What is Matter?

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Across
  1. 2. an example of matter in all 3 states
  2. 3. how many states of matter most things are
  3. 4. solid mixtures of minerals that have been pressed or heated together
  4. 9. liquids that contain particles that do not dissolve
  5. 11. a group of atoms
  6. 12. the table of sorted elements
  7. 13. the tiny particles that make up matter
Down
  1. 1. two-thirds of the earth's surface
  2. 5. a colloid of tiny water droplets mixed in air
  3. 6. a mixture of sand, cement, and stone
  4. 7. eroded rock, sea shells, and glass fragments
  5. 8. an example of plasma
  6. 10. the 4th state of matter