Chemical Reactions - Vocabulary Review

1234567891011121314151617
Across
  1. 1. The substances that result from a reaction
  2. 5. A reaction which releases energy is called ___________.
  3. 6. The amount of energy required for colliding molecules to break their bonds and react is called the _____________ energy.
  4. 7. A ________ replacement reaction is when a free element replaces one of the elements in a compound
  5. 9. When a complex substance breaks down into two or more simpler substances
  6. 12. If you increase the ______ area of a reactant by grinding it into a powder, it will react faster.
  7. 13. An expression that uses symbols and formulas to represent a chemical reaction
  8. 14. The substances that enter a reaction
  9. 16. The Law of ___________ of Mass states that the mass of the reactants is equal to the mass of products in a chemical reaction.
Down
  1. 2. The number in a chemical equation that describes how many molecules of a reactant there are
  2. 3. A reaction which absorbs energy is called _____________.
  3. 4. When two or more simple substances combine to for a complex substance.
  4. 8. A _________ replacement reaction is when two ionic compounds switch ions with each other.
  5. 10. This factor increases the rate of reaction by increasing the number of molecules in a given volume.
  6. 11. This factor increases the rate of reaction by increasing the kinetic energy of the colliding molecules.
  7. 15. A substance that speeds up the rate of reaction without getting involved in the reaction itself.
  8. 16. _____________ theory/model explains that for molecules to react they need to collide with the correct orientation and sufficient energy.
  9. 17. when substance combine to form new substances this is called a chemical ____________.