Chemistry

Edit Answers
123456789
Across
  1. 1. a type of particle with two protons and two neutrons. Has a +2 charge.
  2. 5. the relative ability of an elements atoms to attract electrons.
  3. 6. a pure substance that cannot be broken down into simpler substances.
  4. 8. the center of the atom
  5. 9. the amount of mass per unit volume
Down
  1. 2. a mixture that is not uniform throughout.
  2. 3. a mixture that is uniform throughout.
  3. 4. the smallest particle of an element that keeps that elements properties.
  4. 7. a negatively charged particle.