Question

match the vocabulary word to its definition. smallest unit of a chemical element a. neutron b. nucleus a subatomic particle with a negative charge c. electron d. atom a subatomic particle with no charge e. proton center of an atom

Explanation:

1. The smallest unit of a chemical element is an atom.
2. A subatomic particle with a negative charge is an electron.
3. A subatomic particle with no charge is a neutron.
4. The center of an atom is the nucleus.

Answer:

1. d. atom
2. c. electron
3. a. neutron
4. b. nucleus