Download Periodic Table Review Key

Periodic Table and Chemical Formula Review
Periodic Table:
Use the sample periodic table to answer the questions below:
F
B
G
C
E
A
D
H
1. Which element has the smallest atomic number?
F
2. Which element has the largest atomic number?
H
3. Which non-metal has the smallest atomic mass?
F
4. Which metal has the largest atomic mass?
D
5. Which elements are considered good conductors? C,E,D,
6. Which element is considered semi-conductors?
G
7. Which elements are considered poor conductors? F, B, A,H
8. Which element is considered metalloids?
G
9. Which elements have one valence electron?
F,E
10. Which elements have a full outer cloud (octet)?
B, H
11. Which element has 2 valence electrons?
C
12. Which elements have 8 valence electrons?
H
13. Which element is more reactive F or B?
F
14. Which elements are considered noble gases?
B, H
15. Which element is in group 2?
C
16. Which element is in period 6?
H
17. Which element has an atomic number of 12?
C
18. Which elements have 5 electron clouds?
E,D
19. Which element has 14 protons?
G
20. Which element has a combined total of 35 protons and neutrons?
21. Which element has 12 electrons?
C
22. Which element is in Period 3 Group 17?
A
A
23.
24.
25.
26.
27.
28.
Atom A and B would be found in which period? __2_
Atom B would be found in which group? __18__
Describe the reactivity of atom A. _____high_____
Describe the reactivity of atom B. _____non-reactive_______
Would atom A gain or lose valence electrons? __lose__
Would atom B gain or lose valence electrons? __neither__
Chemical Formulas:
29. Chemical formulas use symbols to represent a __substance__ while Chemical equations use
symbols to represent ___chemical reaction___.
30. Coefficients show the number of __molecules__ while subscripts show the number of
__atoms____.
31. In the following equation, AlBr2 + 3K  3KBr + Al, the number 3 is a _____Coefficient__
while the number 2 is called a ______subscript_____.
32. Which of the following requires a chemical reaction to break it down, an Element or a
Compound? ___Compound_____
Counting Atoms
33.
CaF2
# of elements in the compound __2__
List each element in the compound and determine the # of atoms of each element:
Ca = 1
F=2
Total # of atoms __3___
34.
2Be(OH)2
# of elements in the compound _3__
List each element in the compound and determine the # of atoms of each element:
Be= 2
O=4
H=4
Total # of atoms __10__
35.
3NO2 # of elements in the compound __2__
List each element in the compound and determine the # of atoms of each element:
N=3
O=6
Total # of atoms _9__