C4 revision

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Across
  1. 3. what is a group in the periodic table called
  2. 5. what is the word to decribe number of protons
  3. 7. what happen if a atom grains a electron
  4. 8. what is the word uses to decribe same atomic number different atomic mass
  5. 9. what is the max number of atoms in the first shell
Down
  1. 1. what is a period in the periodic table
  2. 2. what is the brain of a atom
  3. 4. what happen if a atom loses a electron
  4. 6. what forms negative ions
  5. 8. what are charge participles