Chemical Reactions Unit

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Across
  1. 1. what you must do to a chemical equation for it to "work"
  2. 5. the rearranging of atoms between reactant and product
  3. 7. a substance is broken down into two or more elements
  4. 8. the mass of an entire molecule
  5. 9. how you know how many of a specific atom are in a molecule
  6. 11. molecules that have a charge, making them an ion
  7. 13. two or more elements combine to form a new product
  8. 14. when an atom replaces a similar atom in an equation
  9. 15. how you know how many of a molecule is in a reaction
  10. 17. a chemical reaction that gives off heat
Down
  1. 2. shows relationship between reactants and products using symbols
  2. 3. the atoms or molecules that are produced in a reaction
  3. 4. a chemical reaction that absorbs heat
  4. 6. when two atoms replace two similar atoms in a equation
  5. 10. the atoms or molecules doing the reacting
  6. 12. the mass of a reaction must be the same on both sides of the equation
  7. 16. the type of chemical reaction that always produced CO2 and water