Unit 6B Vocabulary-Morgan Hadley 4th period

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Across
  1. 2. change that occurs when substances combine to form a new substance
  2. 7. result of a chemical reaction
  3. 8. way of expressing information about the proportions of atoms that uses symbols, numbers, and parentheses
  4. 10. Principle that states that mass cannot be added or removed
  5. 11. group of elements that are extremely reactive located in column 1
Down
  1. 1. electrons in the atoms outer shell that form chemical bonds with other atoms
  2. 3. symbolic representation of a chemical reaction using symbols and formulas
  3. 4. change that doesn't effect the chemical composition of a substance
  4. 5. lasting attraction between atoms that forms chemical compounds
  5. 6. group of elements that are odorless, colorless, monatomic gases with low reactivity located in column 8 or 18
  6. 9. substance that is changed during chemical reaction