Chemisty

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Across
  1. 3. Substance present at the start of a chemical reaction
  2. 6. Number in front of a symbol
  3. 8. Substance formed as a result of a chemical reaction
  4. 9. The smallest part of a chemical element
  5. 10. subatomic particle with a positive electrical charge located in the nucleus
Down
  1. 1. Shows how many atoms of an element
  2. 2. uses number and elements to give information
  3. 4. subatomic particle with a negative electrical charge
  4. 5. Combination of 2 or more bonded element
  5. 7. subatomic particle with a neutral electrical change