Free Printable Atoms and Molecules

1.

All matter is made of

a)

energy

b)

atoms

c)

electrons

d)

compounds

2.

Elements are made of

a)

many types of atoms

b)

the periodic table

c)

one type of atom

d)

molecules

3.

What is the basic unit of matter and is the smallest particle of an element?

a)

Atoms

b)

Elements

c)

Compounds

d)

Molecules

4.

Two or more atoms chemically bonded together are called a

a)

atom

b)

element

c)

molecule

d)

mixture

5.

How many carbon atoms are there in a methane molecule?

a)

0

b)

1

c)

4

d)

5

6.

How many hydrogen atoms are there in a water molecule?

a)

0

b)

1

c)

2

d)

3

7.

What is the total number of atoms in an ammonia (NH₃) molecule?

a)

1

b)

2

c)

3

d)

4

8.

Carbon dioxide (CO₂) contains how many atoms of oxygen?

a)

0

b)

1

c)

2

d)

3

9.

When there is no subscript after an element's symbol, it means there are how many atoms of that element?

a)

0

b)

1

c)

2

d)

unknown

10.

How many hydrogen atoms are in a molecule of glucose/sugar (C₆H₁₂O₆)?

a)

6

b)

12

c)

18

d)

24

11.

The smallest unit of an element that still has the properties of that element.

a)

Atom

b)

Adam

c)

Nucleus

d)

Element

12.

The center of an atom, usually made of protons and neutrons

a)

Nucleus

b)

Proton

c)

Atomic Number

d)

Isotope

13.

A substance made up of only one kind of atom

a)

Element

b)

Elementary

c)

Ellie

d)

Elephant

14.

A table that shows the elements arranged by their atomic numbers

a)

Periodic Table

b)

Dining Room Table

c)

Wooden Table

d)

Occasional Table

15.

Hydrogen is a pure substance represented by the chemical symbol H. Which of the following best describes hydrogen?

a)

Hydrogen is an element made of two or more kinds of atoms.

b)

Hydrogen is a compound made of only one kind of atom.

c)

Hydrogen is a compound made of two or more kinds of atoms.

d)

Hydrogen is an element made of only one kind of atom.

16.

The element oxygen, represented by the symbol O, is classified as

a)

a pure substance

b)

a compound

c)

a mixture

d)

a solution

17.

What is a compound?

a)

an atom with more electrons than protons

b)

a substance in which the atoms of two or more elements are combined together

c)

an atom with more neutrons than protons

d)

a substance in which the atoms of three or more elements are combined together

18.

The chemical combination of two or more different kinds of atoms in fixed amounts is called a(n)

a)

orbit

b)

compound

c)

mixture

d)

element

19.

Atoms combine to form _______.

a)

electrons

b)

molecules

c)

nuclei

d)

neutrons

20.

What is the picture displayed?

a)

Carbon Dioxide

b)

Water

c)

Gasoline

d)

Liquid Nitrogen

21.

All matter is made of what

a)

energy

b)

atoms

c)

electrons

d)

compounds

22.

This compound known as H₂O is more commonly know as what?

a)

Water

b)

Carbon dioxide

c)

Hydrogen peroxide

d)

Toothpaste

23.

When you heat matter, what happens to the atoms and molecules?

a)

they move faster

b)

they move slower

c)

they stop moving

d)

they stay the same

24.

All ____________ are made up of two or more atoms bonded together.

a)

atoms

b)

molecules

c)

electrons

d)

elements

25.

H₂O₂← ?
This number tells the number of atoms present.

a)

coefficient

b)

molecule

c)

subscript

d)

atom

26.

2H₂O
How many Hydrogen atoms are present?

a)

2

b)

4

c)

1

d)

10

27.

2H₂O
How many Oxygen atoms are present?

a)

2

b)

4

c)

1

d)

5

28.

2H₂O
How many H₂O molecules are present?

a)

1

b)

4

c)

2

d)

8

29.

What is a molecule?

a)

two elements bonded together (sharing electrons)

b)

a mixture of different substances

c)

smallest individual particles

d)

salt mixed in water

30.

