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Worksheets

Quarter 1 test review

Total questions: 177

Worksheet time: 2hrs 13mins

Name
Class
Date
1.

Used the word "atomos" to decsribe the uncuttable (indivisible) atom.

a)

Democritus

b)

Thomson

c)

Bohr

d)

Dalton

2.

Proposed that electrons move around the nucleus in specific layers, or shells.

a)

Bohr

b)

Rutherford

c)

Chadwick

d)

Thomson

3.

Which of the following is/are conclusions based on Rutherford’s gold foil experiment?

a)

Atom is mostly empty space

b)

The nucleus is positively charged

c)

The atom has a small dense nucleus

d)

All answers are correct

4.

He discovered electrons

a)

J.J. Thomson

b)

John Dalton

c)

Ernest Rutherford

d)

Niels Bohr

5.
Ions are: 
a)
atoms with a positive or negative charge
b)
atoms with no charge
c)
atoms with ONLY a positive charge
d)
atoms with ONLY a negative charge
6.
What is an ion?
a)
A Charged Atom
b)
A Large Atom
c)
A Small Atom
d)
A Cute Atom
7.
An atom becomes _______ when it loses electrons.
a)
Positive
b)
Negative
c)
Neutral
d)
Invinsible
8.
An atom becomes _________ when it gains electrons.
a)
Positive
b)
Negative
c)
Neutral
d)
Invinsible
9.

What is the charge of an atom with 5 protons, 5 neutrons, and 7 electrons?

a)

0

b)

+5

c)

+2

d)

-2

10.

If an element contains 13 protons and 12 electrons what would be its overall charge?

a)

+1

b)

-1

c)

+13

d)

-13

11.

A Bromine ion gains 1 electron, which of the following is the correct symbol for a Bromine ion?

a)

Br-1

b)

Br+1

c)

Br+7

d)

Br-7

12.

How would you write a Sulfur that has gained 2 electrons?

a)

S+2

b)

S-2

c)

S+6

d)

S-6

13.

If an atom of Boron has 5 protons how many electrons will it need to have to be neutral?

a)

3

b)

4

c)

5

d)

6

14.

How many protons are in a Carbon atom?

(Type a whole number only!)

(a)  

15.

What is the charge of a neutron, and what is its location in an atom?

a)

Neutral charge, located in nucleus.

b)

Negative charge, located in nucleus.

c)

Neutral charge, located in the orbitals/cloud.

d)

Negative charge, located in the orbitals/cloud.

16.

What is the charge of a proton, and what is its location in an atom?

a)

Neutral charge, located in nucleus.

b)

Positive charge, located in nucleus.

c)

Neutral charge, located in the orbitals/cloud.

d)

Positive charge, located in the orbitals/cloud.

17.

What is the charge of an electron, and what is its location in an atom?

a)

Negative charge, located in nucleus.

b)

Neutral charge, located in nucleus.

c)

Negative charge, located in the orbitals/cloud.

d)

Neutral charge, located in the orbitals/cloud.

18.

An electron and proton are ALIKE because...

a)

Neither has a charge.

b)

Both are charged.

c)

Both are in the nucleus.

19.

A neutron and proton are ALIKE because...

a)

Neither has a charge.

b)

Both are charged.

c)

Both are in the nucleus.

20.

Protons are DIFFERENT from neutrons because...

a)

One is in the nucleus, the other is in the orbitals/cloud.

b)

One has a charge, the other does not.

c)

Both are in the nucleus.

21.

The mass number of an atom is the number of ...

a)

Electrons plus Protons

b)

Neutrons plus Electrons

c)

Protons plus Neutrons

22.

What Greek philosopher was the first person to propose the idea that matter is made of tiny particles called atoms

a)

Democritus

b)

Dalton

c)

Thompson

d)

Rutherford

e)

Bohr

23.

In an atom of boron-11, has a mass number of 11 how many neutrons are present?

Type a whole number!

(Use your periodic table!)

(a)  

24.

Which subatomic particle identifies an element?

a)

Protons

b)

Neutrons

c)

Electrons

d)

Protons and Neutrons

25.

