1. ATOMIC THEORY REVIEW

2. What is ALL matter made of?
ATOMS !!!
What are the 3 subatomic particles?
Protons
neutrons
electrons

3. What are the charges of the subatomic particles?
protons (+)
positive
neutrons (0)
neutral
electrons (-)
negative
We know that there are the same number of p+ and e- in atoms on the Periodic Table… So What is the overall charge of any atom?
The overall charge of any atom is
NEUTRAL… the positive charge cancels out the negative charge = 0!!!

4. What are the masses (amu) of the subatomic particles?
Atomic mass unit (AMU)
p+ = 1amu n = 1amu e- = 0 amu
What is this AMU stuff?????
2.2 lbs= 1 kg
1.66 x kg = 1 amu

5. What are the two areas of an atom?
Nucleus and electron cloud

6. QUICK REVIEW- ATOMS Protons + 1 nucleus p+ neutrons nucleus no 1 _
Sub-atomic particles:.
protons, neutrons, and electrons
Parts of the atom:
nucleus and electron cloud
particles
charge
amu
location
abbrev.
Protons + 1
nucleus p+
Neutral (0)
neutrons
nucleus no 1
Electron
cloud _
Electrons e-

7. Where are the p+, n, and e- located in an atom?
p+ in the nucleus n in the in nucleus e- in the electron cloud

8. Electron Cloud Nucleus Where is most of the volume of an atom located?
Where is ALL the mass in an atom located?
Nucleus
Electron Cloud

9. What does a Bohr model of the atom look like?
The nucleus contains the p+ and n… while the electrons “orbit” the nucleus in the energy rings of the e- cloud.

10. So what are the charges of the different areas?
1. So what is the overall charge of the nucleus?
Positive
2. So what is the overall charge of the electron cloud?
Negative

11. Atomic Inventory Protons (+) (Atomic Number)
Neutrons (Atomic Mass minus atomic# or Protons)
Electrons (–) (Same number as protons in a neutral atom)

12. Energy Levels of the Atom
Atoms can have several energy levels. Sometimes they are also called energy rings, shells or orbits.
The Nucleus
2e-
8 e-
8 e-
18 e-
18 e-
32e-
32e-
P+ N0
1st
shell
2nd
shell
3rd
shell
4th
shell
5th
shell
6th
shell
7th
shell

13. Lets take a look at the Periodic Table!

14. Burning Hindenburg

15. Burning Hindenburg

16. Atomic Inventory

17. Bohr Model Practice 1. H 2. Be 3. Na 4. K 5. Rb 6. He 7. F 8. Cl 9. Br

18. More Bohr Model Practice
1. Fr 2. Te 3. Sn 4. Cs 5. Kr
6. At
7. Ga
8. Rn
9. Ag
10. W

19. What Bohr model patterns are you starting to see develop?
Periodic Table Patterns
The atomic number is the same number as the number of protons and electrons.
Atoms get larger as you move down and two the right on the periodic table.
As you move from left to right on the periodic table, you gain protons and electrons and neutrons.
As you go down from the periodic table, the atom gains another energy shell or orbit.

20. Valence Electrons
Valence electrons are electrons in the outermost shell of an atom.
They determine whether the atom will bond with another atom.
How many valence
electrons does
lithium have here?
1 valence electron
Circle the valence electrons
From your warm up.

21. 1. What is the subatomic particle that determines the identity of the element?
Protons
Electrons
neutrons 20

22. 2. The periodic table is arranged according to:
Atomic symbol
Atomic mass
Atomic number
Boiling point 20

23. No! Can you find on the periodic table where they are not?
2. True of False: Elements on the periodic table increase according to their masses.
True
False
No! Can you find on the periodic table where they are not? 20

24. How is the Periodic Table is Arranged?
1. 89, 90, 92, 94,106
2. So the periodic table is arranged according to what then?
A. Atomic Symbol
B. Atomic mass
C. Atomic number
D. Boiling point

25. Metals vs. Non-Metals Stair steps Non-metals Metals
Man made elements and Rare Earth metals

26. Metal, Non-metals and Metalloids
Most elements are metals. 88 elements to the left of the stairstep line are metals or metal-like elements.
Nonmetals are found to the right of the stairstep line. Their characteristics are opposite those of metals.
Metalloids are elements on both sides of the zigzag line. They have properties of both metals and nonmetals.

