States of Matter

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Across
  1. 2. A solid retains a fixed _______ and rigid shape.
  2. 3. Water is a...
  3. 4. ___ is matter that has no shape, size or colour of its own.
  4. 10. Liquids are formed when temperature is ________ and atoms gain energy.
  5. 13. The phase transition when solid is changed to liquid.
  6. 15. The phase transition when liquid is changed to solid.
  7. 18. The state that matter is in depends on how much _______ is within the system.
  8. 20. Each state has different__________.
  9. 21. The solid (state of matter) of lava or magma.
Down
  1. 1. It is (possible/impossible) for water (liquid) to be at 0°c.
  2. 5. The phase transition when solid is changed to gas.
  3. 6. Solid, liquid and gas are the tree main types of ______.
  4. 7. When heating up a solid, the heat used to convert it into a liquid is turned into _________ energy.
  5. 8. The phase transition from gas to solid is called...
  6. 9. The phase transition when gas is changed to liquid.
  7. 11. The phase transition when liquid is changed to gas.
  8. 12. A liquid has ________ which can move and slide past one another.
  9. 14. Which state has a shape of its own?
  10. 16. Particles in a gas vibrate and move freely at ____ speeds.
  11. 17. Liquid form is more ______then gas form.
  12. 19. Atoms in a solid _______ but do not move from place to place.