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4.2 Chemistry Unit Review - Long version

Total questions: 120

Worksheet time: 2hrs 44mins

Name
Class
Date
1.

Which elements are shiny?

a)

metals only

b)

nonmetals only

c)

metals and nonmetals

d)

metals and MAYBE metalloids

2.

Which elements are to the right of the zig zag?

a)

metals

b)

nonmetals

c)

metalloids

3.

You discovered in the lab that silicon is:

a)

metal

b)

metalloid

c)

nonmetal

4.

Sulfur is considered:

a)

malleable

b)

brittle

c)

ductile

d)

a good conductor

5.

How did you find out if an element is a good conductor?

a)

it lit up a light bulb

b)

hit it with a hammer

c)

bubbled in the presence of acid

d)

turned black

6.

ductile means...

a)

can be made into wire

b)

can be bent or hammered

c)

can light up a light bulb

d)

it's shiny

7.

copper can be used to make statues like the statue of liberty

a)

therefore copper is malleable

b)

therefore copper is ductile

c)

therefore copper is shiny

d)

therefore copper is a conductor

8.

Which of the metals was the most reactive?

a)

magnesium

b)

zinc

c)

copper

d)

aluminum

9.

Which of these was NOT a conductor?

a)

sulfur

b)

magnesium

c)

zinc

d)

aluminum

10.

Substances that can be hammered into thin sheets are:

a)

metals

b)

nonmetals

c)

both metals and nonmetals

11.

Which elements are to the LEFT of the zigzag?

a)

metals

b)

nonmetals

c)

metalloids

12.

Which elements are colored red?

a)

nonmetals

b)

metals

c)

metalloids

13.

The darkest shaded area on the periodic table is known as-

a)

Metals

b)

Nonmetals

c)

Metalloids

d)

Rare Earth Elements

14.

The lightest shaded area on the periodic table is known as-

a)

Metals

b)

Nonmetals

c)

Metalloids

d)

Rare Earth Metals

15.

The gray staircase is known as-

a)

Metals

b)

Nonmetals

c)

Metalloids

d)

Rare Earth Metals

16.

The substances listed on the right side of a chemical equation are the

a)

Yields

b)

Reactants

c)

Products

d)

Precipitates

17.

CaCO3 represents a chemical

a)

Symbol

b)

Formula

c)

Subscript

d)

Reaction

18.

How many Oxygen (O) atoms are in 2C2HO8Cl2

a)

2

b)

16

c)

8

d)

5

19.

How many Hydrogen (H) atoms are in NH3O5

a)

3

b)

4

c)

5

d)

1

20.

How many elements are in C6H12O6?

a)

1

b)

2

c)

3

d)

4

21.

------ are poor conductors of heat and electricity

a)

Transition metals

b)

All metals

c)

Non metals

d)

Copper

22.

Boron is an example of

a)

Metalloid

b)

Metal

c)

Non metal

d)

Inert gas

23.

Some elements in this group are synthetic and radioactive

a)

Transition Metals

b)

Rare earth metals

c)

Alkaline earth metals

d)

Alkali metals

24.

Which of the following is a Nonmetal?

a)

Sulfur

b)

Gold

c)

Iron

d)

Calcium

25.

The is family has properties of both metals and nonmetals.

a)

Alkali

b)

Halogens

c)

Nonmetals

d)

Metalloids

26.

This type of element is dull, brittle solids and gases, insulators, poor conductors of heat and electricity, as well as having low melting points.

a)

metals

b)

metalloids

c)

nonmetals

27.

Sulfur is a...

a)

metal

b)

nonmetal

c)

metalloid

28.
Which is a metal?
a)
Rhodium (Rh)
b)
Arsenic (As)
c)
Hydrogen
d)
Argon (Ar)
29.

Which of the following best describes metalloids?

a)

Elements that are always gases

b)

Elements that have properties of both metals and nonmetals

c)

Elements that are only found in compounds

d)

Elements that are always shiny and malleable

30.

What does luster describe?

a)

The ability of a substance to conduct electricity

b)

The way the surface of a substance shines or reflects light

c)

The ability of a material to be reshaped

d)

The arrangement of atoms in a molecule

31.

