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Atomic Structure

Total questions: 55

Worksheet time: 51mins

Name
Class
Date
1.

Subatomic particles with a negative charge

a)

Electrons

b)

Neutrons

c)

Protons

d)

Quarks

2.
Most of the volume an atom is made of this
a)
the nucleus
b)
the protons
c)
the neutrons
d)
empty space
3.
The atomic number of an element that has 9 protons, 9 electrons, and 10 neutrons is _____.
a)
9
b)
10
c)
19
d)
28
4.
Which subatomic particle is found outside of the nucleus?
a)
Electron
b)
Proton
c)
Neutron
d)
Quark
5.
What is the nucleus? 
a)
The center (middle) of the atom
b)
The outside electron cloud
c)
The area inside the electron charge
d)
The positive or negative charge of the atom 
6.
What is an atom? 
a)
The smallest particle (electron)
b)
The smallest proton in a nulceus
c)
The largest particle outside the nucleus
d)
The basic unit of matter (elements) 
7.
What is the mass 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
8.
What is the atomic number of this atom?
a)
1
b)
3
c)
4
d)
7
9.

Neutrons have a _____________charge.

a)

positive

b)

negative

c)

neutral

10.

Which is NOT part of an atom?

a)

protons

b)

neutrons

c)

neurons

d)

electrons

11.
Which subatomic particle has a positive (+) charge?
a)
Neutron
b)
Proton
c)
Electron
12.
What is true about an atom?
a)
Most of the space in an atom is taken up by the nucleus
b)
Atoms are mostly empty space
c)
Atoms have no mass
d)
Electrons have much more mass that protons or neutrons.
13.

Which two subatomic particles are in the nucleus?

a)

Protons and Neutrons

b)

Protons and Electrons

c)

Neutrons and Electrons

14.

what is the mass of this atom

a)

hydrogen

b)

nitrogen

c)

carbon

d)

oxygen

15.

_________________ determine the identity of an atom.

a)

protons

b)

neutrons

c)

electrons

d)

quarks

16.
Most of the mass in an atom is made up of _____________________?
a)
protons and electrons
b)
protons and neutrons
c)
neutrons and electrons
d)
electrons and quarks
17.
What is the number of protons?
a)
4
b)
5
c)
9
d)
13
18.

who did the discovery of neutrons?

a)

James Chadwick

b)

Neil Bohr

c)

John Dalton

d)

J.J. Thomson

19.

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

20.
What scientist is best known for his gold foil experiment?
a)
J.J. Tomson
b)
Ernest Rutherford
c)
John Dalton
d)
Democritus
21.

What is a subatomic particle with a positive charge that is in the nucleus of an atom?

a)

neutron

b)

proton

c)

electron

d)

valence electron

22.

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

23.

What is a subatomic particle without an electric charge, located in the nucleus of an atom?

a)

neutron

b)

proton

c)

electron

d)

valence electron

24.

What is a subatomic particle with a negative charge? It is found in the electron cloud surrounding the nucleus.

a)

neutron

b)

proton

c)

electron

d)

electron cloud

25.

If the atomic number of an element is 17 and mass number is 35 then the number of neutrons are

a)

35

b)

17

c)

18

d)

52

26.

The number of electrons in an atom is equal to number of

a)

nucleons in a neutral atom

b)

neutrons in a neutral atom

c)

protons in a neutral atom

d)

none of the above

27.

The charged particles are called

a)

Molecules

b)

Atom

c)

Ions

d)

None of above

28.

No: of protons in the nucleus of an atom is called

a)

Atomic Number

b)

Atomic mass

c)

Isotope

d)

Electronic configuration

29.
The nucleus of an atom is made of
a)
electrons and protons
b)
electrons and neutrons
c)
protons and neutrons
d)
empty space
30.

What are valence electrons?

a)

The total number of electrons in an atom

b)

The number of electrons in the outermost shell

c)

The number of electrons in the second shell

d)

The number of protons in the outermost shell

31.

What is the electronic configuration of Lithium (z = 3)?

a)

2.8.8

b)

2.2.2

c)

2.8.5

d)

2.1

32.

The electronic configuration of Cl (z = 17) is

a)

2,8,8,1

b)

2,8,6

c)

2,8,8

d)

2,8,7

33.

Which of the following is the electronic Configuration of Sodium (z = 11)

a)

2,8

b)

2,8,1

c)

2,1,8

d)

8,1,2

34.

Which if the following is the correct arrangement of electrons in different shells for an element with atomic number 17 ?

a)

2,8,7

b)

8,8,1

c)

2,8,1,6

d)

2,8,2,5

35.

In which group and period is oxygen (z = 8)?

a)

Group 6 and period 2

b)

Group 2 and period 6

c)

Group 2 and period 4

d)

Group 4 and period 2

36.

In which group and period is carbon (z = 6)?

a)

Group 6 and period 2

b)

Group 2 and period 6

c)

Group 2 and period 4

d)

Group 4 and period 2

37.

In which group and period is magnesium (z = 12)?

a)

Group 6 and period 2

b)

Group 2 and period 6

c)

Group 2 and period 3

d)

Group 3 and period 2

38.

What is the valence electrons of calcium (z = 20)?

a)

1

b)

2

c)

3

d)

4

39.

The number of proton, electron and neutron in 15P31 are...

a)

16, 15, dan 16

b)

15, 16, dan 16

c)

15, 15, dan 16

d)

15, 16, dan 15

e)

16, 16, dan 15

40.

The number of proton, electron and neutron in potassium are...

a)

19, 19, dan 20

b)

20, 19, dan 20

c)

19, 39, dan 20

d)

20, 19, dan 39

e)

19, 20, dan 19

41.

Subatomic particles with a negative charge

a)

Electrons

b)

Neutrons

c)

Protons

d)

Quarks

42.
Subatomic particles with a positive charge
a)
neutrons
b)
atomic mass
c)
protons
d)
isotopes
43.
Subatomic particles that are neutral in charge
a)
Neutrons
b)
Protons
c)
Nucleus 
d)
Electrons
44.
The nucleus of an atom is made of
a)
electrons and protons
b)
electrons and neutrons
c)
protons and neutrons
d)
empty space
45.
Outside the nucleus of an atom are these
a)
protons
b)
neutrons
c)
quarks
d)
electrons
46.
The mass of this particle is so small that it is not counted.
a)
proton
b)
electron
c)
neutron
d)
quark
47.
The term "neutral" means
a)
having only a little bit of charge
b)
having a positive charge
c)
having a negative charge
d)
having no charge at all
48.

The atomic mass of an atom is equal to

a)

number of protons plus number of neutrons

b)

number of protons plus number of electrons

c)

number of electrons plus the number of neutrons

49.

What is the atomic number?

a)

35

b)

18

c)

17

d)

52

50.

How many protons and electrons does this element have?

a)

35

b)

18

c)

17

d)

52

51.

How many neutrons does calcium have?

a)

20

b)

40

c)

60

d)

0

52.

What is the atomic mass of Neon?

a)

10

b)

20

c)

30

53.

What is the atomic mass of Arsenic?

a)

33

b)

107

c)

75

54.
How many electron shells/levels does this atom have?
a)
1
b)
2
c)
3
d)
4
55.
How many neutrons does a sodium atom have? (Use the image to help you)
a)
23
b)
11
c)
12
d)
34

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