Across
- 2. Energy particles are vibrating but not moving around one another
- 3. You saw a puddle on your way to school that was gone on your way home. What happened to it?
- 5. Phase change that occurs when energy is removed from a liquid
- 9. Particles of a solid beak away from each other and spread out evenly in the liquid
- 13. The temperature at which particles would be completely still although this has never been achieved
- 14. The transfer of energy from one particle to another when they come into contact
- 15. Gas to liquid
- 17. The ability to do work
- 19. This substance from our lab has a melting point of less than 55 degrees C.
Down
- 1. Removing energy from a substance causes particles to move closer together or ________.
- 4. The temperature at which liquid turns to a gas
- 6. A phase of matter that has no definite shape or volume
- 7. A mixture that forms when one substance dissolves into another
- 8. Iodine gas formed crystals on the cold surface do to which phase change?
- 10. Phase change that turns a solid directly into a gas
- 11. The type of energy that particles have when they are moving
- 12. This substance is unique because of the shape its polar molecules form in a solid causes it to be less dense as a solid than as a liquid.
- 16. The majority of Earth's energy comes from the _______.
- 17. When particles of a substance move further apart
- 18. Any situation in which no energy transfer is happening between particles in a system