Lesson 17 and 18

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Across
  1. 3. A reaction were a single compound undergoes a reaction that produces two or more simpler substances.
  2. 4. Represents with symbols and formulas, the identities and relative molecular or molar amounts of the reactants and products in a chemical reaction.
  3. 5. A reaction were a substance combines with oxygen, releasing a large amount of energy in the form of light and heat.
  4. 6. The excess _______ can be compared to a new soccer player who is in the bench most of the game but then is called up to the field when one of the other players is really tired.
  5. 8. Law of ________ states that mass is neither created nor destroyed in any ordinary chemical reaction.
  6. 10. The substance that is not used completely.
  7. 11. A reaction were two or more substances combine to form a new compound.
  8. 12. When one or more substances have undergone a change in identity.
  9. 14. The ratio of the actual yield to the theoretical yield X 100.
  10. 15. Is the maximum amount of product that can be produced from a given amount of reactant.
Down
  1. 1. A reaction were one element replaces a similar element in a compound.
  2. 2. Substance that is completely used up first in a reaction.
  3. 7. A reaction were the ions of two compounds exchange places in an aqueous solution to form.
  4. 9. Its important to balance ________ in such cases as were the amount of reaction depends on how much of each reactant a company needs to buy.
  5. 13. Measured amount of a product obtained from a reaction.