Chapter 7 and 13

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Across
  1. 5. representations of chemical reactions
  2. 6. construction of complex chemical compounds from simpler ones
  3. 8. number placed in front of a chemical symbol or formula
  4. 10. chemical reaction in which one reactant breaks down into two or more products
  5. 12. substance that takes part in and undergoes change during a reaction
  6. 14. substance that increases the rate of a reaction without itself being consumed
  7. 15. reactions in which the reactants absorb heat energy from the surroundings to form products
  8. 16. reaction in which the positive and negative ions
  9. 18. unit of measurement in the International System of Units
Down
  1. 1. has no fixed shape, but adapts its surface to the shape of its container
  2. 2. dimension taken through an object or body of material
  3. 3. species formed from chemical reactions
  4. 4. fluid can be either a liquid or a gas.
  5. 7. for assigning work
  6. 9. chemical bond between two atoms
  7. 11. chemical reaction that produces heat (has a negative
  8. 13. conversion factor between mass and volume
  9. 17. It is generated by the interaction and contact of a solid body with a fluid