Sceince

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Across
  1. 2. movement of heat by water and air
  2. 4. small particle of matter that has a negative charge
  3. 6. potential difference across a conductor
  4. 7. transfer of heat by electromagnetic waves
  5. 9. a group of atoms bonded together
  6. 10. is the horizontal raw of the periodic table
  7. 11. unit of measure of the rate of a electron flow or current in an electrical conductor
  8. 13. transfer of energy by direct contact only with solids
  9. 14. the group 18 of the periodic table is called_________
  10. 15. a substance whose atoms all have same number of protons
  11. 17. space where there is no matter
  12. 18. neutral subatomic particle that is constitued of every atomic nucleus except ordinary hydrogen
  13. 19. a charged atom or molecule
  14. 20. is the vertical column of the periodic table
Down
  1. 1. machine that converts electrical energy into mechanical energy
  2. 3. waves tahta re created as a result of vibrations between an electric field and a magnetic field
  3. 5. the concentration of a force
  4. 8. subatomic particle that has a positive charge
  5. 12. the smallest particle of a chemical element that can exist
  6. 16. effect a force may cause by an object to turn abut a pivot