Across
- 2. A chemical combination of two or more atoms in definite proportions
- 4. Also known as bases
- 5. A stable physical mixture of two or more substances
- 6. an atom of molecule that carries an electrical charge
- 7. of matter The three different physical forms of matter
Down
- 1. Science that deals with the properties of matter
- 3. Subatomic particles with a positive charge
- 4. A Pungent colorless gas that is composed of hydrogen and nitrogen