IPS Lesson 15 Crossword

Edit Answers
123456789101112131415161718192021222324
Across
  1. 4. can be active or passive
  2. 6. protons+neutrons
  3. 8. atomic number of boron
  4. 10. smallest particle in an atom
  5. 13. charged atom
  6. 16. as this increases, gravitational force decreases
  7. 17. has 82 protons in the nucleus
  8. 18. neutral atom has 18 electrons
  9. 20. number of these equal the atomic number
  10. 21. the SI unit for force
  11. 23. country on earth where you experience the lowest gravity
  12. 24. will be different on Mars than on the earth
Down
  1. 1. used to make testosterone
  2. 2. atomic number of 21
  3. 3. unit for measuring mass
  4. 5. the number of electrons in a neutral atom of chlorine
  5. 7. measured in meters/second
  6. 9. atoms of the same element with different masses
  7. 11. made inside the human body
  8. 12. atomic number of 30
  9. 14. similar mass to proton but no charge
  10. 15. the earth is perfectly round
  11. 19. power source for almost all USA submarines
  12. 22. the number of neutrons in an atom of K-39