CHEMISTRY CROSSWORD

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Across
  1. 1. The smallest particle of an element
  2. 4. The negatively charged ions
  3. 7. The new substances formed as a result of a chemical reaction
  4. 9. Short form of an Element
  5. 10. Anything which occupies space and has mass
  6. 11. The gaseous form of a solid
  7. 13. The outermost shell of an atom
  8. 15. The number of protons in the nucleus of an atom
Down
  1. 2. The term used for a particular kind of matter
  2. 3. Combining capacity of an elemeny
  3. 5. The positively charged ions
  4. 6. The number of protons and neutrons in the nucleus of an atom
  5. 8. A pure substance which cannot be broken into two or more substances by any known physical and chemical mean
  6. 12. The substances which take part in a chemical reaction
  7. 14. Solid State formed from the gaseous state on cooling