Across
- 2. the study of matter and changes in matter
- 3. a mixture that uniform throughout
- 5. the amount of space something occupies
- 8. the building block of matter
- 9. oxygen and hydrogen are examples
- 13. when a gas becomes a liquid
- 14. matter in which particles are packed very tightly
Down
- 1. a mixture that is not uniform throughout
- 4. substances that are physically combined
- 6. negatively charged particle in an atom
- 7. anything that has mass and takes up space
- 9. when a liquid becomes a gas
- 10. positively charged particle in an atom
- 11. matter that has particles that move freely
- 12. anything that has mass and takes up space