Across
- 2. anything that takes up space
- 4. when something in science is physically mixed
- 6. number 26 on the periodic table
- 7. a group of two or more atoms that form a substance
- 9. a subatomic particle with no charge
- 10. when a molecule contains two or more atoms
Down
- 1. number 7 on the periodic table
- 3. the building blocks of science
- 5. subatomic particle with a charge of negative charge
- 8. the basic units of matter