Which particles have a charge?

a)

Protons

b)

Neutrons

c)

Electrons

26.

Which particles are found in the nucleus?

a)

Protons

b)

Neutrons

c)

Electrons

27.

Which particles account for almost all the mass of an atom?

a)

Protons

b)

Neutrons

c)

Electrons

28.

Magnesium's atomic number is 12. This means that a magnesium atom has

a)

12 protons in its nucleus

b)

A total of 12 protons and electrons

c)

12 neutrons in its nucleus

d)

A total of 12 neutrons and electrons

29.

A potassium atom has an atomic mass of 39. Its atomic number is 19. How many neutrons does the iron atom have?

a)

19

b)

39

c)

20

d)

58

30.

Two atoms that are different isotopes of the same element have

a)

a different number of protons but the same number of neutrons

b)

the same number of protons and the same number of neutrons

c)

a different number of protons and a different number of neutrons

d)

the same number of protons but different numbers of neutrons

31.

How many neutrons does this isotope have?

(a)  

32.

Element X has two naturally occurring isotopes. One isotope has a mass of 10 amu with a relative abundance of 20%. The other isotope hasa mass of 11 amu and relative abundance of 80%. What is the average atomic mass of Element X

(a)  

33.

How is average atomic mass determined?

a)

By adding all of the protons and neutrons together.

b)

by summing the masses of the element's isotopes, each multiplied by its natural abundance on Earth

c)

By multiplying of often protons and neutrons occur and adding up the averages.

34.

If an atom has 5 protons and 6 neutrons what is the proper name of the isotope?

a)

Boron-1

b)

Boron-11

c)

Carbon-11

d)

Carbon 11

e)

Boron Carbonate

35.

How many neutrons does an atom of symbol pictured have?

a)

26

b)

-26

c)

70

36.

What is the total number of particles in the nucleus atom of symbol pictured have?

a)

22

b)

70

c)

48

37.
4.35% of all X atoms have a mass of 39.946 amu. 83.79% have a mass of 41.941 amu, 9.50% have a mass of 42.941 amu, and 2.36% have a mass of 43.939 amu. What is the average atomic mass of atom X?
a)
41.97 amu
b)
42.19 amu
c)
10.43 amu
d)
40.04 amu
38.
24.1% of all the isotopes of a an element have a mass of 75.23 amu, 48.7% have a mass of 74.61 amu, and 27.2% have a mass of 75.20 amu.
What is the average mass of this element?
a)
74.92 amu
b)
24.97 amu
c)
75.01 amu
d)
74.51 amu
39.
How many Oxygens are in this molecule? 
(OH)2
a)
4
b)
1
c)
2
d)
3
40.
What are the smaller numbers that you CANNOT change in a chemical equation? 
a)
Coefficient
b)
Products
c)
Reactants
d)
Subscript
41.
What are the larger numbers that you CAN CHANGE in a chemical equation? 
a)
Coefficient 
b)
Products
c)
Reactants
d)
Subscripts
42.
How many HCl molecules do you need to balance this equation? 
Mg +  __HCl --->  MgCl2 + H2
a)
1
b)
2
c)
3
d)
4
43.
Pb(NO3)2  +  KI --> PbI2 + KNO3
What type of reaction is this? 
a)
Synthesis 
b)
Decomposition 
c)
Single Replacement
d)
Double Replacement 
44.
What type of reaction is this?  
__H2O2 ---->  __H2O + O2
a)
Synthesis
b)
Decomposition 
c)
Single Replacement
d)
Combustion 
45.
What law governs the balancing of chemical equations? 
a)
Law of Energy
b)
Law of Conservation of Matter/Mass
c)
Law of Gravity
d)
Law of Matter Movement 
46.

Balance this equation: _Zn + _O2 --> _ZnO

a)

1, 1, 2

b)

2, 1, 2

c)

1, 1, 1

d)

2 ,2, 2

47.
Is this balanced?
Al + O2 → 2Al2O3
a)
Yes
b)
No
48.

Which side of the yield sign are the reactants found?

a)

to the left

b)

to the right

c)

in the middle

49.

Which side of the arrow are the products found?

a)

to the left

b)

to the right

c)

in the middle

50.

