Question

what is the difference between an atom and a molecule? a) an atom is made of multiple molecules. b) a molecule is a single unit of an element. c) a molecule is formed when two or more atoms bond together. d) atoms and molecules are the same thing. which of the following statements about molecules is true? a) molecules always contain only one type of atom. b) all molecules are too small to see without a microscope. c) molecules do not have mass or volume. d) a molecule is made up of atoms that are chemically bonded. which of the following substances is made up of only one type of atom? a) water (h2o) b) oxygen (o2) c) table salt (nacl) d) carbon dioxide (co2)

Explanation:

1. An atom is the smallest unit of an element, and a molecule is formed when two or more atoms bond together. So for the first question, option c is correct as it correctly describes the formation of a molecule.
2. A molecule is made up of atoms that are chemically bonded, which is the correct statement among the options for the second - question.
3. Silver (Ag) is an element and is made up of only one type of atom. Water (H₂O) has hydrogen and oxygen atoms, sugar (C₆H₁₂O₆) has carbon, hydrogen and oxygen atoms, and carbon dioxide (CO₂) has carbon and oxygen atoms.

Answer:

1. c. A molecule is formed when two or more atoms bond together.
2. d. A molecule is made up of atoms that are chemically bonded.
3. b. Silver (Ag)