test review

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Across
  1. 3. unit for mass
  2. 5. ___ forces cause no change in motion.
  3. 8. more than one atom combined
  4. 9. more than one type of atom
  5. 10. tells the number of atoms
  6. 12. piece of evidence of a chemical reaction, such as bubbles, foaming, fizzing
  7. 15. unit for acceleration
  8. 17. tool for force
  9. 18. ___ forces cause change in motion.
  10. 20. piece of evidence of a chemical reaction, such as two liquids producing a solid
  11. 22. any change in speed or direction
  12. 26. one type of atom, also found on the periodic table
  13. 27. piece of evidence of a chemical reaction, such as clear to blue
Down
  1. 1. a column on the periodic table
  2. 2. unit for force
  3. 4. the formulas present at the beginning of a chemical reaction
  4. 6. The ___ says matter is neither created nor destroyed.
  5. 7. a process where new substances are formed
  6. 11. a push or pull
  7. 13. amount of matter
  8. 14. tells the number of molecules
  9. 16. piece of evidence of a chemical reaction, such as temperature change, odor, light or sound
  10. 19. sum of all the forces
  11. 21. the formulas present at the end of a chemical reaction
  12. 23. one piece of an element
  13. 24. a row on the periodic table
  14. 25. Balanced forces have a net force of ___ N.