wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Physical Science- Atoms

Total questions: 70

Worksheet time: 42mins

Name
Class
Date
1.
The number of protons is always the same as the:
a)
Neutrons
b)
Atomic Mass
c)
Element
d)
Atomic Number
2.
(Choose 2) Atomic mass tells the number of _____________ + _______________.
a)
Electrons
b)
Neutrons
c)
Nucleus
d)
Protons
3.
This is a positively charged subatomic particles that a mass of 1 amu and is found in the nucleus of an atom
a)
Protons
b)
Nucleus
c)
Neutrons
d)
Isotope
4.
This is a negatively charged subatomic particle that orbit the nucleus and has no mass.
a)
Atomic Mass
b)
Element
c)
Valence Electrons
d)
Electrons
5.
These particles are found in the nucleus and have no charge (neutral).
a)
Electrons
b)
Atomic Mass
c)
Neutrons
d)
Protons
6.
Atoms of the same element that have different numbers of neutrons
a)
Mass number
b)
Atomic mass unit (amu)
c)
Neutrons
d)
Isotope
7.
A pure substance made of only one kind of atom
a)
Protons
b)
Element
c)
Mass number
d)
Nucleus
8.
The unit for mass of subatomic particles
a)
Atomic mass unit (amu)
b)
Millimeters
c)
Kilograms (kg)
d)
Centimeters
9.
This is found at the center of an atom and contains protons and neutrons.
a)
Orbitals
b)
Electrons
c)
Valence Electrons
d)
Nucleus
10.
Electrons on the outermost energy level of an atom
a)
Valence Electrons
b)
Protons
c)
Electrons
d)
Isotope
11.
(Rounded Atomic Mass) The sum of the number of neutrons and protons in an atomic nucleus
a)
Electrons
b)
Mass number
c)
Atomic mass unit (amu)
d)
Atomic Number
12.
Who discovered the neutron?
a)
Chadwick
b)
Democritus
c)
Bohr
d)
Dalton
13.
Who coined the term "atomos" which means indivisible?
a)
Chadwick
b)
Democritus
c)
Bohr
d)
Dalton
14.
Who discovered the electron and made the Plum Pudding Model?
a)
Thomson
b)
Democritus
c)
Bohr
d)
Dalton
15.
Who revised the Atomic Theory into the Billiard Ball Theory in 1803?
a)
Chadwick
b)
Democritus
c)
Bohr
d)
Dalton
16.
Who said that atoms don't exist, but only 4 elements?
a)
Aristotle
b)
Bohr
c)
Democritus
d)
Dalton
17.
Who completed the Gold Foil experiment to discover a nucleus that was positively charged (had protons)?
a)
Bohr
b)
Thomson
c)
Schrodinger
d)
Rutherford
18.
Who found that electrons reside in energy levels/ orbital outside the nucleus?
a)
Dalton
b)
Bohr
c)
Thomson
d)
Schrodinger
19.
Who said that electrons exist in a cloud but not in energy orbitals?
a)
Schrodinger
b)
Thomson
c)
Bohr
d)
Rutherford
20.
Who created this atomic model?
a)
Bohr
b)
Schrodinger
c)
Dalton
d)
Democritus
21.

Who first invented the model shown?

a)

Democritus

b)

Aristotle

c)

Dalton

d)

Thomson

22.

Which subatomic particle is the smallest and has no mass?

a)

Proton

b)

Electron

c)

Nucleus

d)

Neutron

23.

What is the charge of a neutron?

a)

Neutral

b)

Positive

c)

Negative

d)

Other

24.

What is the charge of a proton?

a)

Neutral

b)

Negative

c)

Positive

d)

Other

25.

What is the charge of an electron?

a)

Neutral

b)

Negative

c)

Positive

d)

Other

26.

Where do electrons exist in an atom?

a)

Nucleus

b)

A cloud outside the nucleus

c)

An energy shell outside the nucelus

d)

Both in a cloud and shell outside the nucleus

27.

Most of an atom is empty space

a)

True

b)

False

28.

The number of protons in an atom can change

a)

True

b)

False

29.

Electrons orbit around the center of an atom.

a)

True

b)

False

30.

What is the atomic number of Boron?

(a)  

31.

What is the atomic mass of carbon?

(a)  

32.

What formula should you use to find the number of neutrons in an atom?

a)

Atomic Mass - Atomic Number

b)

Mass Number - Atomic Mass

c)

Atomic Mass- Mass Number

d)

Atomic Number - Atomic Mass

33.

The mass number and atomic mass are both values that represent the mass of an atom.

a)

True

b)

False

34.

How many electrons does an Iron ATOM have?

(a)  

35.

How many electrons can each of the first 3 electron shells hold? (1st shell , 2nd shell , 3rd shell)

a)

4,10,16

b)

4,10,18

c)

2,8,18

d)

2,8,16

36.

