Across
- 5. Changing states of matter
- 6. Change in position
- 8. Solid, liquid, gas, and plasma
- 11. A liquid turns to gas throughout, and energy is added
- 12. The total amount of kinetic energy in a substance
- 18. A change in a substance that does not change its molecular structure
- 19. The movement of heat, mostly in a liquid or gas
- 20. A liquid turns to a gas on the surface, and energy is added
- 21. The molecules are close together, vibrate, fixed shape and volume
- 22. A liquid turns to a solid, energy is removed
- 24. A liquid turns to a gas fast, energy is added
Down
- 1. Average kinetic energy of molecules in a substance
- 2. A group of atoms bonded together
- 3. The energy of motion
- 4. A change in molecular composition and/or structure
- 7. When energy is removed, a gas turns to a solid, skipping the liquid phase
- 9. When energy is added, a solid turns to a gas, skipping the liquid phase
- 10. When a solid turns to a liquid and energy is added
- 13. A phase change from gas to a liquid where energy is removed
- 14. Anything that has mass and takes up space
- 15. The transfer of energy by direct contact from one molecule to another
- 16. The transfer of thermal energy
- 17. Molecules move freely, close together
- 23. Molecules are far apart, have a lot of energy