How many water molecules do you need to balance the equation: __H20 --> 2H2 + O2?

a)

1

b)

2

c)

3

d)

0

51.

What is the Law of Conservation of Mass?

a)

It states that matter cannot be created or destroyed.

b)

It states that energy cannot be created or destroyed.

c)

It states that matter can be created or destroyed.

d)

It states that sound can be created or destroyed.

52.
What is the part of the chemical equation in green called? 
Fe + S --> FeS
a)
products
b)
reactants
c)
yield
d)
chemical formula
53.
How many Hydrogen are in 4H2O?
a)
6
b)
8
c)
2
d)
4
54.
What coefficient should be used to make the following equation balanced?
N2+O2--> _NO 
a)
1
b)
2
c)
3
d)
4
55.

Balance the following equation:

___ Mg+ ___ O2→___ MgO

a)

1, 1, 3

b)

2, 1, 2

c)

1, 2, 1

d)

2, 2, 2

56.

Which equation is balanced?

a)

PbO2 + 2H2

b)

SO2 + H20 --> H2SO4

c)

2Na + 2H2O --> 2NaOH + H2

57.
How many HCl molecules do you need to balance this equation? 
Mg +  __HCl --->  MgCl2 + H2
a)
1
b)
2
c)
3
d)
4
58.
Balance this equation
_N2 + _H2 --> _NH3
a)
1,2,3
b)
1,3,2
c)
1,1,2
d)
2,1,1
59.

Is this equation balanced?

SO3 + H2O --> H2SO4

a)
yes
b)
no
60.

__Na + O2 -----> __Na2O


Balance it

a)

2Na + O2 ---> 4Na2O

b)

4Na + O2 ---> 2Na2O

c)

Na + O2 ---> Na2O

d)

2Na + 2O2 / 4Na2O

61.

(a)   are made from only one type of atom.

62.

Compounds are created when 2 or more (a)   chemically combine.

63.

Mixtures can be separated by (a)   means.

64.

What type of matter can ONLY be separated by chemical means?

a)

Element

b)

Mixture

c)

Compound

d)

Atom

65.

What type of matter cannot be separated by any means?

a)

Element

b)

Mixture

c)

Compound

66.

Check all examples that are heterogeneous mixtures.

a)

Saltwater

b)

Pepperoni pizza

c)

Chopped salad

d)

Air

67.

Check all examples that are homogeneous mixtures.

a)

Milk

b)

Tea

c)

Chicken noodle soup

d)

Air

68.

Which of these are compounds?

a)

Water (H2O)

b)

Table salt (NaCl)

c)

Oxygen (O2)

d)

Glucose (C6H12O6)

69.

Which of these is not an element?

a)

Water (H2O)

b)

Copper (Cu)

c)

Carbon (C)

d)

Iron (Fe)

70.

What is the smallest unit of an element that retains the chemical properties of that element?

a)

Electron

b)

Neutron

c)

Molecule

d)

Atom

71.

Which substance is composed of only one type of atom?

a)

Water (H2O)

b)

Table salt (NaCl)

c)

Gold (Au)

d)

Glucose (C6H12O6)

72.

Which of these samples shown best represents an mixture?

a)

A

b)

B

c)

C

d)

D

73.

Which of these samples shown best represents an element?

a)

A

b)

B

c)

C

d)

D

74.

Which of these samples shown best represents a compound?

a)

A

b)

B

c)

C

d)

D

75.

What state of matter is this

a)

solid

b)

liquid

c)

gas

76.

What state of matter is this

a)

solid

b)

liquid

c)

gas

77.

What state of matter is this

a)

solid

b)

liquid

c)

gas

78.

What state of matter is this (inside)

a)

solid

b)

liquid

c)

gas

79.

What state of matter is this

a)

solid

b)

liquid

c)

gas

80.

Which state of matter does this picture show?

a)

Solid

b)

Liquid

c)

Gas

81.

