Chemistry Revision Crossword

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Across
  1. 2. The space an electron occupies is called an
  2. 3. What is the seventh element in the periodic table.
  3. 7. Transition can be hammered into shape without breaking. They are ……
  4. 9. One of the allotropes of carbon which is used in jewellery
  5. 11. The elements between the groups 2 and 3 are called the
  6. 13. This is one of the types of subatomic particle
  7. 14. A type of bonding where the electrons are shared
  8. 15. If transition metal ions are present in a solution a coloured solution will be formed when we add…
  9. 17. This element is used to make nuclear power
  10. 19. The emission of energy as electromagnetic waves or moving subatomic particles
  11. 21. What is the common name for CaCO3
  12. 23. The fourth alkali metal
  13. 24. Which gas turns limewater milky?
  14. 25. A type of bonding where electrons are transferred from one atom to another
  15. 28. Hydrogen burns with a……
  16. 29. A radioactive isotope used in the treatment of cancer
Down
  1. 1. Plants can create most of the world’s free oxygen through this process
  2. 4. This process is used to find the age of dead organisms by comparing the amounts of two isotopes of carbon.
  3. 5. The time it takes for half of the atoms of a substance to decay
  4. 6. Elements with the same number or protons and electrons but different numbers of….
  5. 8. Oxygen and nitrogen can be obtained from liquid air by a process called…
  6. 10. The ore that pure uranium and pure radium can be obtained from.
  7. 12. He discovered the electron
  8. 16. woman discovered radium?
  9. 18. The series of processes by which nitrogen and its compounds are interconverted in the environment and in living organisms, including nitrogen fixation and decomposition
  10. 20. What is the flame colour for potassium
  11. 22. What are the group seven elements called?
  12. 26. The atoms of halogens are……
  13. 27. What is the flame colour for copper