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Structure of the Atom

Total questions: 60

Worksheet time: 57mins

Name
Class
Date
1.
How many neutrons would Fe-56 have?
a)
56
b)
26
c)
30
d)
33
2.
How many protons does P-30 have?
a)
30
b)
16
c)
12
d)
15
3.
What element has 42 protons?
a)
Ca
b)
Mo
c)
Zr
d)
Po
4.
How many neutrons would V-49 have?
a)
26
b)
49
c)
23
d)
50.94
5.
How many protons does Pb-209 have?
a)
127
b)
209
c)
82
d)
291
6.
Which of the following could have 14 neutrons?
a)
Al-27
b)
Si-29
c)
Mg-25
d)
Na-22
7.
Which of the following could have 82 neutrons?
a)
W-182
b)
Ta-181
c)
Cs-132
d)
Ba-138
8.
What is the mass number of an atom of gold with 117 neutrons?
a)
117
b)
196
c)
196.97
d)
197
9.
How many neutrons does the isotope below have?     89 36Kr
a)
53
b)
36
c)
89
d)
125
10.
An atom is electrically neutral when
a)
protons and neutrons are the same
b)
protons and electrons are the same
c)
neutrons and electrons are the same
d)
neutrons balance the protons and electrons
11.
Two isotopes of carbon are carbon-12 and carbon-14.  These isotopes differ from one another by two protons.
a)
true
b)
false
12.
What is the electron configuration of sodium?
a)
2.8
b)
2.8.2
c)
2.8.1
d)
11
13.
What is the electron configuration of calcium?
a)
2.8.8.2
b)
2.8.10
c)
20
d)
2.18.2
14.
Which element has an electron configuration of 2.5?
a)
Oxygen
b)
Nitrogen
c)
Phosphorus
d)
Carbon
15.
Which element has an electron configuration of 2.8.8?
a)
Lead
b)
Flourine
c)
Neon
d)
Argon
16.
What is the electron configuration of Aluminium?
a)
2.8.3
b)
2.11
c)
13
d)
2.8.2
17.
How many electrons can the d sublevel hold?
a)
14
b)
10
c)
2
d)
6
18.
What atom matches this electron configuration?
1s22s22p63s23p64s23d10
a)
Zinc
b)
Copper
c)
Nickel
d)
Germanium
19.
What electron configuration matches an oxygen atom?
a)
1s22s22p63s2, 3p64s23d104p5
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p64s23d1
20.
The electron configuration of an atom is 1s22s22p6.  The number of electrons in the atom is 
a)
3
b)
6
c)
8
d)
10
21.
Which electron configuration belongs to Chlorine (Cl)?
a)
1s2 2s2 2p6 3s2 3p5
b)
1s2 2s2 2p6 3s2 3p6
c)
1s2 2s2 2p6 3s2 3p7
22.
How many electrons can the s sublevel hold?
a)
14
b)
10
c)
2
d)
6
23.
What atom matches this electron configuration?
1s22s22p63s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
24.

Choose the correct shortcut configuration for iodine.

a)

[Ar]4s24d104p5

b)

[Kr]5s24d105p5

c)

[Xe]5s25d105p5

d)

none of the above

25.

Each row on the periodic table represents:

a)

an energy level

b)

a sublevel

c)

an electron

d)

an orbital

26.

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

a)

representative elements

b)

columns 3-8

c)

rare earth elements

d)

transition elements

27.

Energy levels are denoted by:

a)

letters

b)

numbers

c)

a combination of letters and numbers

d)

subscripts

28.

Which of the following is not a correct designation for a sublevel?

a)

zz

b)

p

c)

d

d)

f

29.
Which element is pictured?
a)
neon
b)
fluorine
c)
magnesium
d)
argon
30.
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
31.
For which of the following problems would a scientist most likely use carbon-14? 
a)
to calculate the age of the Earth's oldest rocks
b)
to calculate the age of a piece of bone 
c)
to identify the elements that make up a rock 
d)
to identify the elements that make up a bone
32.
Radioactive tracers are useful in ____.
a)
calculating the ages of fossils 
b)
fueling nuclear reactions 
c)
determining medical problems 
d)
treating brain tumors 
33.

Radioactivity can be harmful and cause disease because it affects _________.

a)

air

b)

water

c)

cells

d)

blood

34.

Suggest way that a scientist can protect themselves against exposure when handling radioactive sources.

a)

Storing sources in a lead–lined box using tongs

b)

Goggles and gloves

c)

Tie hair back

35.

How is radiation used to treat cancer?

a)

Radiation is used to stimulate the growth of cancer cells

b)

Cancer cells are bombarded with radiation and become inactive

c)

Cancer cells are burned up by radiation

d)

Radiation melts cancer cells

36.
Where does radioactivity have application in our lives?
a)
Medicine
b)
Energy (electricity)
c)
Agriculture
d)
All of the above
37.

