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Unit 2 Quiz Review

Total questions: 118

Worksheet time: 3hrs 51mins

Name
Class
Date
1.

Elemental mercury is a shiny, silver-colored, dense liquid that flows easily. Are these characteristics of mercury physical or chemical properties? Explain.

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2.

If liquid elemental mercury is heated in oxygen, the volume of the shiny liquid decreases and a reddish-orange solid forms in its place. Do these characteristics represent a physical or a chemical change? Explain.

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3.

What characterizes a substance as an element? How many elements are there?

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4.

What is a compound? What are compounds composed of? What is true about the composition of a compound, no matter where we happen to find the compound?

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5.

What does it mean to say that a solution is a homogeneous mixture?

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6.

Give three examples of heterogeneous mixtures and three examples of solutions that you might use in everyday life.

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7.

Describe how the process of distillation could be used to separate a solution into its component substances. Give an example.

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8.

Describe how the process of filtration could be used to separate a mixture into its components. Give an example.

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9.

What is the difference between a chemical and a physical property? Give examples of each.

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10.

What is the difference between a chemical and a physical change? Give examples of each.

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11.

What is a mixture? How do mixtures differ from pure substances?

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12.

What are some of the techniques by which mixtures can be resolved into their components?

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13.

Explain how solute, solvent and solution relate to one another.

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14.

If 20 grams of Al reacts with 200 grams of Br to form AlBr3, and no Al is left after the reaction, but 23 grams of Br remain unreacted, how many grams of AlBr3 were formed? a. Create a reaction equation to represent the reaction. b. How many grams of AlBr3 were formed? Show work.

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15.

In the boxes below (all the same size), rank the densities of the boxes using >, < or =. Explain your ranking.

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16.

A cup of gold colored metal beads was measured to have a mass of 425 g. By water displacement the beads were calculated to be 48.0 mL. Given the following densities, identify the metal: gold = 19.4 g/cm³, copper = 8.86 g/cm³, bronze = 9.87 g/cm³. Explain.

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17.

The density of magnesium is 1.74 g/cm³, and the density of platinum is 21.45 g/cm³. a. What volume of magnesium would have the same mass as 1.82 cm³ of platinum? b. Draw a particle diagram to support your answer.

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18.

Calculate the molar mass of Ba(OH)₂.

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19.

How many significant figures are in the following?

a)

0.00203

1.

3

b)

500

2.

1

c)

43.020

3.

5

20.
Is a firefly lighting up a physical or chemical change?
a)
Physical
b)
Chemical
21.
Is water melting a physical or chemical change?
a)
Physical
b)
Chemical
22.
Is salt dissolving in water a physical or chemical change?
a)
Physical
b)
Chemical
23.
Is digesting your food a physical or chemical change?
a)
Physical
b)
Chemical
24.
Is a burning candle a physical or chemical change?
a)
Physical
b)
Chemical
25.
Is a tree sprouting a physical or chemical change?
a)
Physical
b)
Chemical
26.
Is getting a tan a physical or chemical change?
a)
Physical
b)
Chemical
27.
Is a car using fuel a physical or chemical change?
a)
Physical
b)
Chemical
28.
Is sour milk a physical or chemical change?
a)
Physical
b)
Chemical
29.
Is bending copper wire a physical or chemical change?
a)
Physical
b)
Chemical
30.
Is steam a physical or chemical change?
a)
Physical
b)
Chemical
31.
Which type of water is a pure substance?
a)
tap water
b)
distilled
c)
neither
d)
both
32.
What type of a substance is this?
a)
homogeneous mixture
b)
heterogeneous mixture
c)
element
d)
compound
33.
A substance's ABILITY to change into a new substance is a
a)
physical property of matter
b)
chemical property of matter
c)
physical change in matter
d)
chemical change in matter
34.
Ice melting and glass breaking are examples of a
a)
physical property
b)
chemical property
c)
physical change
d)
chemical change
35.
The formation of a precipitate is evidence that a _________________ has taken place.
a)
physical property
b)
chemical property
c)
physical change
d)
chemical change
36.
Water vaporizing is evidence that a ______________ has taken place.
a)
physical property
b)
chemical property
c)
physical change
d)
chemical change
37.
The formation of gas bubbles is evidence that a _________________ has taken place.
a)
physical property
b)
chemical property
c)
physical change
d)
chemical change
38.
In which state of matter do particles move freely because they have enough energy to overcome attractive forces of particles (but NOT the forces that hold the atoms together)?
a)
solids
b)
liquids
c)
gases
d)
plasma
39.
In which state of matter do particles vibrate in place because they do not have enough energy to overcome attractive forces?
a)
solid
b)
liquid
c)
gas
d)
plasma
40.
Which shows the movement of particles when a substance vaporizes?
a)
a to b
b)
b to c
c)
b to a
d)
c to b
41.
Which of the following is a chemical property of water?
a)
Reacts with pure sodium.
b)
Boils at 100 oC.
c)
Dissolves sugar easily. 
d)
Has a density of 1 gm/mL
42.
Freezing Juice?
a)
Physical Change
b)
Chemical Change
43.
A mixture is the result of a physical change because...
a)
The parts can be separated
b)
A new substance is made
c)
There is a chemical reaction
d)
One part of the mixture disappears
44.
Example for physical property
a)
odor
b)
burns in air
c)
reacts with water to create hydrogen gas
d)
rust
45.
Example for chemical property
a)
malleability
b)
texture
c)
combustion
d)
sour taste
46.

