Work Science

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Across
  1. 3. The maximum number of known electron shells in an atom
  2. 6. When a single compound breaks down into two or more simpler products
  3. 9. The fifteenth element on the periodic table
  4. 13. When elements or compounds rearrange themselves in an equation
  5. 14. The type of atom bonding when electrons are shared
  6. 15. The name for a row in the periodic table
  7. 16. A chemical reaction between a substance and oxygen
  8. 19. The name for a column in the periodic table
  9. 20. The name for a bunch of atoms bonded together
  10. 22. When a nucleus loses or gains a neutron
  11. 24. The last element in the periodic table (118th)
  12. 25. The element with the chemical symbol 'Mg'
Down
  1. 1. The name of element made only in a lab by scientists
  2. 2. What is produced when elements combine together chemically
  3. 4. The name of the subatomic particle orbiting the nucleus
  4. 5. A reaction when an acid is added to a base, forming water and at least one other substance
  5. 7. The name for the number of protons in an atom (2 words no spaces)
  6. 8. The positively charged subatomic particle within the nucleus of an atom
  7. 10. Chemicals that change colour when added to an acid or a base
  8. 11. An element made up of only one atom (2 words no spaces)
  9. 12. The process or result of something being oxidised
  10. 17. When two or more substances combine to produce a single substance
  11. 18. The total number of protons and neutrons in an atom (2 words no spaces)
  12. 21. The name of the person to develop the first scientific model of an atom (2 words no spaces)
  13. 22. The type of atom bonding when electrons are transferred
  14. 23. The sharing of electrons in chemistry
  15. 26. The name for the metals in the first group of the peroidic table