chemistry crossword puzzle

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Across
  1. 3. A tiny subatomic particle with a negative charge
  2. 5. Chemical reactions that absorb (or use) energy
  3. 10. An ionic compound of the H+ cation dissolved in water
  4. 12. The sum of the number of protons and neutrons in a nucleus
  5. 13. the unit of temperature scales
  6. 15. ending that is applied that describes the types of chemical bonds in the molecule
  7. 16. theory The theory that reactions occur when reactant molecules “effectively collide”
  8. 17. A physical property defined as a substance’s mass divided by its volume
Down
  1. 1. A condition when the reactants and products of a chemical equation have the same number of atoms of all elements presentcatalyst
  2. 2. A gas law that relates number of particles to volume
  3. 4. The smallest piece of an element that maintains the identity of that element
  4. 6. gas law A gas law that combines pressure, volume, and temperature
  5. 7. the name comes before the molecule
  6. 8. When a chemical reaction happens, energy is transferred to or from the surroundings.
  7. 9. Bind to the surface of another substance
  8. 11. The tendency of a substance to interact with itself
  9. 14. A species with an overall negative charge