Science

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Across
  1. 2. Any substance that has mass and takes up space by having volume
  2. 4. A force of attraction that holds atoms or ions together in a molecule or crystal.
  3. 5. term used for the elements and compounds after chemical reaction takes place
  4. 8. the smallest unit of ordinary matter that forms a chemical element.
  5. 9. term used for the elements and compounds before chemical reaction takes place
Down
  1. 1. When both sides of a chemical equation have the same number of atoms it is __________
  2. 3. change, Changes affecting the form of a chemical substance, but not its chemical composition.
  3. 6. If the numbers of each type of atom are different on the two sides of a chemical equation, then the equation is _________
  4. 7. the amount of matter in any given object