8th Book Test Review MATTER

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Across
  1. 3. A substance that exists before a chemical reaction takes place and that changes as a result of the reaction
  2. 5. A limitation on the range of possible solutions to a design problem
  3. 7. A group of two or more atoms that are held together by chemical bonds
  4. 8. An individual particle of an element
Down
  1. 1. A process in which one or more new substances form from other substances
  2. 2. A new substance that forms during a chemical reaction
  3. 4. Matter that has constant chemical composition and characteristic's
  4. 5. The requirements that must be met for an engineering solution to be successful
  5. 6. A unique particle of matter that is a fundamental building block of matter