Scandium is silver, metallic, soft and ductile when mixed with other metals, never found in large amounts, and found mixed with other elements. Used in alloys for sports equipment, aerospace applications, and fuel cells. Based on these properties, scandium would be classified as a– 

a)

Metal

b)

Metalloid

c)

Nonmeta

d)

Rare Earth Element

32.

Rare earth elements are found in small amounts, mixed with other elements

a)

True

b)

False

33.

Rare earth elements are used in many technologies, such as smartphones, digital cameras, and flat-screen TVs

a)

True

b)

False

34.

Rare earth elements are found in the lanthanides row of the Periodic Table except for the elements scandium and yttrium

a)

True

b)

False

35.

Which one is the coefficient 4H2O?

a)

4

b)

H

c)

2

d)

O

36.

How many atoms are there TOTAL in H2SO4

a)

6

b)

5

c)

7

37.

A subscript is the small number below the element symbol that tells the number of _______ of that element.

a)

atoms

b)

protons

c)

valence electrons

38.

A capital letter or combination of a capital letter and a small letter that is used to represent an element is called a(n) ________

a)

element

b)

subscript

c)

coefficient

39.

Which one is the subscript 4H2O

a)

4

b)

H

c)

2

d)

O

40.

How many Hydrogen atoms are in 4H2O?

a)

8

b)

12

c)

4

41.
How many Hydrogen are in 4H2O?
a)
6
b)
8
c)
2
d)
4
42.
How many Magnesium are in 10MgCl2?
a)
10
b)
5
c)
20
43.
2H2 + O2 ----> 2H2O What is the product?
a)
------>
b)
2H2O
c)
2H2+ O2
44.
How many O's are in Al₂(SO₄)₃
a)
4
b)
12
c)
7
d)
24
45.
What is a coefficient?
a)
The small number on the right of the chemical symbol.
b)
The large number to the left of a formula.
46.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
47.
The law of conservation of matter states that
a)
chemical reactions change matter.
b)
in chemical reactions, the identity of reactants and products is conserved.
c)
atoms are neither created nor destroyed in chemical reactions.
d)
a chemical equation must be balanced.
48.
Why is the following chemical equation not balanced?
H2 + O2 --> H2O
a)
each side of the equation has a different number of oxygen atoms
b)
each side of the equation has a different number of hydrogen atoms
c)
each side has the same mass
49.
Is the following equation balanced or unbalanced?
Fe + S --> FeS
a)
balanced
b)
unbalanced
50.
What is the part of the chemical equation in green called? 
Fe + S --> FeS
a)
products
b)
reactants
c)
yield
d)
chemical formula
51.
What does the Law of Conservation of Mass state?
a)
Matter cannot be gained or lost in a chemical reaction.
b)
Matter can only be lost in a chemical reaction.
c)
Matter can only be gained in a chemical reaction.
d)
Matter can be gained and lost in a chemical reaction. 
52.
What is the left part of a chemical equation called?
2H2 + O2 --> 2H2O
a)
Reactants
b)
Products 
c)
Yields 
d)
Chemical Equation 
53.
What is the right part of a chemical equation called...
2H2 + O2 --> 2H2O
a)
Reactants
b)
Products 
c)
Yields 
d)
Chemical Equation 
54.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
55.

Which of the following equations follows the law of conservation of mass?

a)

2Na + Cl --> NaCl

b)

C2H4 + 3O2 --> 2CO2 + 2H2O

c)

C + 4H2 --> CH4

d)

3H2O --> 3H2 +3O2

56.

Which of the following would be evidence that a chemical change took place?

Click all that apply.

a)

A solid melts at 200oC

b)

A precipitate is formed

c)

A rock breaks in half

d)

Sugar Dissolves in Kool-Aid

e)

Light and heat are produced when a log burns

57.

Occur when one or more substances are converted to one or more different substances. When this happens, we can observe chemical changes.

a)

Chemical Equations

b)

Chemical Reactions

c)

Products

d)

Reactants

58.

Number of oxygen atoms on the product side.

a)

2

b)

12

c)

8

d)

18

59.