How many valence electrons does the model below have?

a)

29

b)

30

c)

18

d)

1

37.

Element X has 5 protons and 6 neutrons. Element Y has 6 protons and 6 neutrons.

a)

Isotope

b)

Different elements

38.

Element R has 18 neutrons and 17 protons. Element S has 18 protons and 17 neutrons.

a)

Isotopes

b)

Different Elements

39.

Element Y has atomic number 25 and an atomic mass of 55. Element Z has atomic number 25 and an atomic mass of 56.

a)

Different Elements

b)

Isotopes

40.

What are isotopes?

a)

Atoms with the same # of neutrons but different # of protons

b)

Atoms with the same # of neutrons but different # of electrons

c)

Atoms with a different # of protons and different # of neutrons

d)

Atoms with the same # of protons but different # of neutrons

41.

Which description best fits that of an isotope?

a)

Same # of protons, different # of neutrons

b)

Same # of protons, different # of electrons

c)

Same # of neutrons, different # of protons

d)

Same # of protons and neutrons, different # of electrons

42.

Isotopes have the same mass number.

a)

True

b)

False

43.

Isotopes have the same atomic number

a)

True

b)

False

44.

Element C has an atomic number of 74 and atomic mass of 184. Element D has 74 protons and 110 neutrons.

a)

Isotopes

b)

Different Elements

45.

What does the 13 stand for in Carbon-13?

a)

Atomic Number

b)

Atomic Mass

c)

Number of Carbon Atoms

d)

Number of Electrons

46.

What does the 19 stand for in Oxygen-19?

a)

Atomic Number

b)

Atomic Mass

c)

Number of Oxygen atoms

d)

Number of Electrons

47.

What does the 239 stand for in U-239?

a)

Atomic Number

b)

Atomic Mass

c)

Number of Oxygen atoms

d)

Number of Electrons

48.

Put this into hyphenated notation. (Carbon)

(a)  

49.

What is the atomic mass of this isotope?

(a)  

50.

What is the atomic number of this isotope?

(a)  

51.

Write this hyphenated notation for this element. (Calcium)

(a)  

52.

How many valence electrons are present?

a)

4

b)

31

c)

18

d)

3

53.

Look at the image to decide if they are isotope or different elements.

a)

Isotopes

b)

Different Elements

54.

Put this into hyphenated notation. (Uranium)

(a)  

55.

What is the atomic number of uranium?

(a)  

56.

What is the atomic mass of uranium?

(a)  

57.

How many neutrons does this isotope have?

(a)  

58.

How many protons does this isotope have?

(a)  

59.

How many protons does this isotope have?

(a)  

60.

How many neutrons does this isotope have?

(a)  

61.

What is the charge of a cation?

a)

Positive

b)

Negative

c)

Neutral

d)

None of the above

62.

What is the charge of a anion?

a)

Positive

b)

Negative

c)

Neutral

d)

None of the above

63.

True or False: A cation is an ion that has more protons than electrons.

a)

True

b)

False

64.

True or False: An anion is an ion that has more protons than electrons.

a)

True

b)

False

65.

Iron (Fe) has 26 protons and 24 electrons. What is the charge of the ion?

a)

2+

b)

+2

c)

2-

d)

-2

66.

Nitrogen has 7 protons and 10 electrons. What is the charge of the ion?

a)

3+

b)

3-

c)

-3

d)

+3

67.

What is the difference between an atom and ion?

a)

Atoms have a neutral charge, but ions are + or -.

b)

Ions have a neutral charge, but atoms are + or -.

c)

They are the same thing.

d)

Ions have more neutrons than atoms

68.

True or False: Atoms have a neutral charge

a)

True

b)

False

69.

What formula can be used to find the Charge of ion?

a)

Protons- Neutrons

b)

Protons + Neutrons

c)

Protons + Electrons

d)

Protons - Electrons

70.

True or False: The number of protons never changes, but the number of electrons and neutrons can change for an element.

a)

True

b)

False

Similar Resources on Wayground

Unit 2 Review

72 questions

Unit 2 Review

quiz

Worksheet

•

10th - 12th Grade

Atomic Structure/Bonding/Periodicity

73 questions

Atomic Structure/Bonding/Periodicity

quiz

Worksheet

•

11th Grade

termokimia

65 questions

termokimia

quiz

Worksheet

•

12th Grade - University

Unit 7 - Chemical Reactions

65 questions

Unit 7 - Chemical Reactions

quiz

Worksheet

•

9th - 12th Grade

Naruto - Boruto

68 questions

Naruto - Boruto

quiz

Worksheet

•

12th Grade

CBA 02 Review Spg 23

65 questions

CBA 02 Review Spg 23

quiz

Worksheet

•

9th - 12th Grade

Kinetics & Thermodynamics

75 questions

Kinetics & Thermodynamics

quiz

Worksheet

•

10th - 12th Grade