Chemistry

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Across
  1. 1. A substance that contains only one kind of atom
  2. 6. Formed by the atom losing valence electrons
  3. 7. Anything that has mass and takes up space
  4. 8. An atom that has a different number of neutrons from the element seen on the Periodic Table
  5. 13. The ability of an atom in a molecule to attract electrons towards itself
  6. 16. Horizontal columns on the Periodic Table
  7. 17. A substance that has two or more types of atoms that are chemically combined
  8. 18. An atom or group of atoms that has a positive or negative charge
  9. 19. Is a state of matter that has a definite shape and volume
Down
  1. 2. A combination of two or more substances
  2. 3. Formed by the atom gaining valence electrons to have a valence of 8
  3. 4. Is the state of matter that has NO definite shape or volume
  4. 5. A substance breaks down into two or more simpler substances
  5. 9. Has no fixed shape or volume, is less dense than solids or liquids
  6. 10. Vertical columns on the Periodic Table
  7. 11. The substance you start with
  8. 12. Two substances combine to form a single new substance
  9. 14. Smallest particle of an element
  10. 15. The substance you end up with
  11. 20. Has a definite volume but takes the shape of its container