Chemical Reactions and Periodic Table

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Across
  1. 6. A reaction that takes in energy and stores it.
  2. 7. Something that can be observed about a substance, such as color, smell, or boiling point.
  3. 11. The law of _____ of matter that states that matter cannot be created or destroyed.
  4. 12. Things that are too small or too large to be seen can be studied with _____.
  5. 13. During a chemical reaction, atoms do not ____ from one type to another.
  6. 14. A process in which atoms rearrange to form new substances.
  7. 16. The tiny pieces that all matter is made of.
Down
  1. 1. Something that is made of all the same atoms or groups of atoms.
  2. 2. Different substances have _____ properties.
  3. 3. Substances have different properties because they are made of different _____ of atoms.
  4. 4. An object, diagram, or computer program that helps us understand something by making it simpler or easier to see.
  5. 5. A reaction that releases stored energy.
  6. 8. An ending substance that is made during a chemical reaction.
  7. 9. A starting substance that is part of a chemical reaction.
  8. 10. The relative size of things.
  9. 15. The mysterious reddish-brown substance in the pipes of Westfield.