Radioactive dating uses the half-life of different radioactive materials to provide information about the _______ of a sample.

a)

purity

b)

age

c)

radioactivity

d)

nuclear stability

38.

What is a use of radioactive materials in medicine?

a)

oxygen masks

b)

antibiotics

c)

tracers

d)

heat monitors

39.

Which part of the atomic theory did Niels Bohr prove?

a)

there are electrons

b)

there is a nucleus

c)

electrons are in energy levels

d)

gold foil experiment

40.

Which part of the atomic theory did JJ Thomson prove?

a)

there are electrons

b)

electrons are in energy levels

c)

there is a nucleus

d)

cathode ray tube

41.

What experiment did JJ Thomson use?

a)

gold foil experiment

b)

cathode ray tube experiment

42.

John Dalton wrote postulates to make the idea of the atom useful. Which postulate below was proven wrong?

a)

All elements are made up of tiny indivisible particles called atoms.

b)

The atoms of one element are different from the atoms of another element.

c)

Atoms of different elements chemically combine to form chemical compounds.

d)

During chemical reactions, atoms are rearranged.

43.

JJ Thomson came up with which model for the atom?

a)

planetary model

b)

electron cloud model

c)

plum pudding model

d)

nuclear model

44.

Which statement is incorrect?

a)

The nucleus is very dense.

b)

The nucleus contains protons and neutrons.

c)

The nucleus is positively charged.

d)

The nucleus is involved in chemical reactions.

45.

The number of protons is equal to the number of electrons for an atom. This means an atom is-

a)

electrically neutral

b)

electrically positive

c)

electrically negative

46.

What determines chemical reactivity?

a)

protons

b)

neutrons

c)

electrons

d)

isotopes

47.

What determines the identity of the atom?

a)

protons

b)

neutrons

c)

electrons

d)

isotopes

48.

Which subatomic particle has a neutral charge?

a)

protons

b)

neutrons

c)

electrons

d)

isotope

49.

What are atoms with the same number of protons but different numbers of neutrons?

a)

electrons

b)

protons

c)

neutrons

d)

isotopes

50.

After Rutherford discovered the nucleus, which model is believed to be true?

a)

protons, neutrons, and electrons are evenly distributed

b)

the nucleus is made of protons, neutrons, and electrons

c)

the nucleus is made of protons and electrons

d)

the model is mostly empty space with a central nucleus

51.
Electron cloud is based on
a)
Quantum Mechanics
b)
Gold Foil Experiment
c)
Matter is made up of small particles called atoms
d)
Nuclear Theory
52.
James Chadwick discovered the ________.
a)
proton
b)
neutron
c)
electron
d)
nucleus
53.
Where electrons are likely to be found as they travel around the nucleus
a)
Nucleus
b)
Electron Cloud
c)
Within a Proton
d)
Within a Neutron
54.
Atoms are made up of three basic parts, which are -
a)
Protons, neutrons, electrons
b)
neutrinos, protons, neutrons
c)
quarks, protons, electrons
d)
electrons, neutrons, and quarks
55.
Which is the correct sequence of the scientists who made major changes in the model of the atom?
1-JJ Thomson
2-Erwin Schrodinger
3-John Dalton
4-Niels Bohr
5-Ernest Rutherford
a)
2, 1, 4, 3, 5
b)
3, 1, 5, 4, 2
c)
5, 3, 2, 1, 4
d)
4, 3, 2, 1, 5
56.

All of the following are true about Democritus' atomic theory EXCEPT ______.

a)

Everything is made up of atomos and the void.

b)

Atoms vary in size and shape.

c)

Atoms are composed of subatomic particles.

d)

Atoms are infinite in number.

57.

What will happen when an electron jumps from a higher energy level to a lower energy level?

a)

Nothing will happen.

b)

Energy is absorbed.

c)

Energy is emitted in the form of light.

d)

The electron will leave the ground state.

58.

Which among the following is TRUE about Schrodinger's atomic theory?

a)

Energy is concentrated on the electrons.

b)

Electrons can act as particles and waves.

c)

The electrons' location can be determined by merely looking at it.

d)

Electrons are infinite in number.

59.

Order the atomic models below from the oldest to the most recent.

a)

2, 1, 3, and 4

b)

1, 2, 4, and 3

c)

3, 2, 4, and 1

d)

3, 1, 2, and 4

60.
Which statement is true according to current thinking?
a)
An atom is mostly empty space.
b)
An atom is a collection of particles, so tightly packed that there is little empty space.
c)
The atomic nucleus is very mobile, and moves around inside a cloud of electrons.
d)
The size of atoms changes over time, pulsating from large to small to large again.

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