Across
- 2. A state of matter where the molecules are moving the quickest
- 3. A process where heat is released into the surroundings. An example is freezing.
- 8. when matter changes from a gas to a liquid.
- 11. A process where heat is absorbed from the surroundings. An example is vaporization.
- 13. dependent on the speed of particles
- 16. (true or false) A substance will only start to evaporate when all of its matter reaches the boiling point.
- 21. the law that relates pressure and volume
- 22. Energy that represents how quickly an object is moving
- 24. This doesn’t change during a phase change even though heat may be added or taken away.
- 25. The heat of _______________ is the heat required to cause a set amount of solid to melt.
- 26. A state of matter that has a definite volume but not a definite shape.
Down
- 1. The heat of _______________ is the heat required to cause a set amount of liquid to vaporize
- 4. What state is mercury in at room temperature?
- 5. the law that relates volume and temperature
- 6. caused by collisions of particles
- 7. A state of matter that never breaks its intermolecular bonds.
- 9. if the number of particles increases then what happens to the pressure?
- 10. if the volume of a gas increases, what must happen to the temperature to maintain constant pressure?
- 12. (true or false) All matter contains particles that are moving
- 14. A __________ change is a reversible physical change happens when matter changes from one state to another.
- 15. The same force can provide more pressure if it is applied to a __________ area.
- 17. when matter changes directly from a solid to a gas
- 18. the law that relates temperature, pressure, and volume.
- 19. the space matter takes up.
- 20. What is a substance’s pressure if it started at a pressure of 2 atm and a volume of 2 L, and decreased its volume to 0.5 L?
- 23. when matter changes directly from a gas to a solid