Biology 2-1 The Nature of Matter

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Across
  1. 3. a pure substance that consists entirely of one type of atom
  2. 6. Intermolecular forces
  3. 8. atoms of the same element that have different numbers of neutrons
  4. 9. the basic unit of matter
  5. 10. positively and negatively charged atoms
  6. 11. a bond that forms from the transfer of electrons
Down
  1. 1. the smallest unit of most compounds
  2. 2. located in the center of the atom
  3. 4. a bond that forms from the sharing of electrons
  4. 5. negatively charged particle
  5. 7. a substance formed by the chemical combination of two or more elements in definite proportions