Chemistry

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Across
  1. 3. A substance that reacts with other substances in a chemical reaction
  2. 6. Substance made up of only one type of matter
  3. 11. Pure substances formed by the combination of two non-metals
  4. 12. Subatomic particle with a positive electrical charge
  5. 14. Cloudy mixture that cannot be separated
  6. 15. Cloudy mixture that can be separated
  7. 16. A chemical reaction which absorbs heat energy
  8. 18. A combination of symbols that represent a compound and the amount
  9. 19. Pure substances formed by the combination of a metal and a non-metal
  10. 20. A chemical change which releases heat energy
  11. 22. Number of protons an element has
  12. 23. A new substance produced in a chemical reaction
  13. 24. First chemistry text
Down
  1. 1. Two or more substances combined
  2. 2. Average mass of an element
  3. 4. Arranged elements in the periodic table according to their properties
  4. 5. In a chemical reaction the total mass of the reactants is equal to the total mass of the products
  5. 7. Two or more substances in which the different substances are easy to see
  6. 8. One or two letters that represent an element
  7. 9. Subatomic particle with a negative electrical charge
  8. 10. Two or more pure substances that look like one substance
  9. 13. Subatomic particle with no charge
  10. 14. When two or more substances react to form a new substance
  11. 17. One type of matter
  12. 21. Chemical combination