27. Metalloids on the Periodic Table
Periods/ Rows
Metalloids
FAMILIES/ GROUPS

28. Families on the Periodic Table

29. Elements in the Earth’s ATMOSPHERE
Amount
Nitrogen
78.1 %
Oxygen
20.9 %
Argon
0.96 %

30. Elements in the Earth’s OCEANS
Amount
Oxygen
85.84 %
Hydrogen
10.82 %
Chlorine
1.94 %
Sodium
1.08 %
Magnesium %

31. Elements in the Earth’s CRUST
Amount
Oxygen
46.1 %
Silicon
28.2 %
Aluminum
8.23 %
Iron
5.63 %
Calcium
4.15 %

32. So where do the names come from?
These abbreviations are for there LATIN names of the elements.
Iron (Fe)………….……Ferrum
Sodium (Na)….. …….Natrium
Gold (Au)……………Aurum
Silver (Ag)………….Argentum
Potassium (K)………… Kalium
Copper (Cu) ………….Cuprum
Mercury (Hg) ……Hydragyrum
Antimony (Sb)………… Stibium
Tin(Sn)….………… Stannum
Lead(Pb) ……………..Plumbum
Tungsten(W)………….Wolfran

33. Use your knowledge of the relationships in the periodic table to answer each question.
Mystery Table

34. 1. If element D has 14 protons, how many would an atom of element F have?15 12 56 16 A B C D E F G H I
Mystery Periodic
Table 30

35. 2. If Element H has 3 valence electrons, how many would element C have?1 2 3 4 A B C D E F G H I
Mystery Periodic
Table 30

36. 3. If element I has 4 energy levels, how many would element B have?1 2 3 4 A B C D E F G H I
Mystery Periodic
Table 30

37. 4. If element C has 22 electrons, how many would an atom of element A have?24 16 20 A B C D E F G H I
Mystery Periodic
Table 30

38. 5. If element C has 4 valence electrons, how many would Element G have?1 2 3 4 A B C D E F G H I
Mystery Periodic
Table 30

39. 6. Where is all the volume (space) an atom takes up?
Nucleus
Electron cloud 30

40. 7. What is the charge of the NUCLEUS of an atom?
Negative
Positive
neutral 30

41. 8. What are valence electrons?
Electrons that are radioactive
Electrons that are on outside energy level
Electrons that are on the first energy level
Electrons that are on the midlel energy level 30

42. 9. How many valence electrons does Magnesium have?12 8 2 30

43. 10. Which subatomic particle determines the identity of an atom?
Protons
Electrons
neutrons 30

44. 11. What is the overall charge of an atom?
Positive
Negative
Neutral 30

45. 12. Titanium is:
A metal
A non-metal
A metalloid 30

46. 13. Boron is:
A metal
A non-metal
Metalloid 30

47. 14. The fourth ring of an atom can hold _____ electrons2 32 8 18 30

48. 15. Where is almost all of the mass in an atom?
In the protons
In the neutrons
In the electron cloud
In the nucleus 30

49. 16. Surprisingly the earth’s atmosphere is mostly made of:
Nitrogen
Oxygen
Argon
Hydrogen
Calcium 30

50. 17. Most elements are:
Metals
Non-metals
Metalloids 30

51. 18. Chlorine is:
A metal
A non-metal
A metalloid 30

52. 19. Most element symbols of elements are abbreviations of the English word. Some are different because:
Scientists like fancy names
The atom was named in Latin before English became the dominant language
Not all scientists speak English and the atom was named in their language.
Some atoms are named after the scientist who discovered it. 30

53. 20. True or False: It is okay to put electrons in any electron ring.30