Vocabulary Review - Properties of Matter

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Across
  1. 2. the amount of matter in an object
  2. 3. The smallest physical unit of an element or compound that consists of two or more atoms.
  3. 8. The temperature at which a substance changes from a solid to a liquid.
  4. 10. The amount of space a substance or object occupies.
  5. 13. The process of changing a gas to a liquid.
  6. 14. A state of matter where the molecules in a substance are packed tight together and slow moving; has a definite shape and definite volume.
  7. 15. A measurement that compares the amount of matter an object has to its volume.
Down
  1. 1. The process of changing a liquid to a gas.
  2. 4. A state of matter where the molecules in a substance are flowing free with a constant volume but no definite shape.
  3. 5. the simplest substances found naturally on Earth and can't be broken down
  4. 6. anything that has mass and takes up space
  5. 7. The temperature at which a substance changes from a liquid to a gas.
  6. 9. A state of matter where the molecules in a substance are spread out and fast moving; no definite shape and no definite volume.
  7. 11. the smallest unit that retains the properties of an element
  8. 12. A substance that is composed of two or more different atoms.