States of matter

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Across
  1. 3. the particles of matter are very _____
  2. 5. anything that occupies space and has mass
  3. 7. the process through which solids change directly into gases
  4. 8. the intermixing of particles on their own
Down
  1. 1. matter is made up of this
  2. 2. the mass per unit volume of a substance
  3. 4. state of matter that has more interparticle space than solids but less than gases
  4. 6. state of matter that experiences highest rate of diffusion
  5. 7. State of matter that has definite shape and volume