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Chemistry CBA3 Review

Total questions: 31

Worksheet time: 26mins

Name
Class
Date
1.

Isotopes of an element have a different number of...

a)

Protons

b)

Neutrons

c)

Electrons

d)

Mass

2.

Potassium-39 has how many neutrons?

a)

19

b)

18

c)

20

d)

21

3.

Rubidium has two common isotopes, 85Rb and 87Rb. If the abundance of 85Rb is 72.2% and the abundance of 87Rb is 27.8%, what is the average atomic mass of rubidium?

a)

85.468 amu

b)

37 amu

c)

85.6 amu

d)

86.4 amu

4.
What is the atomic mass of the pictured isotope?
a)
2
b)
4
c)
6
d)
Hehehehe
5.
What is the name of the pictured isotope?
a)
Copper-29
b)
Copper-63
c)
Copper-34
d)
CopperWopperHopperBopper
6.
Four isotopes of lead include lead-204, lead-206, lead-207, and lead-208.  The average atomic mass of lead is 207.2.  Which isotope of lead is likely to be the most abundant.
a)
204
b)
206
c)
207
d)
208
7.
Elements in the same ________ are more chemically similar.
a)
group
b)
period
c)
club
d)
table
8.
Which elements have the most similar chemical properties?
a)
K and Na
b)
K and Ca
c)
K and Cl
d)
K and S
9.

Semiconductors, or metalloids, can be described as...

a)

same as nonmetals

b)

bad conductors

c)

characteristics of metals and nonmetals

d)

same as metals

10.
Lithium (Li) is part of the _ family.
a)
alkali metals
b)
alkaline earth metals
c)
halogens
d)
Noble gases
11.
Chlorine (Cl) is part of the _ family.
a)
alkali metals
b)
alkaline earth metals
c)
halogens 
d)
noble gases
12.
Magnesium (Mg) is part of the _ family.
a)
alkali metals
b)
alkaline earth metals
c)
halogens
d)
noble gases
13.
Neon is part of the _ family.
a)
alkali metals
b)
alkaline earth metals
c)
halogens
d)
noble gases
14.
Which group of elements have the most reactive nonmetals?
a)
metalloids
b)
halogens
c)
alkali metals
d)
noble gases
15.
Which group of elements have the most stable, nonreactive elements (will not bond with others)?
a)
metalloids
b)
halogens
c)
alkali metals
d)
noble gases
16.
How many valence electrons does an alkaline earth metal have? 
a)
1
b)
2
c)
7
d)
8
17.

What is another name for the elements in group 7?

a)

The Halogens

b)

The Oxides

c)

The Noble Gases

d)

The Alkali Metals

18.

Which of the following is NOT an alkali metal?

a)

Li

b)

K

c)

Cl

d)

Cs

19.

Gold is what kind of metal?

a)

alkaline earth

b)

alkali

c)

transition

d)

lanthanide

20.
What atom matches this electron configuration?
1s22s22p63s23p64s23d10
a)
Zinc
b)
Copper
c)
Nickel
d)
Germanium
21.

How many electrons can the d sublevel (the d orbitals) hold?

a)

14

b)

10

c)

2

d)

6

22.

Which area on the periodic table represents the electrons in the "d" sublevel (d orbitals)?

a)

representative elements

b)

columns 3-8

c)

rare earth elements

d)

transition elements

23.

Each orbital can hold how many electrons?

a)

5

b)

4

c)

8

d)

2

24.

What is incorrect about this orbital diagram?

a)

Both arrows in the 2p box should be pointing up

b)

There is nothing incorrect with this diagram

c)

In the 2p box there should only be 1 electron in the first 2p box and one in the 2nd 2p box pointing in the same direction.

d)

All the arrows should be pointing up.

25.
What is the abbreviated electron configuration for barium?
a)
[Xe] 6s2
b)
[Rn] 6s2
c)
[Ar] 4s2 3d10 4p5
d)
[He] 2s2 3p1
26.
The electron configuration of an atom is 1s22s22p6.  The number of electrons in the atom is 
a)
3
b)
6
c)
8
d)
10
27.
What atom matches this electron configuration?
1s22s22p63s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
28.
What is the electronic configuration of iron?
a)
1s22s22p63s23p64s23d6
b)
1s22s22p63s23p63d8
c)
1s22p63s23p64s23d6
d)
1s22s22p63s23p64s13d6
29.

What does the Pauli Exclusion Principle state?

a)

An orbital can only hold a maximum of 2 electrons, each with opposite spins

b)

An orbital can hold a minimum of 6 electrons, each with opposite spins

c)

An orbital can hold a maximum of 6 electrons, each with the same spin

d)

An orbital can hold a maximum of 2 electrons, each with the same spin

30.

Which orbital diagram violates Hund's Rule?

a)

A

b)

B

c)

C

d)

D

31.
Electrons occupy orbitals of lowest energy first is part of what electron configuration rule?
a)
Hund’s Rule
b)
Aufbau Principle
c)
Pauli Exclusion Principle

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