1. Have 1 Periodic Table per group!

2.  The mass number

3.  Protons & neutrons

4.  The Nuclear Model

5.  positive

6.  The Plum Pudding Model

7.  grams

8.  amu (atomic mass unit)

9.  Neutrons

10.  J.J. Thomson

11.  Ernest Rutherford

12.  John Dalton

13.  Plum Pudding Model

14.  All matter is composed of atoms  Atoms can’t be divided, created or destroyed  Atoms of different elements combine in simple whole-number ratios to form compounds  Atoms are identical in mass  Atoms can be combined, separated or rearranged

15.  NO!!

16.  Atoms of the same element can have different masses – isotopes  Atoms are divisible – Nuclear chem.  Atoms can be changed from one element to another- Nuclear chem.

17.  James Chadwick

18.  J.J. Thomson

19.  Theory

20.  Cathode Ray Tube

21.  8 8 8 8

22.  Mass Number

23.  Consisted of a cloud of evenly distributed positive charge with the negative electrons embedded randomly in it.

24.  one mole = molar mass

25.  The Plum Pudding Model

26.  56 Fe Fe26

27.  Cathode rays were attracted to the positive charge

28.  Cathode rays have a NEGATIVE charge

29.  beam of electrons

30.  7 7 7 7

31.  Democritus

32.  Atoms are mostly empty space

33.  the atom has a small dense positive region that caused the positive particles to bounce back…..the nucleus

34.  An atom makes up an element.  An element can’t be broken down.

35.  positive

36.  one mole = 6.02 X 10 23 atoms

37.  MOLE!!

38.  Scientific Law

39.  NUCLEUS

40.  Suggested that the electrons travel around the positively charged nucleus.  Difference is that the positive charges are NOT spread out like in Thomson’s Plum Pudding Model.

41.  NEUTRONS!

42.  The number of protons and electrons are the same!

43.  Atomic mass number

44.  Carbon - 14

45.  11

46.  6 6 6 6

47.  Molar Mass

48.  the mass number

49. Nuclear Symbol Atomic Number Protons Mass Number NeutronsElectrons 713 911 7 76 9 19 4019 20 F9 13 N7 20 9 40 K19 2119

50.  Average atomic mass

51.  1 atomic mass unit (amu)

52.  negative

53.  Protons- nucleus; positive charge  Neutrons – nucleus; neutral charge  Electrons – electron clouds; negative charge