Chemistry Unit 1

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Across
  1. 2. Name of metals found in group 1
  2. 5. Sub-atomic particle with -1 charge
  3. 6. Centre of the atom
  4. 7. Model that suggests the atom is a ball of positive charge with negative electrons embedded
  5. 9. Charge when an atom gains electrons
  6. 11. Particles used in scattering experiment to develop the nucelus model
  7. 13. A substance made up of only one type of atom
  8. 14. When an atom loses or gains electrons
  9. 17. Atomic _______ - used to order the periodic table today
  10. 18. Found on the left side of the periodic table
Down
  1. 1. Name of elements found in group 7
  2. 3. Sub-atomic particle with a +1 charge
  3. 4. Charge when an atom loses electrons
  4. 5. Surrounding the nucleus where electrons are found
  5. 8. Arrangement of group 0 element with a full outer shell of electrons
  6. 9. Sub-atomic particle with 0 charge
  7. 10. A substance made up of 2 or more atoms chemically joined together
  8. 12. Atomic _______ - used to order the modern periodic table
  9. 15. Name of gases found in group 0
  10. 16. Metals found between group 2 and 3