Chemistry Yr10

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Across
  1. 3. a small subatomic particle with a positive charge
  2. 6. a substance that donates H+ ions
  3. 9. a small subatomic particle that contributes to the mass number of an element
  4. 11. a small subatomic particle with a negative charge
  5. 13. positive ion
  6. 15. a substance that donates OH- ions
  7. 16. the smallest unit of an element
  8. 17. negative ion
Down
  1. 1. the number of protons and electrons in an element
  2. 2. when an acid and base react to form water and salt
  3. 4. the number of electrons in a full second outer shell
  4. 5. the number of protons and neutrons in an element
  5. 7. compound formed when a positive and negative ion get attracted to each other to form a neutral compound
  6. 8. the special name for electrons found in the outermost shell / a special name for the outermost shell
  7. 10. an atom that has gained or lost electrons in order to become stable
  8. 12. the number of electrons in a full first outer shell
  9. 14. the electrostatic charge on an atom or ionic compound