Number of Hydrogen atoms on the product side.

a)

12

b)

1

c)

6

d)

18

60.

How many oxygen atoms on the reactant side?

a)

1

b)

2

c)

3

d)

4

61.

What are the reactants of the chemical reaction shown in the illustration.

a)

oxygen, iron and water

b)

oxygen and iron

c)

water and iron

d)

rust

62.

Is this equation balanced?

a)

Yes

b)

No

63.

Is this equation balanced?

a)

Yes

b)

No

64.

Is this equation balanced?

a)

Yes

b)

No

65.

What is the TOTAL number of atoms in the chemical formula C12H22O11C_{12}H_{22}O_{11}  ?

a)

12

b)

22

c)

11

d)

45

66.

Which of the following substances CANNOT be broken down into simpler substance? ?

a)

NaNa  

b)

H2OH_2O  

c)

C6H12O6C_6H_{12}O_6  

d)

COCO  

67.

How does a balanced chemical equation satisfy the Law of Conservation of Mass?

a)

During a chemical reaction, matter is destroyed.

b)

During a chemical reaction, the total number of atoms increases.

c)

 During a chemical reaction, one or more new substances are formed.

d)

During a chemical reaction, the total amount of matter stays the same.

68.

What happens to the total mass of the substances after a chemical reaction?

a)

It decreases.

b)

It increases.

c)

 It remains the same.

d)

It increases then decreases.

69.

Jin bought a heat pack that weighs 15 g. He shook it so it would release heat to warm his hands. The release of heat indicates a chemical reaction took place in a closed system. What would be the mass of the heat pack after the chemical reaction?

a)

5 g

b)

10 g

c)

12 g

d)

15 g

70.
If reaction starts with 20g of reactants it should produce 
a)
a total of 40g of products
b)
a total of 10g of products
c)
a total of 80 g of products
d)
a total of 20g of products
71.
Maria fills a bowl with 200 g of water. She puts the bowl of water in the freezer, and the water freezes. Which will most likely be the mass of the frozen water?
a)
50 g
b)
100 g
c)
200 g
d)
400 g
72.
If reaction starts with 20g of reactants it should produce 
a)
a total of 40g of products
b)
a total of 10g of products
c)
a total of 80 g of products
d)
a total of 20g of products
73.
What will weigh more when a chemical change is complete?  The reactants before the chemical reaction, or the product after the reaction is complete?
a)
They both will weigh the same
b)
The product always weighs more than the reactant
c)
The reactant will weigh more than the product
d)
They both will loose mass after the reaction
74.

4 grams of hydrogen and 32 grams of oxygen will combine to form:

a)

36 grams of water

b)

28 grams of hydroxide

c)

32 grams of oxygen

d)

36 grams of deuterium

75.
The mass after a physical change, such as ice melting into water, stays the same
a)
True
b)
False
76.
Is water melting a physical or chemical change?
a)
Physical
b)
Chemical
77.
Is digesting your food a physical or chemical change?
a)
Physical
b)
Chemical
78.
Is a burning candle a physical or chemical change?
a)
Physical
b)
Chemical
79.
Which of the following is NOT an example of a physical change?
a)
crumpled paper
b)
pencil sharpening
c)
shrunken clothing
d)
rust
80.
Freezing Juice?
a)
Physical Change
b)
Chemical Change
81.
A change where one or more new substances are created.
a)
Physical Change 
b)
Chemical Change 
82.
Fizzing, foaming, and burning are all examples of
a)
Chemical change
b)
Physical change
83.
When you break a cracker into pieces it is a...
a)
Chemical change
b)
Physical change
84.
Which of the following is NOT an example of chemical change?
a)
sour milk
b)
burning wood
c)
breaking a pencil
d)
rust
85.
Ripping up paper ...
a)
Chemical Change
b)
Physical Change
86.
A change in phase ...
a)
Chemical Change
b)
Physical Change
87.
Bubbles form when two or more substances are combined ...
a)
Chemical Change
b)
Physical Change
88.
An explosion occurs ...
a)
Chemical Change
b)
Physical Change
89.
Is wood burning a physical or chemical change?
a)
Physical 
b)
Chemical
90.
Is milk going sour a physical or chemical change?
a)
Physical 
b)
Chemical
91.

