Science Study Guide

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Across
  1. 3. giving a piece of paper, how can you cause a chemical change
  2. 4. one black Atom + 2 white Atoms equals what
  3. 7. what are 2 other pieces of evidence that supports the question above
  4. 9. make a claim about whether it's stupid though undergoes a chemical reaction during burning
  5. 11. a combustion reaction occurs between one molecule of methane (CH4) and two molecules of oxygen (O2) how many atoms of carbon hydrogen oxygen make up the products for this combustion reaction
  6. 13. How could you show the law of conservation of mass
Down
  1. 1. which of the following is an example of a chemical change ( bending a pop can, evaporating of milk, melting wax, burning paper)
  2. 2. What is the law of conservation of mass
  3. 5. when a substance undergoes a chemical change, it's identity does not change (true, or false)
  4. 6. which of the following is an example of a chemical reaction ( lighting a match, dissolving salt underwater, freezing water, breaking a glass)
  5. 8. list two signs that a chemical change has occur
  6. 10. an example of a chemical change is ( a magnet sticking to the refrigerator, dew disappearing from the grass, mashing potatoes, frying a hamburger)
  7. 12. a change in color is evidence of a _____ change