What is a compound?

a)

Two different elements bonded together.

b)

Two of the same elements bonded together.

c)

A mixture of different substances.

d)

Two substances stuck together with glue.

31.

What is the chemical symbol of the element Hydrogen?

a)

Hy

b)

H

c)

Hydro

d)

Hg

32.

Which of the following is a chemical formula?

a)

H₂SO₄

b)

Si

c)

Hg

d)

C

33.

Which of the following is a chemical symbol?

a)

H₂O

b)

O

c)

NaCl

d)

FeO

34.

What is the chemical symbol for the element Carbon?

a)

C

b)

Ca

c)

Carb

d)

CO

35.

What is the chemical symbol for the element mercury?

a)

Hg

b)

Merc

c)

MeC

d)

MY

36.

What are the basic building blocks for all matter?

a)

atoms

b)

elements

c)

compounds

d)

chemicals

37.

A recipe for a chemical substance is called a ________ _________.

a)

coefficent

b)

chemical formula

c)

Oxygen

d)

atom

38.

Anything that has mass and takes up space is

a)

matter

b)

atoms

c)

nucleus

d)

quark

39.

Matter that is composed of only one kind of atom is

a)

lonely

b)

proton

c)

element

d)

quark

40.

The smallest particle of an element is a/an

a)

matter

b)

atom

c)

molecule

d)

electron

41.

This element is found in every living thing

a)

blood

b)

lungs

c)

carbon

d)

hydrogen

42.

Which statement about atoms is FALSE?

a)

Atoms contain subatomic particles

b)

Atoms are the building blocks of matter

c)

Atoms can be created and destroyed

d)

Atoms can combine

43.

Anything that has mass and takes up space

a)

atoms

b)

elements

c)

molecules

d)

matter

44.

the smallest particle of matter

a)

atom

b)

element

c)

molecule

d)

compound

45.

made up of one or more of the same type of atom

a)

atom

b)

element

c)

molecule

d)

compound

46.

Is K an element or a molecule?

a)

element

b)

molecule

47.

How many atoms/elements are in NO₂?

a)

1

b)

2

c)

3

d)

4

48.

Is NO₂an element or a molecule?

a)

element

b)

molecule

49.

How many atoms/elements are in CaCO₃?

a)

3

b)

4

c)

5

d)

6

50.

Is CaCO₃ an element or a molecule?

a)

element

b)

molecule

51.

How many atoms/elements are in H₃?

a)

1

b)

0

c)

2

d)

3

52.

Is H an element or a molecule?

a)

element

b)

molecule

53.

Molecule or Not? N₂

a)

molecule

b)

not a molecule

54.

Molecule or Not? Pb

a)

molecule

b)

not a molecule

55.

Molecule or Not? CaCO

a)

molecule

b)

not a molecule

56.

Molecule or Not? CO

a)

molecule

b)

not a molecule

57.

What does this image represent?

a)

Atom

b)

Element

c)

Molecule

d)

Marshmallows

58.

Which correctly describes the smallest amount of an element?

a)

Atom

b)

Molecule

c)

Compound

d)

Proton

59.

How would H2O be classified? Check all that apply.

a)

Atom

b)

Molecule

c)

Compound

60.

How would O2 be qualified. Check all answers that apply.

a)

Atom

b)

Molecule

c)

Compound

61.

What does conservation of matter mean?

a)

Matter cycles through an ecosystem and 10% is lost as you move through each trophic level.

b)

Matter cannot be created, but can be destroyed.

c)

Matter cannot be created nor destroyed, and cycles through ecosystems.

d)

Matter and energy both move through ecosystems with 100% efficiency.

62.

What is an element?

a)

A pure substance that cannot be broken down.

b)

Two atoms bonded together.

c)

Two or more different types of atoms bonded together.

d)

An molecule with an unequal distribution of charge.

63.

What is matter?

a)

Matter has mass and takes up space.

b)

Matter is charged atoms.

c)

Matter has a charge and a mass.

d)

Matter is polar molecules.

64.

