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CPA Chemistry Midterm Review

Total questions: 83

Worksheet time: 2hrs 54mins

Name
Class
Date
1.

Used the word "atomos" to decsribe the uncuttable (indivisible) atom.

a)

Democritus

b)

Thomson

c)

Bohr

d)

Dalton

2.

Proposed that electrons move around the nucleus in specific layers, or shells.

a)

Bohr

b)

Rutherford

c)

Chadwick

d)

Thomson

3.

This picture best represents ___________________ atomic model.

a)

Thomson's

b)

Dalton's

c)

Bohr's

d)

Chadwick's

4.

Rutherford and his students did experiments that showed

a)

quark

b)

nucleus

c)

proton

d)

electron

5.

What is a particle with one negative charge called?

a)

electron

b)

proton

c)

quark

d)

neutron

6.

Which one of these is Dalton's Model?

a)
b)
c)
d)
7.

Which model was created after the discovery of the nucleus?

a)

Dalton's

b)

Rutherford's

c)

Quantum Mechanical

d)

Plum Pudding

8.

Which model was created after the discovery of the electron cloud?

a)

Dalton's

b)

Rutherford's

c)

Quantum Mechanical

d)

Plum Pudding

9.

Who discovered electrons?

a)

Rutherford

b)

Bohr

c)

J.J. Thompson

d)

Democritus

10.

Which model was created after the discovery of electrons?

a)

Dalton's

b)

Rutherford's

c)

Quantum Mechanical Model

d)

Plum Pudding

11.

What is the correct order of scientists in order of their work related to the atomic theory from earliest to most recent?

a)

Neils Bohr, Ernest Rutherford, JJ Thomson, John Dalton, & Democritus

b)

JJ Thomson, John Dalton, Neils Bohr, Ernest Rutherford, & Democritus

c)

Democritus, John Dalton, JJ Thomson, Ernest Rutherford, and Neils Bohr

d)

John Dalton, Neils Bohr, JJ Thomson, Democritus, & Ernest Rutherford

12.
Ernest Rutherford discovered that the atom was mostly _________________ and has a _______________ charged nucleus.
a)
empty space, positively
b)
empty space, negatively
c)
full of protons, positively
d)
full of neutrons, negatively
13.

Where are the electrons located?

a)

o outside the nucleus

b)

o inside the nucleus

c)

o in the middle of the atom

d)

o in areas that contribute to the atom's mass

14.

Within Dalton's Atomic Theory, he had proposed...

a)

Atoms were the smallest particles that existed and could be divisible

b)

Atoms were the smallest particles that existed and were round

c)

Atoms were the smallest particles that existed and could not be divisible

15.

Protons are

a)

Negative

b)

Positive

c)

No charge

d)

Atomic Number

16.

Neutrons have

a)

Negative

b)

Positive

c)

No charge

d)

Atomic Number

17.

Electrons are are

a)

Negative

b)

Positive

c)

No charge

d)

Atomic Number

18.

In the nucleus you can find the

a)

Protons, neutrons and electrons

b)

Protons and neutrons

c)

Protons and electrons

d)

Neutrons

19.

All of the mass is located in the -

a)

Electron cloud

b)

APE

c)

MAN

d)

Nucleus

20.

An element has an atomic number of 9 and a mass of 19 amu. What is the number of protons this element has?

a)

9

b)

19

c)

10

d)

28

21.

An element has an atomic number of 9 and a mass of 19 amu. What is the number of electrons this element has?

a)

9

b)

19

c)

10

d)

28

22.

An element has an atomic number of 9 and a mass of 19 amu. What is the number of neutrons this element has?

a)

9

b)

19

c)

10

d)

28

23.

What is represented by the letter T?

a)

Nucleus

b)

Electron

c)

Proton

d)

Neutrons

24.

What is represented by the letter S?

a)

Nucleus

b)

Electron

c)

Proton

d)

Neutrons

25.

What is represented by the letter Q?

a)

Nucleus

b)

Electron

c)

Proton

d)

Neutrons

26.

What is represented by the letter R?

a)

Nucleus

b)

Electron

c)

Proton

d)

Neutrons

27.

The atomic number is the same as the number of

a)

Protons

b)

Neutrons

c)

Mass

d)

Atom

28.

