Physical Science Chemistry Vocabulary Final Review

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Across
  1. 2. time it takes for half of a material to decay
  2. 4. atom part that has positive charge
  3. 6. bond between metal elements
  4. 7. has 12 protons
  5. 10. Calcium is in this Earth Metal family
  6. 12. making one side of chemical equation equal to the other
  7. 16. electrons travel these paths
  8. 18. mixing acid with base
  9. 21. center section of an atom
  10. 22. decay that a sheet of aluminum can stop
  11. 24. Atomic ____ is the number protons and neutrons
  12. 25. has a pH of 0 - 6, tastes sour
  13. 26. bond made with metal and non-metal
  14. 27. called the ____ gases because they are inert
Down
  1. 1. atomic model with orbitals
  2. 2. Iodine is in this family
  3. 3. type of element copper is
  4. 5. neutral charged part of atom
  5. 8. decay particle which is a Helium atom
  6. 9. type of chemical that tastes bitter
  7. 11. type of element Oxygen is
  8. 13. bond between non-metals
  9. 14. 92 protons and electrons
  10. 15. same element, different number of neutrons
  11. 17. this type of decay has the highest energy
  12. 19. any particle that has a charge
  13. 20. family that contains Potassium
  14. 23. negative part of the atom
  15. 24. element that likes to give up its valence electrons