The formula for water is $H_2O$ . Each molecule of water includes ___________________.

a)

one hydrogen atom and two oxygen atoms

b)

two hydrogen atoms and one oxygen atom

c)

two hydrogen atoms and two oxygen atoms

d)

one chlorine atom and two oxygen atoms

65.

Sodium is an _______________

a)

element

b)

compound

c)

salt

d)

molecule

66.

all matter is made of what

a)

energy

b)

atoms

c)

electrons

d)

compounds

67.

The smallest part of an element is known as the

a)

Periodic Table

b)

Atom

c)

Group

d)

Period

68.

2H₂O
How many Oxygen atoms are present?

a)

2

b)

4

c)

1

d)

5

69.

Which term defines any substance that cannot be broken down into a simpler substance?

a)

atom

b)

molecule

c)

element

d)

compound

70.

What do we call a chemical substance made up of 2 or more different types atoms bonded together?

a)

formula

b)

atom

c)

subscript

d)

compound

71.

All ____________ are made up of two or more atoms bonded together.

a)

atoms

b)

molecules

c)

electrons

d)

elements

72.

A substance made of only one kind of atom is a/an.......

a)

compound

b)

atom

c)

molecule

d)

element

73.

Everything in our world of made of ........

a)

atoms

b)

cheerios

c)

plasma

d)

water

74.

True or False - Each element is made of atoms that are all alike.

a)

True

b)

False

75.

What substance is formed when 2 or more different kinds of atoms bond to each other?

a)

element

b)

compound

c)

atom

d)

nucleus

76.

Which is an example of an element?

a)

pizza

b)

hydrogen

c)

air

d)

water

77.

How many elements are there on the periodic table today?

a)

63

b)

77

c)

113

d)

118

78.

What element is represented by the letter C

a)

Chlorine

b)

Carbon

c)

Coffee

d)

Copper

79.

What element is represented by Fe?

a)

Cobalt

b)

Iodine

c)

French Fries

d)

Iron

80.

What element is represented by Au?

a)

Augmentin

b)

Silver

c)

Titanium

d)

Gold

81.

What element is represented by Cu?

a)

Copper

b)

Tin

c)

Aluminum

d)

Bronze

82.

What element is represented by Li?

a)

Lime

b)

Lemon

c)

Lithium

d)

Lionel

83.

What element is represented by Na?

a)

Need

b)

Sodium

c)

Nickel

d)

Neon

84.

Select ALL of the items that are made of atoms:

a)

Desk

b)

Pencil

c)

Plants

d)

People

85.

A molecule is _______________________.

a)

always blue.

b)

made of 200 or more atoms combined.

c)

made of 3 or more atoms combined.

d)

made of 2 or more atoms combined.

86.

How many atoms make up this water molecule?

a)

0

b)

1

c)

2

d)

3

87.

What element or elements are present in the molecule: CO₂? (use the periodic table in your folders to check)

a)

Cobalt

b)

Carbon and Oxygen

c)

Oxygen

d)

Chlorine

88.

Matter is something that has ___________ and _____________.

a)

mass and is always hungry.

b)

heat and is using up energy.

c)

mass and takes up space.

d)

heat and does not use energy.

89.

True or False: It is possible to see an atom with the naked eye.

a)

True

b)

False

90.

Which of the following is not a molecule:

a)

b)

c)

91.

Which of the following are molecules:

a)

b)

c)

92.

What elements make up the following molecule: H₂O (Check your periodic table)

a)

Helium and Oxygen

b)

Hydrogen

c)

Oxygen

d)

Oxygen and Hydrogen

93.

What is the number of total atoms in the molecule: C₆H₁₂O₆?

a)

12

b)

3

c)

24

d)

18

94.

How many total atoms make up the molecule NaCl ?

a)

1

b)

2

c)

3

d)

5

95.

How many Nitrogen atoms are in the molecule NH₃ ?

a)

1

b)

2

c)

3

d)

4

96.

All matter is made up of

a)

energy

b)

atoms

c)

electrons

d)

compounds

97.

Atoms are the basic unit of

a)

matter

b)

energy

c)

protons

d)

electrons

98.

How many H atoms are in H₂O?

a)

1

b)

2

99.

