Question

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) Responses only CO2 , H2 , NaCl , and CH4 only cap c cap o sub 2 , cap h sub 2 , cap n A cap c l , and cap c cap h sub 4 only CO2 and CH4 only cap c cap o sub 2 and cap c cap h sub 4 only CO2 , NaCl , and CH4 only cap c cap o sub 2 , cap n A cap c l , and cap c cap h sub 4 only CO2 , Mg , NaCl , CH4 , and K

Answer 1

Compounds are substances that consist of two or more different elements chemically bonded together. In the list provided, the compounds are:

1. Carbon dioxide (CO2) - consists of carbon and oxygen.
2. Sodium chloride (NaCl) - consists of sodium and chlorine.
3. Methane (CH4) - consists of carbon and hydrogen.

The following substances are not compounds:

• Hydrogen gas (H2) - consists of only hydrogen atoms.
• Magnesium (Mg) - consists of only magnesium atoms.
• Potassium (K) - consists of only potassium atoms.

Therefore, the correct response is: CO2 , NaCl , and CH4 only (C O2 , N aCl , and C H4 only).