UNIT 4&5

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Across
  1. 3. contains an equal number of products
  2. 5. true or false a chemical equation represents a chemical reaction
  3. 7. the arrow in a chemical equation means to ?
  4. 8. is when one one compound breaks down into two or more simpler products
  5. 11. speeds up reaction
  6. 13. is also known as a skeleton equation
  7. 14. percent by a mass of each element in a compound
  8. 15. what is the molar volume
Down
  1. 1. the whole number in front of the formulas
  2. 2. tells the actual number of each kind of atom
  3. 4. formula tells the actual number of each kind of atom present in a molecule of a compound
  4. 6. is when two or more substances react to form a new substance
  5. 9. what law states that mass is neither created nor destroyed in a ordinary chemical reaction
  6. 10. formula lowest whole number ratio of the atoms
  7. 12. formula is used to determine the number of atoms