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Unit 2 atomic structure review

Total questions: 81

Worksheet time: 54mins

Name
Class
Date
1.

What are the subatomic particles?

a)

Protons, Electrons, Neutrons

b)

Molecules, and atoms

c)

Electrons, Protons, Nucleus

d)

Nucleus, and Electrons

2.

What is this subatomic particle that has positive charge?

a)

Electron

b)

Neutron

c)

Proton

d)

Megatron

3.

What is the smallest unit of matter? It is composed of protons and neutrons, held together in the nucleus, and electrons around the nucleus in different electron orbitals, which form an electron cloud.

a)

cell

b)

nucleus

c)

atom

d)

electron

4.

What mass does a neutron have?

a)

1 amu

b)

0 amu

c)

-1 amu

d)

+2 amu

5.
Complete the missing label on the diagram.
a)
Neutron
b)
Centre
c)
Nucleus
d)
Sub atomic particle
6.
What subatomic particles would you find in the nucleus of an atom?
a)
Protons only
b)
Protons and Neutrons
c)
Neutrons and Electrons
d)
Protons and Electrons 
7.

The electron is not included in the calculations for the atomic mass because

a)

It has negative charge

b)

It is located in the outer energy levels of the atom

c)

Its mass is basically zero

d)

It attracts neutral particles

8.

An atom has 9 protons, 10 neutrons, and 9 electrons.

What is the charge on this atom?

a)

-1

b)

0

c)

+1

d)

19

e)

18

9.

An atom has 8 protons, 8 neutrons, and 10 electrons.

What is the mass of this atom?

a)

8

b)

16

c)

18

d)

-2

10.
Sodium has an atomic number of 11, how many protons does this atom have?
a)
22
b)
11
c)
12
d)
2
11.
A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass
a)
Electron Shells
b)
Orbitals
c)
Electron Cloud
d)
Nucleus
12.
What number indicates an electron?
a)
1
b)
2
c)
3
d)
4
13.
What number indicates the nucleus?
a)
1
b)
2
c)
3
d)
4
14.
The mass of this particle is so small that it is not counted.
a)
proton
b)
electron
c)
neutron
d)
quark
15.
True or False - Protons and Neutrons have about the same mass.
a)
True - They have about the same mass
b)
False - They do not have about the same mass
16.

________________ have a positive charge, ___________________ have NO charge, and _____________________ have a negative charge.

a)

Protons, Electrons, Neutrons

b)

Neutrons, Electrons, Protons

c)

Protons, Neutrons, Electrons

d)

Electrons, Neutrons, Protons

17.

What is the atomic mass for nickel?

a)

58.693

b)

28

c)

30.693

d)

86.693

18.

What is the atomic number for boron?

a)

15.811

b)

5

c)

5.811

d)

10.811

19.

How many neutrons are in an atom of oxygen?

a)

23.999

b)

8

c)

7.999

d)

30.999

20.

If the atomic mass is not given, how do we calculate it?

a)

(protons) + (electrons)

b)

(atomic mass) - (atomic number)

c)

(protons) - (neutrons)

d)

(protons) + (neutrons)

21.

What is the atomic number for mercury?

a)

200.59

b)

120.59

c)

280.59

d)

80

22.

How many protons are in an atom of manganese?

a)

50

b)

54.938

c)

25

d)

109.876

23.

What is the atomic mass for zinc?

a)

95.38

b)

65.38

c)

30

d)

35.38

24.

How many electrons are in an atom of strontium?

a)

125.62

b)

87.62

c)

49.62

d)

38

25.

How do we calculate the number of neutrons in an atom?

a)

(atomic number) - (atomic mass)

b)

(atomic mass) - (atomic number)

c)

(atomic mass) + (atomic number)

d)

atomic mass only

26.

How many neutrons are in an atom of zirconium?

a)

51.224

b)

131.224

c)

40

d)

80

27.
What is the atomic number?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
28.
What is the mass number defined as?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
29.
What is the atomic number of this atom?
a)
1
b)
3
c)
4
d)
7
30.

What is the mass number of this atom?

a)

1

b)

3

c)

4

d)

7

31.

Atoms of the same element which have a different number of neutrons are called _________________.

a)

ions

b)

isotopes

c)

quarks

d)

molecules

32.

How many neutrons does C-14 contain? (tap to enlarge the image)

a)

6

b)

7

c)

14

d)

8

33.

How many neutrons does an atom of the isotope Neon-22 have? (tap to enlarge the image)

a)

12

b)

10

c)

22

d)

20

34.

ALL atoms of the same element have:

a)

same number of proton

b)

same number of nucleon

c)

different number of neutron

d)

different number of electron

35.
What do these isotopes of carbon all have in common?
a)
neutrons & mass number
b)
atomic number and neutrons
c)
atomic number and electrons
d)
protons, atomic number, and mass number
36.
What quantities vary between isotopes of an element?
a)
protons, electrons, and atomic mass
b)
protons, electrons, and atomic number
c)
neutrons and electrons
d)
neutrons and atomic mass
37.
If X is the symbol for an element, which of the following two symbols represent    isotopes of the same element?     I. 7735X  II. 7733X  III. 8137X  IV. 8135 X
a)
I and II
b)
III and IV
c)
I and IV
d)
I and III
38.
How many neutrons does the isotope below have?     89 36Kr
a)
53
b)
36
c)
89
d)
125
39.
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
40.

If an atom has 12 neutrons and 11 protons, what is its atomic mass?

(a)  

41.
In a correctly written symbol what would be located in the "A" position?
a)
number of neutrons
b)
atomic number
c)
number of electrons 
d)
mass number
42.