What gives you the identity of an element?

a)

Mass

b)

Atomic number

c)

Protons

d)

Electrons

29.

An element has 3 electrons and a mass of 7. How many protons does this element have?

a)

3

b)

7

c)

4

d)

10

30.

How many protons does Boron, B have?

a)

5

b)

11

c)

6

31.

How many Neutrons does Hydrogen have?

a)

1

b)

0

32.

How many protons does an element with an atomic number of 32 and a mas of 73 have?

a)

32

b)

73

c)

41

33.

How many electrons does Lithium have if it has an atomic number of 3 and mass of 7?

a)

3

b)

7

c)

4

34.

An atom has 25 protons, 30 neutrons, and 25 electrons. What is the charge of the atom's nucleus?

a)

+25

b)

+30

c)

-25

d)

-30

35.

An atom of Chlorine, Cl, has an atomic number of 17 and a mass of 35. How many subatomic particles are INSIDE the nucleus

a)

17

b)

35

c)

18

36.

An atom of Chlorine, Cl, has an atomic number of 17 and a mass of 35. How many subatomic particles are OUTSIDE the nucleus

a)

17

b)

35

c)

18

37.

How many neutron are in the atom "K"?

a)

29

b)

19

c)

58

d)

20

38.

How many protons does this isotope of titanium have?

a)

22

b)

26

c)

48

d)

70

39.

How many electrons are in an atom that has an atomic number of 34, an atomic mass of 74 and a charge of -2?

a)

2

b)

34

c)

36

d)

40

40.

Write the hyphen notation for the isotope that has 39 protons and 50 neutrons.

a)

Yttrium-11

b)

Tin-39

c)

Tin-89

d)

Yttrium-89

41.

Chromium has four naturally occurring isotopes (chromium-50, chromium-52, chromium-53, and chromium-54). What is the average atomic mass of Chromium?

a)

4

b)

51.996

c)

52.25

d)

Not enough information was given.

42.

An element has three isotopes. Given the abundances and relative masses, calculate the average atomic mass and determine (from the periodic table) which element it is.


Abundances | Relative masses

0.005% | 234.04 amu

0.720% | 235.04 amu

99.275% | 238.05 amu

a)

Uranium (#92, Atomic Mass: 238.03 amu)

b)

Fluorine (#9, Atomic Mass: 19.00 amu)

c)

Mercury (#89, Atomic Mass: 200.59 amu)

d)

Polonium (#84 209 amu)

43.
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
44.
What is the name of the pictured isotope?
a)
Carbon-12
b)
Carbon-13
c)
Carbon-14
d)
Carbon-15
45.
What is the Law of Conservation of mass?
a)
Mass is created in a chemical reaction
b)
Mass is created in a physical change
c)
New chemicals formed from a chemical reaction have a larger overall mass than the original reactants
d)
Mass is never created or destroyed
46.
In a reaction A + B ----> C,  reactant A has 5g and product  C has 9g. How many grams does reactant B should have? 
a)
4g
b)
5g
c)
9g
d)
14g
47.
If a reaction starts with a total 75g of reactants it should produce 
a)
a total of 40g of products
b)
a total of 75g of products
c)
a total of 180 g of products
d)
None of the above
48.
In the reaction AB-----> A + B reactant AB has 12g and product B has 5g. How many grams should product A have?
a)
17g
b)
2g
c)
7g
d)
None of the above
49.
24 g of magnesium reacts with 38 g of fluorine to produce _____ g magnesium fluoride
a)
62 
b)
38
c)
24
d)
14
50.

Sodium and chlorine combine to form sodium chloride, or table salt. Sodium and chlorine are:

a)

Producers

b)

Products

c)

Reactionaries

d)

Reactants

51.

4 grams of hydrogen and 32 grams of oxygen will combine to form:

a)

36 grams of water

b)

28 grams of hydroxide

c)

32 grams of oxygen

d)

36 grams of deuterium

52.

How many electrons can the d sublevel hold?

a)
8
b)
10
c)
2
d)
4
53.

What is the maximum number of electrons that an s orbital can have?

a)

1 electron

b)

2 electrons

c)

3 electrons

d)

4 electrons

54.

