Chemistry Crossword

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Across
  1. 2. atoms or a group of atoms that have been electrically charged
  2. 4. positive charges
  3. 5. a new substance produces in a chemical reaction between reactants.
  4. 6. negative charges
  5. 8. release heat
  6. 11. chemical combination of two or more elements in a specific ratio
  7. 12. results from a chemical reaction
  8. 16. made up of two or more substance combined
  9. 19. mixtures are easy to see
  10. 20. anything on the periodic table
  11. 22. the experiment is in the open
  12. 23. characteristics that can be used to describe a substances
Down
  1. 1. anything that has mass and occupies space
  2. 2. are pure substance formed as a result of the attraction between particles of opposite charges
  3. 3. absorbs heat
  4. 7. two or more substance are combined to form a new substance.
  5. 9. made up of one type of matter
  6. 10. the average mass of an element in atomic mass units
  7. 13. nonmetals combine
  8. 14. an element is defined by the number of protons
  9. 15. are subtance that help a reaction rate
  10. 17. the experiment is closed a bag
  11. 18. if it a solid or a liquid how it is measured
  12. 21. a substance that reacts with another substance.
  13. 24. two or more substance that look like are one