Thirds Year Science

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Across
  1. 3. found in humans
  2. 4. element used to clean the pool
  3. 7. found only in plant cells
  4. 9. where power is made and stored in a cell
  5. 12. the element used to make foil
  6. 13. tiny units that make up living tissue
  7. 15. used in balloons
  8. 16. a mixture of two or more elements.
Down
  1. 1. spin on the outside of the atomic nucleus.
  2. 2. a table of elements
  3. 5. made up of 2 Hydrogen atoms and 1 oxygen atom
  4. 6. surrounds the cell
  5. 8. tiny things make up elements
  6. 10. we need the gas to breathe
  7. 11. controls the cells activities
  8. 14. used to make red blood cells