Science Crossword Puzzle

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Across
  1. 2. / Made of one type of atom
  2. 7. / Two or more atoms
  3. 8. Reaction / A chemical reaction the absorbs heat (gets colder) as it reacts.
  4. 9. / The substance in a chemical reaction that undergoes change. The ingredients of the reaction.
  5. 11. / All substances are the same throughout
  6. 12. Property / Observable,can be measured
Down
  1. 1. / Anything that has mass or volume
  2. 3. / Two or more substances that are physically combined
  3. 4. / more than one atom
  4. 5. / Visibly different substances
  5. 6. / The new substance that is formed in a chemical reaction.
  6. 10. Reaction / Causes chemical change when one or more substances change to form one or more new substances.