How many water molecules are in H₂O?

a)

1

b)

2

100.

How many carbon atoms are in on molecule of glucose, C₆H₁₂0₆?

a)

1

b)

6

c)

12

d)

24

101.

How many hydrogen atoms are in a water molecule?

a)

1

b)

2

c)

3

d)

0

102.

C is the chemical symbol for...

a)

Carbon

b)

Calcium

c)

Chlorine

d)

Californium

103.

He is the chemical symbol for

a)

Hydrogen

b)

Helium

c)

Hexane

d)

Hufflepuff

104.

Pencil lead is made of...

a)

Hydrogen

b)

Carbon

c)

Oxygen

d)

Iron

105.

What is the chemical symbol for the element Chlorine?

a)

C

b)

Ci

c)

Cn

d)

Cl

106.

H₂SO_{4 contains how many atoms?}

a)

3

b)

4

c)

6

d)

7

107.

C₆H₁₂O_{6 is made of how many atoms?}

a)

3

b)

6

c)

12

d)

24

108.

How many atoms are in five molecules of water (H₂O)

a)

3

b)

5

c)

10

d)

15

109.

A substance with two or more different types of atoms bonded together is called...

a)

An element

b)

An atom

c)

A compound

d)

A mixture

110.

They are everywhere! They make up the air you breathe, the water you drink, and the food you eat. They are in your furniture, clothing, and pets. They even make up you. What are they?

a)

Elements

b)

Molecule

c)

Atom

d)

Compounds

111.

GOLD

a)

Al

b)

Ag

c)

Ar

d)

Au

112.

CHLORINE

a)

C

b)

Ca

c)

Cl

d)

Cu

113.

CALCIUM

a)

C

b)

Ca

c)

Cu

d)

Cl

114.

CARBON

a)

C

b)

Ca

c)

Cl

d)

Cu

115.

COPPER

a)

C

b)

Ca

c)

Cu

d)

Cl

116.

SULFUR

a)

Su

b)

S

c)

Sf

d)

Si

117.

SILVER

a)

Au

b)

Ag

c)

Al

d)

Ar

118.

SILICON

a)

S

b)

Si

c)

Su

d)

Sc

119.

SODIUM

a)

S

b)

So

c)

N

d)

Na

120.

POTASSIUM

a)

P

b)

Ka

c)

K

d)

Pt

121.

How many different elements are in this chemical formula: C₂H₂ClK₃

a)

6

b)

8

c)

2

d)

4

122.

Which of the following chemical formulas represents a compound?

a)

C₃

b)

O₂

c)

CH₃CHO

d)

H₂

123.

What is water?

a)

element

b)

compound

c)

mixture

124.

What is the chemical symbol for mercury?

a)

Hg

b)

Mc

c)

My

d)

C

125.

Which is the correct formula for:
three hydrogen (H)
one sulfur (S)
four oxygen (O)

a)

H₃SO₄

b)

HSO₄

c)

H₄S₃O

d)

H₂O

126.

Number of C's in 2Na₂CO₃

a)

1

b)

2

c)

3

d)

5

127.

The number of Na's in Na₂CO₃

a)

1

b)

2

c)

3

d)

6

128.

How many Elements are in the compound C₂H₈O ?

a)

2

b)

1

c)

3

d)

0

129.

How many total atoms are in the compound C₂H₈O ?

a)

11

b)

2

c)

8

d)

1

130.

How many Aluminum are in Al₂O₃?

a)

3

b)

2

c)

5

131.

How many Sodium (Na) are in 6NaCl?

a)

1

b)

12

c)

6

132.

How many Chlorine are in MgCl₂?

a)

2

b)

1

c)

3

133.

How many Nitrogen are in 2AlN?

a)

4

b)

5

c)

1

d)

2

134.

How many atoms are there TOTAL in:
H₂SO₄

a)

6

b)

5

c)

7

d)

3

135.

How many elements are in C₆H₁₂O₆?

a)

1

b)

2

c)

3

d)

4

136.

How many atoms of Hydrogen are in this compound

a)

1

b)

2

c)

3

d)

4

137.