How many electrons can the p sublevel hold?

a)
8
b)

6

c)
2
d)
4
55.

What is the maximum number of electrons that an f orbital can have?

a)

11 electrons

b)

14 electrons

c)

13 electrons

d)

12 electrons

56.

What electron configuration matches an oxygen atom?

a)

1s22s22p63s2, 3p64s23d104p5

b)

1s22s22p4

c)

1s22s22p6

d)

1s22s22p63s23p64s23d1

57.

Identify the Electron Configuration for Aluminum (Al)

a)

1s2 2s2 2p6 3s2 3p1

b)

1s2 2s2 2p6 3s2 3p3

c)

1s2 2s2 2p6 3s2 4p1

58.

What element has the electron configuration 

1s22s22p31s^22s^22p^3  

a)

Nitrogen

b)

Oxygen

c)

Magnessium

d)

Carbon

59.
This orbital diagram represents:  
a)
C
b)
B
c)
N
d)
O
60.

Which orbital is displayed correctly?

a)

A

b)

B

c)

C

d)

D

61.
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 there should only be 1 orbital in the first 2p box and one in the 2nd 2p box
d)
All the arrows should be pointing up.
62.

Which element has electronic configuration of 1s2 2s2 2p6 3s2 3p2

a)

C

b)

Si

c)

Mg

d)

Be

63.
How many electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
4
64.
What is the shorthand electron configuration for Sulfur atom?
a)
[Ar] 3p4
b)
[He] 3s23p4
c)
[Ne] 3s23p4
d)
[Na] 3s23p3
65.
Electron arrangement that uses arrows
a)
Electron configuration
b)
Shorthand configuration
c)
Lewis dot structure
d)
Orbital diagram
66.

What is the shape of a p orbital?

a)

sphere

b)

it's just too complex to think about it

c)

dumbbell

d)

I don't know this stuff.

67.

What is the shape of an s orbital?

a)

sphere

b)

dumbbell

c)

double dumbbell

d)

TOO COMPLEX TO KNOW IT.

68.
Which element is depicted from this atomic orbital diagram?
a)
Carbon
b)
Nitrogen
c)
Oxygen
d)
Phosphorus
69.
There are 4 different types of subshells s,p,d,f
a)
true
b)
false
70.

The principle quantum number, n, represents the:

a)

spin value

b)

suborbital value

c)

energy level

d)

magnetic value

71.

The proper pair of the l value with the orbital shape.

a)

0; f

b)

3; p

c)

1; s

d)

2; d

72.

With each higher energy level, the electrons are

a)

lower in energy

b)

more stable

c)

weaker

d)

farther from the nucleus

73.

Which of the following is NOT a possible pair of quantum numbers?

a)

2p

b)

2d

c)

4p

d)

4f

74.

n=4, l=3?

a)

4f

b)

4d

c)

3s

d)

3p

75.

orbital sublevels, or l, implies:

a)

orbital color

b)

electron spin

c)

orbital shape

d)

energy level

76.

Which set of Quantum numbers is not allowed

a)

(3,1,1,-1/2)

b)

(2,1,-2,+1/2)

c)

(4,2,-1,-1/2)

77.

If n = 2, what are the allowed values of l? Tick all that apply:

a)

0

b)

1

c)

2

d)

3

78.

Chernobyl is a town located in present day Ukraine, formerly USSR. On Saturday, April 26th, 1986 at exactly 1:23 am, one of the reactors at the Chernobyl nuclear power plant exploded. What caused the reactor to explode?

a)

sabotage by an enemy of the USSR

b)

an experiment gone wrong

c)

to this day, the reason is unknown

d)

earthquakes struck the plant

79.

What was the number of the reactor that melted down?

a)

1

b)

2

c)

3

d)

4

80.

What year did the Chernobyl Disaster occur in?

a)

1991

b)

2019

c)

1986

d)

44 BCE

81.

The Chernobyl plant provided power for the city of

a)

London

b)

Pripyat

c)

Moscow

d)

Washington DC

82.

What did the meltdown at Chernobyl release into the air?

a)

Radioactive dust

b)

Bees!

c)

The Hounds

d)

The Kracken

83.
There are lots of people who still live in the area of the infected zone
a)
True
b)
False
c)
Not given

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