Across
- 4. Oil will ______ on water because it is less dense than water.
- 8. At the ______ point, solid turns to liquid.
- 12. A liquid can become gas through a process call ______.
- 13. Water vapour in the air can ______ into liquid when it is cold.
- 15. To change from liquid to gas, the substance will ______ heat.
Down
- 1. There are ______ states of matter - solid, liquid and gas.
- 2. At the ______ point, liquid turns to gas.
- 3. To change from solid to liquid, the substance must ______ heat.
- 4. The process where liquids turn to solids is called ______.
- 5. A piece of plasticine will sink in water because it has a ______ than water.
- 6. Evaporation only occurs at the ______ of a liquid.
- 7. A piece of cork will float in water because it has a ______ density than water.
- 9. To change from liquid to solid, the substance will heat.
- 10. ______ is the mass of matter in a unit volume of substance.
- 11. To change from gas to liquid, the substance will ______ heat.
- 14. Mercury is denser than water, so it will ______ in water.