How many atoms of Oxygen are in this compound?

a)

1

b)

2

c)

3

d)

4

138.

How many atoms are in the element Carbon in this compound?
H₂C₃O₄N₅

a)

2

b)

3

c)

4

d)

5

139.

How many TOTAL atoms are in this compound?
H₂C₃O₄N₅

a)

5

b)

14

c)

15

d)

19

140.

In this compound structure of alcohol, how many Hydrogen atoms are there?

a)

2

b)

4

c)

6

d)

8

141.

Which is the correct formula for:
three hydrogen (H)
one sulfur (S)
four oxygen (O)

a)

H₃SO₄

b)

HSO₄

c)

H₄S₃O

d)

H₂O

142.

SODIUM CHLORIDE IS COMMONLY CALLED TABLE SALT. HOW MANY ELEMENTS ARE IN NaCl?

a)

1

b)

2

c)

3

d)

4

143.

HOW MANY ELEMENTS ARE PRESENT IN SULFURIC ACID, H₂SO₄? (PICTURED ABOVE)

a)

1

b)

2

c)

3

d)

4

144.

GLUCOSE (C₆H₁₂O₆) IS A SIMPLE SUGAR SYNTHESIZED BY PLANTS. HOW MANY ELEMENTS ARE PRESENT IN THIS COMPOUND?

a)

1

b)

2

c)

3

d)

ALL OF THE ABOVE

145.

SODIUM HYPOCHLORITE (NaClO) COMMONLY KNOWN AS BLEACH, CONTAINS _______ ELEMENTS.

a)

2

b)

4

c)

6

d)

NONE OF THE ABOVE

146.

SiO₂ IS COMMONLY KNOWN AS GLASS. HOW MANY ELEMENTS DOES SILICON DIOXIDE CONTAIN?

a)

2

b)

3

c)

4

d)

5

147.

HOW MANY ELEMENTS ARE IN ALUMINIUM (Al)?

a)

4

b)

3

c)

2

d)

1

148.

THERE ARE 2 ELEMENTS IN A MOLECULE OF OXYGEN (O₂).

a)

FALSE

b)

TRUE

c)

ALL OF THE ABOVE

d)

IT DEPENDS ON WHO IS COUNTING.

149.

PURE COBALT, Co, CONTAINS TWO ELEMENTS.

a)

ALWAYS TRUE

b)

ALWAYS FALSE

c)

SOMETIMES TRUE

d)

IT DEPENDS ON WHO IS COUNTING

150.

WHICH OF THESE COMPOUNDS CONTAINS MORE ELEMENTS: NaHCO₃ (BAKING SODA) OR CaCO₃ (CHALK)?

a)

THEY HAVE AN EQUAL NUMBER OF ELEMENTS

b)

CHALK

c)

BAKING SODA

d)

ALL OF THE ABOVE

151.

Aluminum

a)

Al

b)

A

c)

Ai

d)

Au

152.

Calcium

a)

C

b)

Ca

c)

Cl

d)

Cm

153.

Carbon

a)

C

b)

Ca

c)

Cr

d)

Cn

154.

Chlorine

a)

C

b)

Ch

c)

Cl

d)

Ce

155.

Copper

a)

C

b)

Co

c)

Cp

d)

Cu

156.

Fluorine

a)

Fl

b)

Fu

c)

F

d)

Fn

157.

Gold

a)

G

b)

Go

c)

Ag

d)

Au

158.

Helium

a)

H

b)

He

c)

Hm

d)

K

159.

Hydrogen

a)

He

b)

Hy

c)

Hn

d)

H

160.

Iron

a)

I

b)

Fe

c)

Ir

d)

In

161.

Magnesium

a)

Mn

b)

M

c)

Me

d)

Mg

162.

Nitrogen

a)

Ni

b)

Nt

c)

N

d)

Ng

163.

Oxygen

a)

Ox

b)

Oy

c)

Oe

d)

O

164.

Sodium

a)

S

b)

Na

c)

So

d)

K

Atoms and Molecules

Total questions: 164

Worksheet time: 2hrs 32mins

Similar Resources on Wayground