science crossword

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Across
  1. 4. metal reacts with a non metal
  2. 6. in energy level
  3. 10. the outermost energy level
  4. 12. used to clean the inside of a test tube or graduated cylinder
  5. 15. its atomic number is 3
  6. 18. the thing that you intend to change in an experiment
  7. 20. prediction
  8. 22. horizontal row of elements
  9. 23. has mass and volume
  10. 24. baking soda reacts with acid to create CO2
  11. 26. on the left side of the periodic table
  12. 27. measure of how difficult a liquid flows
  13. 29. 2 or more different types of pure substances
  14. 30. atoms that share electrons
  15. 31. only 1 phase
  16. 32. cannot me broken down into simpler substances
Down
  1. 1. gas to liquid
  2. 2. may explode due to reaction to fire, shock, friction, heat or puncture
  3. 3. most stable elements
  4. 5. using our senses to make an observation
  5. 7. used to transport a hot beaker
  6. 8. involve numbers and a unit to make obsvervations
  7. 9. spaces, attractions, movement, energy
  8. 11. same atomic number, different mass number
  9. 13. spaces between particles are very small
  10. 14. Niels Bohr came up with the...
  11. 16. group 17 (VIIA)
  12. 17. easiness to be hammered into a sheet
  13. 19. may explode if heated, punctured or dropped
  14. 21. smallest part of an element
  15. 25. elements arranged in their periodic table according to their...
  16. 28. a particle, atom or molecule with a net electrical charge