Chemistry Unit 2 Cross Word

Edit Answers
123456789101112131415161718
Across
  1. 7. The total number of protons and neutrons in the nucleus of an atom
  2. 9. Ion with a positive charge
  3. 13. Stated that electrons can be found in specific circular paths orbiting the nucleus.
  4. 14. Occur when atoms are separated,joined or rearranged in a different combination.
  5. 16. Ion with a negative charge
  6. 17. Particles and rays emitted from the radioactive source
Down
  1. 1. discovered the nucleus of an atom, he said most of the atom is empty space.
  2. 2. Used the scientific method to revise Democritus's model.
  3. 3. Number of wave cycles that pass a give point per unit of time.
  4. 4. Distance between crest
  5. 5. A wave's height from zero to crest
  6. 6. Number of protons in the nucleus of an atom
  7. 8. Proposed that atoms were indestructible and indivisible.
  8. 10. Determined the electrons charge and mass using the oil drop experiment.
  9. 11. Are composed of tiny indivisible particles called atoms.
  10. 12. Is 80% of the periodic table.
  11. 14. Discovered the neutron.
  12. 15. Discovered electrons using a cathode ray tube.
  13. 18. The smallest particle of an element that retains its identity in a chemical reaction.