Chemistry

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Across
  1. 1. type of bond that involves oppositely charged ions in a compound
  2. 3. a negatively charged ion
  3. 4. is a substance that is made up of two or more different elements combined together chemically
  4. 8. has a pH less than 7
  5. 9. number represents the number of protons and neutrons in the nucleus of an atom
  6. 10. is a substance which cannot be split into simpler substances by chemical means
Down
  1. 1. a charged atom or group of atoms
  2. 2. a positively charged ion
  3. 4. type of bond that involves the sharing of electrons
  4. 5. scale used to determine if something is acidic or basic
  5. 6. has a pH higher than 7
  6. 7. number represents the number of protons in the nucleus of an atom