Which state of matter is represented in the following diagram?

a)

Liquid

b)

Gas

c)

Solid

82.
The steam coming off the pot of boiling water is an example of....
a)
a solid becoming a liquid
b)
a liquid becoming a solid
c)
a liquid becoming a gas
d)
a gas becoming a liquid
83.
Which of the following statements is NOT true of all different types of matter?
a)
They are made of atoms and molecules
b)
The particles are always in motion
c)
The particles always move at the same speed
d)
They are made of particles that are too small to see
84.

At higher temperatures _____________

a)

atoms in an object have less energy and move slower

b)

atoms in an object have more energy and move faster

85.

As temperature increases, what happens to atoms?

a)

They speed up

b)

They slow down

86.

What is happening in this picture of this lake freezing?

a)

atoms are speeding up

b)

atoms are slowing down

87.

Matter is made of tiny particles called atoms

a)

True

b)

False

88.

State of matter that takes the shape of it's container and has a definite volume.

a)

Solid state

b)

Liquid state

c)

Gas state

89.

State of matter that can fill containers with no fixed shape or volume.

a)

Solid state

b)

Liquid state

c)

Gas state

90.

State of matter in which materials have a definite shape and volume.

a)

Solid state

b)

Liquid state

c)

Gas state

91.

What change of state is taking place in this photograph?

a)

Condensation

b)

Freezing

c)

Melting

92.

Which of the following is a property of gases?

a)

They have a definite volume.

b)

They have no definite shape.

c)

They have no ability to flow.

93.

Which change of state occurs when particles in a solid begin to move slowly past each other?

a)

Melting

b)

Freezing

c)

Condensing

94.

Draw a solid/ dibuja un sólido

95.

Draw a liquid/ dibuja un líquido

96.

Draw a gas/ Dibuja un gaseoso

97.

Choose ALL the solid objects

a)
b)
c)
d)
98.

Choose ALL the liquid objects

a)
b)
c)
d)
99.

Choose ALL the gas objects

a)
b)
c)
d)
100.

Liquid

a)
b)
101.

Gas

a)
b)
102.

Solid

a)
b)
c)
103.

Evaporation is the change of state of a

a)

Gas to solid

b)

Liquid to Gas

c)

Solid to liquid

d)

Liquid to Solid

104.

What is the state change that occurs, when ice turns into a liquid?

a)

Boiling

b)

Condensation

c)

Melting

d)

evaporation

105.

Condensation is when

a)

Liquid turns to a solid

b)

Gas turns to liquid

c)

Solid turns to liquid

d)

Liquid turns to a gas

106.

This image is an example of what particle

a)

Solid

b)

Liquid

c)

Gas

107.

Which statements better define the following element:

a)

Liquid and Solid

b)

Gas and Liquid

c)

Solid and Gas

d)

Gas and Plasma

108.

What change of state is taking place in this photograph?

a)

Condensation

b)

Freezing

c)

Vaporization

d)

Melting

109.

The diagram shows the changes in state of water (H2O). What is the process Z called?

a)

Condensation

b)

Freezing

c)

Vaporization

d)

Melting

110.

When a beaker of water is heated its volume increases a little. What is happening to the particles in the liquid?

a)

They are getting bigger.

b)

They are moving slower.

c)

They are moving faster.

d)

They are getting smaller.

111.

When you place a bottle of water in the freezer its volume increases. What is happening to the particles in the liquid?

a)

They are getting bigger.

b)

They are moving slower.

c)

They are moving faster.

d)

They are getting smaller.

112.

Everything is made of...

a)

Solid

b)

Matter

c)

Gas

d)

Liquid

113.

Draw how the particles look in solid form

114.

Which state of matter is represented by the particles in the image?

a)

Solid

b)

Liquid

c)

Gas

115.

Which is a liquid?

a)
b)
c)
d)
116.

Draw how the particles look in a gaseous form

117.

What state of matter takes the shape of the container it's in and can be poured?

(a)  

118.

What is the hardest state of matter?

a)

Solid

b)

Gas

c)

Plasma

d)

Liquid

119.

When you heat up a solid, the particles....

a)

Lose Mass

b)

Slow Down

c)

Get Bigger

d)

Move Faster

120.

