Chemistry crossword

1234567891011121314151617181920
Across
  1. 3. Positively charged particle found in the nucleus
  2. 4. Mixture where one substance is evenly dissolved in another
  3. 7. Scale Measures how acidic or basic a substance is
  4. 8. Starting substance in a chemical reaction
  5. 10. Atoms of the same element with different numbers of neutrons
  6. 16. Group of atoms bonded together acting as a single unit
  7. 17. Bond Bond formed when atoms share electrons
  8. 19. Substance that dissolves another substance
  9. 20. Number Number of protons in an atom
Down
  1. 1. Substance formed from a chemical reaction
  2. 2. Substance formed when two or more elements chemically combine
  3. 5. Reaction Process where substances change into new substances
  4. 6. Number Total number of protons and neutrons
  5. 9. Smallest unit of an element that still keeps its properties
  6. 11. Negatively charged particle moving around the nucleus
  7. 12. Pure substance made of only one type of atoms
  8. 13. Neutral particle located in the nucleus
  9. 14. Bond Bond formed by transfer of electrons between atoms
  10. 15. substance that produces hydrogen ions (OH-) in solution
  11. 18. substance that produces hydrogen ions (H+) in solution