Presentation is loading. Please wait.

Presentation is loading. Please wait.

Have a Periodic Table & a calculator per group!.  The mass number.

Similar presentations


Presentation on theme: "Have a Periodic Table & a calculator per group!.  The mass number."— Presentation transcript:

1 Have a Periodic Table & a calculator per group!

2  The mass number

3  true

4 2.75 g Al 1 mol Al 27 g Al 27 g Al = mol Al = mol Al

5  6.02X10 23 Al atoms

6  Protons & neutrons

7  The Nuclear Model

8  positive

9  The Plum Pudding Model

10 0.75 mol Na 6.02x10 23 atoms Na 1 mol Na 1 mol Na = 4.5x10 23 mol Na = 4.5x10 23 mol Na

11  proton

12  grams

13  amu (atomic mass unit)

14 2.5x10 15 atoms of Au 1 mol Au 6.02x10 23 atoms Au 6.02x10 23 atoms Au = 4.0x10 -9 mol Au = 4.0x10 -9 mol Au

15  Neutrons

16  J.J. Thomson

17  Ernest Rutherford

18  John Dalton

19  Plum Pudding Model

20  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

21  NO!!

22  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.

23  James Chadwick

24  J.J. Thomson

25  Theory

26  Cathode Ray Tube

27  8 8 8 8

28  Mass Number

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

30  one mole = molar mass

31  The Plum Pudding Model

32  56 Fe Fe26

33 0.25 mol Pb 207 g Pb 1 mol Pb 1 mol Pb = g Pb = g Pb

34  Cathode rays were attracted to the positive charge

35  Cathode rays have a NEGATIVE charge

36  beam of electrons

37  7 7 7 7

38  Democritus

39  Atoms are mostly empty space

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

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

42  positive

43  one mole = 6.02 X atoms

44  neutral

45  MOLE!!

46  Scientific Law

47  NUCLEUS

48  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.

49  NEUTRONS!

50  The number of protons and electrons are the same!

51  Their mass number

52  Carbon - 14

53  11

54  6 6 6 6

55  Molar Mass

56  the mass number

57 Nuclear Symbol Atomic Number Protons Mass Number NeutronsElectrons F9 13 N K

58  Average atomic mass

59  1 atomic mass unit (amu)

60  negative


Download ppt "Have a Periodic Table & a calculator per group!.  The mass number."

Similar presentations


Ads by Google