Surface tension is the property of water in which...

a)

water molecules at the surface tend to stick together.

b)

water spills easily.

c)

water tends to be see-through.

92.

Refer to the picture of water sticking to a leaf; this is occurring because of:

a)

Adhesion

b)

Cohesion

93.

Describe COHESION.

a)

Water molecules attracted to other substances.

b)

Water molecules climbing upwards against the force of gravity.

c)

Water molecules dissolving many substances because of its polarity.

d)

Water molecules attracted to other water molecules.

94.
What word describes when water is attracted to other substances?
a)
cohesion
b)
adhesion
c)
capillary action
d)
surface tension
95.
tendency of molecules of the same kind to stick to one another
a)
cohesion
b)
adhesion
c)
solution
d)
polar molecule
96.
Water droplets take a spherical shape (as pictured) because of ____________
a)
adhesion
b)
cohesion
c)
capillary action
d)
solubility
97.
Water beads up on the surface of a penny because of this property.
a)
Adhesion
b)
High Surface Tension
c)
Universal Solvent
d)
Changes in Density
98.
Which characteristic of water will allow a paperclip to remain floating on water when the paperclip is gently placed on top of the water?
a)
adhesion
b)
surface tension
c)
solvent properties
d)
nonpolar
99.

Water's ability to stick to glass is

a)

adhesion

b)

cohesion

c)

surface tention

d)

capillary action

100.
The pH scale is a range from:
a)
1-7
b)
0-14
c)
1-5
d)

1-10

101.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
102.
A(n) _______ is a substance with a pH greater than 7.
a)
Base
b)
Acid
c)
Buffer
d)
Water
103.
What is the only substance with a neutral pH of 7?
a)
Milk
b)
Orange Juice
c)
Water
d)
Blood
104.
Complete the sentence.
A substance that is more basic has a _____ pH than a substance that is acidic.
a)
lower
b)
higher
c)
the same
d)
none of the above
105.

In a test of pH levels, a baking soda has a pH of 9 and bleach has a pH of 12. What is true about there relationship?

a)

Both of the solution are Bases

b)

Both of the solution are Acids

c)

The Baking soda is an acid and the Bleach is a base

d)

The baking soda is a base and the Bleach is an Acid.

106.
On the pH scale higher numbers indicate
a)
acids
b)
bases
107.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
108.
Bleach is a strong base, what is the pH level of bleach?
a)
13
b)
14
c)
1
d)
2
109.

Which of the following is the strongest acid?

a)

1

b)

5

c)

3

d)

8

110.

Which of the following is the strongest base?

a)

4

b)

14

c)

7

d)

15

111.

An acidic solution has a

a)

higher concentration of hydrogen ions than hydroxide ions

b)

higher concentration of hydroxide ions than hydrogen ions

c)

equal concentration of hydrogen ions and hydroxide ions

112.

What is matter?

a)

Anything that has mass and takes up space

b)

Velocity divided by time

c)

The amount of space an object takes up

d)

The weight of an object

113.

Which of the following would be considered a Homogeneous mixture?

a)

Sweet Tea

b)

Vegetable soup

c)

Caesar salad

d)

Mud

114.

Which of the following would be considered a Heterogeneous mixture?

a)

Trail Mix

b)

Oxygen

c)

Air

d)

Pure, Distilled Water

115.

What is the definition of a mixture?

a)

2+ different substances physically combined

b)

2+ different elements chemically combined

c)

matter with a uniform and definite composition

116.

Which of the following are examples of ELEMENTS?


Select all that apply!

a)

H2O

b)

O2

c)

Au

d)

Fe

e)

Trail Mix

117.

Which of the following are examples of COMPOUNDS?


Select all that apply!

a)

H2O

b)

O2

c)

Blood

d)

Fe

e)

C6H12O6

118.

Mixture or Pure Substance?

a)

Mixture

b)

Pure Substance

119.

Mixture or Pure Substance?

a)

Mixture

b)

Pure Substance

120.

Mixture or Pure Substance?

a)

Mixture

b)

Pure Substance

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