What is found on the periodic table?

a)

Elements

b)

Compounds

c)

Mixtures

121.
____________ can join to form molecules.
a)
atom
b)
molecule
c)
electron
122.

What is a mixture?

a)

elements chemically combined

b)

a physical combination of substances

c)

it is found on the Periodic Table

d)

it is made of any chemicals

123.

__ is a pure substance containing two or more kinds of atoms.

a)

Element

b)

compound

c)

mixture

d)

solution

124.

Below is a list of some substances and their symbols.

Oxygen O

Sodium Chloride NaCl

Gold Au

Neon Ne

How many of these substances are an example of an element?

a)

1

b)

2

c)

3

d)

4

125.

Which of the following represents an element?

a)

H2O

b)

HCl

c)

NaCl

d)

Au

e)

CaCO3

126.

Which of the following substance is NOT a compound?

a)

Carbon dioxide

b)

Hydrogen

c)

Salt

d)

Sugar

127.

What is the difference between an atom and a molecule?

a)

Molecules are groups of atoms held together physically

b)

Molecules are groups of atoms held together chemically

c)

Molecules are mixtures

d)

Molecules are only found in the gas state of matter, while atoms can form solids, liquids, and gasses

128.

What is a difference between molecules and crystals?

a)

Only molecules contain bonded atoms

b)

Only crystals have a regular arrangement of atoms or molecules bonded to each other

c)

Only crystals contain chemical bonds in their structure

d)

Only molecules have an ordered and repeating structure

129.

This picture represents which of the following?

a)

element

b)

compound

130.

How many elements are there in CuSO4?

a)

1

b)

2

c)

3

d)

4

e)

5

131.

Chlorine (Cl₂) is used in the preparation of bleach, a chemical used for cleaning, disinfecting, and removing color. What type of matter is Chlorine?

a)

Element

b)

Compound

c)

Mixture

d)

Solution

132.

Sodium bicarbonate (commonly known as baking soda) has the chemical formula NaHCO₃. How many different elements (types of atoms) does this compound has?

a)

3 (Sodium, Hydrogen and Oxygen)

b)

4 (Sodium, Hydrogen, Carbon, and Oxygen)

c)

5 (Nitrogen, Aluminum, Hydrogen, Carbon, and Oxygen)

d)

3 (Sodium, Hydrogen and Carbon trioxide)

133.

Sodium bicarbonate (commonly known as baking soda) has the chemical formula NaHCO₃. How many ATOMS in total are in the molecule?

a)

7

b)

8

c)

4

d)

6

134.

What is the formula for this compound?

a)

HCl₃

b)

CHCl₃

c)

C₃HCl

d)

3HCCl

135.

Which of the following represents the structure of a crystalline solid?

a)

The model on the left

b)

The model on the right

136.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
137.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
138.

This picture represents:

a)

only one Element

b)

only one Compound

c)

Mixture of Elements

d)

Mixture of Compounds

139.
What type of substance is shown in the picture? 
a)
element
b)
compound
c)
mixture 
140.

This is an example of

a)

an extended structure / crystal compound

b)

a molecule of a compound

c)

a molecule of an element

d)

an extended structure / crystal element

141.

This is showing

a)

molecules of an element

b)

extended structure / crystal compound

c)

molecules of a compound

d)

extended structure / crystal element

142.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
d)

atom

143.

Pure Substances

a)

Are only made of one type of atom

b)

Have the same properties throughout

c)

Can never be broken down into something simpler

d)

Are only made of molecules

144.

substance that cannot be broken down into a simpler substance

a)

chemical

b)

element

c)

compound

d)

mixture

145.

basic particle from which all elements are made

a)

atom

b)

molecule

c)

element

d)

compound

146.

force of attraction between atoms

a)

atom bond

b)

compound

c)

chemical bond

d)

molecule

147.

group of two or more atoms held together by chemical bonds

a)

atom

b)

molecule

c)

chemical bond

d)

compound

148.

substance made of two or more elements that are chemically combined is a set ratio

a)

compound

b)

chemical formula

c)

molecule

d)

atom

149.

What shows the elements in the compound and the ratio of atoms

a)

chemical formula

b)

chemical bond

c)

molecule

d)

mixture

150.

