changing state crossword

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Across
  1. 1. / The word often used to describe the fourth state of matter after solid.
  2. 5. / When a liquid turns into a gas.
  3. 6. / The model off matter with the closely packed bonds.
  4. 7. / When a solid turns into a liquid.
  5. 9. / The removal of particles in a landscape (e.g rocks)
Down
  1. 2. / To turn a solid straight to a gas.
  2. 3. / Its molecules are able to flow past each other.
  3. 4. / To change a gas into a liquid.
  4. 8. / The molecules move freely and randomly.