide, CO₂
2. Sodium chloride, NaCl
3. Methane, CH₄

The other substances, hydrogen gas (H₂) and magnesium (Mg), are elemental forms and are not compounds.