What holds the hydrogen and oxygen atoms together in a water molecule?

a)

formulas

b)

compounds

c)

mixtures

d)

chemical bonds

151.

How many atoms are in NH3?

a)

2

b)

3

c)

4

d)

5

152.

How many atoms of Oxygen are in O2?

a)

1

b)

2

c)

3

d)

4

153.

A _________ is made of two or more substances that are together in the same place but their atoms are NOT chemically bonded.

a)

compound

b)

mixture

c)

substance

d)

filtration

154.

A type of mixture where you can see the different parts and they can easily be separated into their different parts.

a)

atomic mixture

b)

Compound mixture

c)

Heterogeneous mixture

d)

Homogeneous mixture

155.

A type of mixture that you can't see the different parts.

a)

Homogeneous mixture

b)

Heterogeneous mixture

c)

Compound

d)

distillation

156.

Iron objects can be separated from a mixture using a magnet.

a)

evaporation

b)

magnetic attraction

c)

distillation

d)

filtration

157.

Solids can be separated from liquids by pouring the mixture through a filter.

a)

magnetic attraction

b)

evaporation

c)

filtration

d)

distillation

158.

Liquids can be separated from each other by heating them up to the temperature at which one of the liquids boils. The liquid boils into a gas. Then the gas cools, forming the separated liquid.

a)

evaporation

b)

distillation

c)

magnetic attraction

d)

filtration

159.

When left in the open air, liquid solutions can change to gas, leaving solid components behind.

a)

Evaporation

b)

distillation

c)

filtration

d)

magnetic attraction

160.

Heterogeneous and Homogeneous are two types of what?

a)

compounds

b)

elements

c)

mixtures

d)

atoms

161.

substance that cannot be broken down into a simpler substance

a)

chemical

b)

element

c)

compound

d)

mixture

162.

basic particle from which all elements are made

a)

atom

b)

molecule

c)

element

d)

compound

163.

force of attraction between atoms

a)

atom bond

b)

compound

c)

chemical bond

d)

molecule

164.

group of two or more atoms held together by chemical bonds

a)

atom

b)

molecule

c)

chemical bond

d)

compound

165.

substance made of two or more elements that are chemically combined is a set ratio

a)

compound

b)

chemical formula

c)

molecule

d)

atom

166.

What shows the elements in the compound and the ratio of atoms

a)

chemical formula

b)

chemical bond

c)

molecule

d)

mixture

167.

What holds the hydrogen and oxygen atoms together in a water molecule?

a)

formulas

b)

compounds

c)

mixtures

d)

chemical bonds

168.

How many atoms are in NH3?

a)

2

b)

3

c)

4

d)

5

169.

How many atoms of Oxygen are in O2?

a)

1

b)

2

c)

3

d)

4

170.

A _________ is made of two or more substances that are together in the same place but their atoms are NOT chemically bonded.

a)

compound

b)

mixture

c)

substance

d)

filtration

171.

A type of mixture where you can see the different parts and they can easily be separated into their different parts.

a)

atomic mixture

b)

Compound mixture

c)

Heterogeneous mixture

d)

Homogeneous mixture

172.

A type of mixture that you can't see the different parts.

a)

Homogeneous mixture

b)

Heterogeneous mixture

c)

Compound

d)

distillation

173.

Iron objects can be separated from a mixture using a magnet.

a)

evaporation

b)

magnetic attraction

c)

distillation

d)

filtration

174.

Solids can be separated from liquids by pouring the mixture through a filter.

a)

magnetic attraction

b)

evaporation

c)

filtration

d)

distillation

175.

Liquids can be separated from each other by heating them up to the temperature at which one of the liquids boils. The liquid boils into a gas. Then the gas cools, forming the separated liquid.

a)

evaporation

b)

distillation

c)

magnetic attraction

d)

filtration

176.

When left in the open air, liquid solutions can change to gas, leaving solid components behind.

a)

Evaporation

b)

distillation

c)

filtration

d)

magnetic attraction

177.

Heterogeneous and Homogeneous are two types of what?

a)

compounds

b)

elements

c)

mixtures

d)

atoms

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