what is matter?

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Across
  1. 3. we use this to cook, run,drive and its all around us.
  2. 6. what are the building blocks of matter?
  3. 8. describes any traits that can be measured in matter.
  4. 9. what is a state of matter with no fixed shape or volume?
  5. 10. what type of matter has volume and flows freely?
  6. 12. we calculate this by length x width x height.
Down
  1. 1. fluid fluid that changes its viscosity when under strain?
  2. 2. anything that takes up space and has mass is?
  3. 4. we measure this in Celsius or Fahrenheit.
  4. 5. describes the amount of matter that makes up an object.
  5. 7. the transfer of energy and makes things warm is?
  6. 11. examples of matter like rock, glass, ice are all?