Chemsitry- Ch. 1: Describing Matter

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Across
  1. 3. System of measurement based on multiples of ten, used for mass, length, and time
  2. 4. Anything that has mass and takes up space but cannot be created or destroyed
  3. 6. Force of attraction that holds two molecules together
  4. 10. The amount of space that matter occupies
  5. 11. Change in which one or more substances combine or break apart to form new substances
  6. 13. Property that can be observed without changing the identity of a substance
  7. 16. Measure of the average energy of motion of the particle of a substance; how hot or cold something is
  8. 17. Amount of matter in an object
  9. 18. Substance that cannot be broken down into any other substances by chemical or physical means
Down
  1. 1. Two or more substances together that physically combined, not chemically
  2. 2. Group of two or more atoms held together by covalent bonds
  3. 5. Smallest particle of an element that has all the properties of that element
  4. 7. Property of a substance that can be observed when the chemical composition of a substance changes
  5. 8. Measure of the force of gravity acting on an object
  6. 9. Change in which the form or appearance of a substance changes, not chemical composition
  7. 12. Substance made of two or more elements chemically combined in a specific ratio
  8. 14. Study of properties of matter and how matter changes
  9. 15. Ratio of mass to volume of a substance (mass/volume)