Chemistry Chapter 1

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Across
  1. 2. a column of chemical elements. Elements in the same column have similarity in both their chemical and physical properties
  2. 3. anything that takes up space
  3. 5. the center of an atom
  4. 9. says what atoms, and how many of each type, are in the molecule
  5. 11. a system for arranging the chemical elements
  6. 12. is the number of protons in the atom
  7. 14. are the smallest unit of matter
  8. 16. an atom is made out of mostly
Down
  1. 1. subatomic particle with a positive charge
  2. 4. a pure substance that is made from a single type of atom
  3. 6. this tells us how many groups of the molecule are present
  4. 7. subatomic particle with a negative charge
  5. 8. a row of chemical elements. All elements in the same row have the same number of electron shells.
  6. 10. subatomic particle with no charge
  7. 13. is made out of two or more atoms bonded together
  8. 15. tells us the number of atoms in each molecule