Chemical Reactions Crossword

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Across
  1. 2. The principal which states that matter cannot be created or destroyed.
  2. 7. A symbolic representation of a chemical reaction in which both sides of the equation contain equal numbers of atoms in each element.
  3. 8. A number written below and to the right of a chemical symbol that shows the number of a specific type of atom present.
  4. 9. The process by which one or more substances change to produce one or more different (new) substances.
  5. 11. A notation that uses chemical symbols and numbers as subscripts to represent the type and number of atoms.
  6. 12. The substance(s) that go together in a chemical equation (found in front of the arrow).
Down
  1. 1. A solid substance that forms in a liquid from a chemical reaction.
  2. 3. A number placed in front of chemical formula to describe the number of molecules.
  3. 4. The substance(s) that are produced in a chemical reaction (the arrow always points toward these).
  4. 5. The amount of matter an object contains (usually measured in grams).
  5. 6. These are signs of a chemical reaction: 1.gas 2.odor 3.temperature change 4.color 5. precipitate
  6. 10. Chemical formulas and symbols written to represent a reaction.