Across
- 1. A substance made of two or more elements
- 5. Particles that can separate and move freely throughout a container
- 7. Mostly gases and are poor conductors of heat and electricity
- 11. The smallest building blocks of matter
- 12. Particles that can move around but are still close to each other
- 13. Have properties of both metals and nonmetals
- 14. Stored energy
- 15. Properties that can be observed without changing the material's composition
Down
- 2. Solids at room temperature and are malleable
- 3. A process that absorbs energy from surroundings
- 4. Particles that collide with enough energy to break into charged particles
- 6. A pure substance made of only one type of atom
- 8. Particles that vibrate but can't move around
- 9. Anything with mass that takes up space
- 10. Energy of motion