States of Matter

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Across
  1. 4. A very hot state of matter made of charged particles.
  2. 6. A state of matter that flows and takes the shape of its container.
  3. 8. A measure of how tightly packed the matter in an object is.
  4. 9. The process of a liquid turning into a solid when cooled.
  5. 11. The process of a gas cooling down and turning into a liquid.
  6. 12. The process of a liquid heating up and turning into a gas.
Down
  1. 1. State of matter where particles are packed tightly together in a fixed shape..
  2. 2. State of matter where particles spread out to completely fill the space they are in.
  3. 3. The process of a solid turning into a liquid when heated.
  4. 5. Two or more atoms joined together.
  5. 7. A general word for a tiny piece of matter (like an atom or a molecule).
  6. 10. The energy of moving particles that increases when matter is heated and can cause changes of state.