What charge does an atom have when it GAINS electrons?

a)

Positive

b)

Negative

c)

Neutral

43.

What is a representation of an ion?

a)

Li

b)

Na-22

c)

O-2

44.

What is the mass number of bromine?

a)

35

b)

45

c)

80

d)

79.904

45.

How many neutrons does this bromine atom have?

a)

35

b)

45

c)

80

46.

What type of atom is this?

a)

Neutral atom

b)

Cation

c)

Anion

d)

Isotope

47.

What two particles determine the mass number?

a)

Protons and electrons

b)

Electrons and neutrons

c)

Protons and neutrons

48.

What type of atom is this?

a)

Normal Atom

b)

Cation

c)

Anion

d)

Isotope

49.

What is the mass number of this Neon atom?

a)

10

b)

11

c)

21

d)

20

50.

What does it change in an ion?

a)

The number of electrons

b)

The number of protons

c)

The number of neutrons

51.

How many neutrons does this Neon atom have?

a)

21

b)

11

c)

10

d)

12

52.

What does it happen to this atom?

a)

It LOSES electrons

b)

It GAINS electrons

c)

It GAINS protons

d)

It LOSES protons

53.

What is the atomic number of this element?

a)

12

b)

24

c)

23

54.

What type of atom is element C?

a)

Normal atom

b)

Ion

c)

Isotope

55.

What is the mass number of this element?

a)

12

b)

24

c)

23

d)

11

56.
Two atoms of different elements will definitely have different numbers_____
a)
Nuclei
b)
Protons
c)
Neutrons
d)
Electrons
57.
An ion forms when an atom gains or loses
a)
Protons
b)
Neutrons
c)
Electrons
58.
A neutral atom would become an ion that has a charge of 2+ by 
a)
Losing two protons
b)
Losing two neutrons
c)
Losing two electrons
59.
Isotopes are atoms that have different
a)
Mass numbers
b)
Element names
c)
Atomic Numbers
60.
A positively charged ion is formed when
a)
A neutron is lost
b)
An electron is lost
c)
A neutron is gained
d)
An electron is gained
61.
Two atoms that have different numbers of protons are 
a)
Different ions
b)
Different isotopes
c)
Different elements
62.
An ion that has a negative charge is formed when an atom 
a)
Loses neutrons
b)
Loses electrons
c)
Gains neutrons
d)
Gains electrons
63.
What information would allow you to determine whether two atoms are of the same or different elements
a)
The charge on each atom
b)
The number of neutrons each has
c)
The number of protons in their nuclei
d)
The location of the electrons in their electron clouds
64.
Is the element shown in this image an ion, isotope or normal atom?
a)
atom
b)
isotope
c)
cation (+ ion)
d)
anion (- ion)
65.
The atomic mass is equal to _.
a)
the number of protons only
b)
the number of neutrons only
c)
the total number of protons and neutrons
d)
the number of protons, neutrons, and electrons.
66.

An atom that has gained or lost electrons in an attempt to become stable/bond with another atom.

a)

Normal/Neutral Atom

b)

Ion

c)

Isotope

67.

An atom with the same number of protons and electrons (no charge) and the expected atomic mass or number of neutrons from the periodic table.

a)

Neutral/Normal Atom

b)

Ion

c)

Isotope

68.

A negatively charged ion that has gained electrons to satisfy the octet rule (metals do this)

a)

Anion

b)

Cation

c)

Neutral Atom

d)

Isotope

69.

A positively charged ion that has lost electrons to satisfy the octet rule (non-metals do this)

a)

Anion

b)

Cation

c)

Neutral Atom

d)

Isotope

70.

Atoms of the same element that have different mass than expected because they have a different number of neutrons.

a)

Neutral Atom

b)

Ion

c)

Isotope

d)

Cation

71.

If an ion has a positive charge you would __________ the charge number from the number of protons to figure out how many electrons there are.

a)

subtract

b)

add

c)

multiply

d)

divide

72.

If an ion has a negative charge you would __________ the charge number to the number of protons to figure out how many electrons there are.

a)

Add

b)

Subtract

c)

Divide

d)

Multiply

73.

If an atom has a charge of +3 and an atomic number of 5 it should have _______ electrons.

a)

1

b)

2

c)

3

d)

4

74.

Which two notations represent isotopes of the same element?

a)
b)
c)
d)
75.

Two atoms that are different isotopes of the same element have

a)

the same number of protons and same number of neutrons

b)

the same number of protons but a different number of neutrons

c)

a different number of protons but the same number of neutrons

d)

a different number of protons and a different number of neutrons

76.

the mass of an electron is

a)

equal to the mass of a proton

b)

equal to the mass of a neutron

c)

greater than the mass of a proton

d)

less than the mass of a neutron

77.

Which notations represent atoms that have the same number of protons but a different number of neutrons?

a)

H-2 and He-3

b)

S-32 and S-32

c)

Cl-35 and Cl-37

d)

Ga-70 and Ge-73

78.

Atoms are neutral because the number of

a)

protons equals the number of neutrons

b)

protons equals the numbers of electrons

c)

neutrons is greater than the number of protons

d)

neutrons is greater than the number of electrons

79.

What is the total number of neutrons in K-42

a)

19

b)

20

c)

23

d)

42

80.

Which atom has the same number of neutrons as the isotope above? 

a)
b)
c)
d)
81.

The nucleus is held together by the ___________________________force.

a)

The Strong Nuclear Force

b)

The Weak Nuclear Force

c)

Electromagnetism

d)

Gravity

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