The Chemistry of life

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Across
  1. 4. Neither positive or negative
  2. 6. The complete transfer of some electrons from one atom to another
  3. 7. A substance that cannot be broken down into components
  4. 9. A substance that consists of two or more elements
  5. 11. The Giving off of rays of energy
  6. 13. No electrical charge
  7. 14. Negatively charged particle
Down
  1. 1. Sharing of one or more pairs of electrons between two atoms
  2. 2. The attraction between a hydrogen atom with a partial negative charge
  3. 3. One of two or more species of atoms
  4. 4. The structure of a cell
  5. 5. the basic unit of matter
  6. 8. A group of atoms bonded together
  7. 10. Molecule with a net electrical charge
  8. 12. Positively charged particle