Chemistry Crossword Puzzels

123456789101112131415161718192021222324252627282930
Across
  1. 5. he discover neturons in 1932
  2. 7. Baking a cake is _____ change
  3. 9. good conductors of head and electricity
  4. 12. he was known as the father of modern chemistry
  5. 15. a region in space in which there is high probability of finding an e-
  6. 17. average mass of all the atomic masses of the isotopes of that atom
  7. 18. elements in this family are fluorine, chlorine, bromine, iodine and astatine
  8. 19. describing without numbers
  9. 21. poor conductors of heat and electricity
  10. 22. refers to how many protons an atoms of that elements has
  11. 24. shape of dumbbell, holds 2 electrons in each orbital
  12. 25. Longest wavelength, 700nm
  13. 26. columns of elements is called______
  14. 29. are bundles of light energy that emitted by e- as they go from higher energy level to lower levels
  15. 30. the amount of energy required to move an e- from one energy level to another
Down
  1. 1. table that organizes the elements is particular way
  2. 2. ______have the same number of electrons and protons
  3. 3. e- in the outer energy level of an atom
  4. 4. making orange juice is ______ change
  5. 6. shortest wavelength 400nm
  6. 8. they are horizontal; rows of elements is called______
  7. 10. using numbers to describe
  8. 11. they are the most reactive metals, always bonded with another elements
  9. 13. levels S,P,D,F are the ______
  10. 14. Plum pudding model
  11. 16. they are colorless gases that are extremely un-reactive
  12. 20. have properties of both metal and nonmetal
  13. 23. a part or aspect of something abstract, especially one that is essential or characteristic
  14. 27. ____are atoms that have an unequal number of electrons and protons
  15. 28. the energy level are like the ____ of a ladder but not equally spaced