Across
- 3. – a homogeneous mixture
- 5. – The center of an atom
- 7. – The process where a solid changes directly to a gas
- 8. – Positively charged particles in an atom
Down
- 1. – Anything that has mass and takes up space
- 2. – Process where a gas turns into a liquid
- 4. – Negatively charged particles in an atom
- 6. – A pure substance made of only one type of atom
- 9. – The form of matter that has a definite shape and volume