Across
- 2. Particle consisting of 2 or more atoms combined together
- 5. Process involves a gas changing into a liquid
- 7. Another name for melting
- 11. A change where matter changes from without becoming something new
- 13. Positively charged particles
- 17. Another name for Freezing
- 18. change that involves gain in heat
- 19. During the process of freezing, a liquid loses ____ energy
- 21. The phase change in which a solid turns into a liquid
- 22. A change where matter changes 1 thing into something completely new
- 24. The phase change in which a solid turns directly into a gas
- 26. Unit of length equal to one ten millionth of a millimeter
- 29. Used to view and scan the surface of very small particles.
- 30. All elements are composed of
Down
- 1. change that involves loss in heat
- 3. Closer together and lower in energy than those in a gas
- 4. The mass of a substance per unit volume
- 6. Differentiate one kind of matter from another
- 8. Anything that has a mass and takes up space
- 9. proposed the Atomic Theory
- 10. The amount of matter in a body
- 12. The resistance of a liquid to flowing
- 14. A liquid becoming a gas
- 15. Tightly packed together and stay in a fixed position
- 16. When a liquid freeze at low temperature and become solid
- 20. The amount of space that a gas takes up
- 23. Small negatively charged particles
- 25. Indivisible particle
- 27. A neutral particle that has no charge
- 28. State of matter that spread apart and fill all the space