What type of mixture is this?

a)

homogenous mixture

b)

chemical

c)

heterogeneous mixture

d)

solid mixture

47.
This picture represents: 
a)
Element
b)
Compound
c)
Mixture of Elements
d)
Mixture of Compounds
48.

Carbon is an example of:

a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

49.

Color, shape, size

a)

Chemical

b)

Physical

50.

Density

a)

Physical

b)

Chemical

51.

Luster

a)

Chemical

b)

Physical

52.
What is matter?
a)
a pure substance
b)
anything that occupies space and possesses mass
c)
an element
d)
a compound
53.

A white tablet is dropped into water. The water becomes cloudy and bubbles are produced. What type of change has occurred?

a)

Physical change

b)

Chemical change

c)

No change

54.

Jack leaves solid butter near a warm surface. When Jack returns, the butter has turned into a liquid. Jack's friend Elijah insists this is a chemical change. Is Elijah right?

a)

no, because no new matter was formed

b)

yes, because the matter changed states

c)

no, because the butter didn’t have enough time to go through a chemical change

d)

yes, because melted butter is a new type of matter

55.

In YOUR words, what is a chemical reaction? I want to know what YOU think, not google! There is no wrong answer - its what YOU think.

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56.

Is bending copper wire a physical or chemical change?

a)

Physical

b)

Chemical

57.
Is a car using fuel a physical or chemical change?
a)
Physical
b)
Chemical
58.
Is melting iron a physical or chemical change?
a)
Physical
b)
Chemical
59.
Is a burning candle a physical or chemical change?
a)
Physical
b)
Chemical
60.
Is digesting your food a physical or chemical change?
a)
Physical
b)
Chemical
61.
Is salt dissolving in water a physical or chemical change?
a)
Physical
b)
Chemical
62.

Is water melting a physical or chemical change?

a)

Physical

b)

Chemical

63.

Determine the molar mass of NaCl. SHOW WORK!!!

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64.

Determine the molar mass of ZnCl₂. SHOW WORK!!!

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65.

Determine the molar mass of NaOH. SHOW WORK!!!

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66.

Determine the molar mass of NaHCO₃. SHOW WORK!!!

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67.

Determine the molar mass of CuSO₄. SHOW WORK!!!

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68.

Determine the molar mass of C₆H₆. SHOW WORK!!!

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69.

Determine the molar mass of Ba(OH)₂. SHOW WORK!!!

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70.

Determine the molar mass of HC₂H₃O₂. SHOW WORK!!!

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71.

Determine the molar mass of KClO₃. SHOW WORK!!!

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72.

Determine the molar mass of C₁₂H₂₂O₁₁. SHOW WORK!!!

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73.

Determine the molar mass of Ca(HCO₃)₂. SHOW WORK!!!

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74.

Determine the molar mass of (NH₄)₃PO₄. SHOW WORK!!!

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75.

Which of the following is the correct definition of density?

a)

The amount of stuff in an object

b)

The amount of space an object takes up

c)

A measure of the force of gravity on an object

d)

The amount of matter (mass) packed into a space (object)

76.

Which object has the highest density in this picture?

a)

A

b)

B

c)

C

77.

Which object has the lowest density in this picture?

a)

A

b)

B

c)

C

78.

Which of the following is an example of an object with a low density?

a)

Pillow

b)

Bowling Ball

c)

Brick

79.

Which of the following is an example of an object with a high density?

a)

Pillow

b)

Bowling Ball

c)

Beach Ball

80.

Which of the following is the correct units for density?

a)

grams (g)

b)

Newtons (N)

c)

cm3

d)

g/cm3

81.

What is the density of an object if it has a mass of 6g and a volume of 3cm3? (Hint: Density = mass/volume)

a)

6 g/cm3

b)

3 g/cm3

c)

2 g/cm3

d)

1/3 g/cm3

82.

What is the density of an object with a mass of 3g and a volume of 1cm3? (Hint: Density = mass / volume)

a)

1/3 g/cm3

b)

3 g/cm

c)

3 g/cm3

83.

Which substance is the most dense in this picture?

a)

Vegetable Oil

b)

Dish Soap

c)

Honey

d)

Corn Syrup

84.
What two types of measurements make up DENSITY? 
a)
Mass and Volume
b)
Temperature and Mass
c)
Grams and Centimeters
d)
Volume and Weight
85.
Look at this image.  Which object has the LOWEST density in water? How? 
a)
The Ping Pong Ball because it floats to the top 
b)
The bolt because it has sunk to the bottom
c)
The soda cap because it is not just full of air like the Ping Pong ball
86.
Jack has a rock. The rock has a mass of 14g and a volume of 2cm3. What is the density of the rock?
a)
7 mL
b)
7 g/cm3
c)
28 g/cm3
d)
1/7 g/cm3
87.
Frank has an eraser. It has a mass of 4g, and a volume of 2cm3. What is its density?
a)
8 g/cm3
b)
2 g/cm3
c)
1/2 g/cm3
d)
24 g/cm3
88.
What units are used to measure mass?
a)
g
b)
cm3
c)
g/cm3
d)
cm3/g
89.
What is the formula for density?
a)
density = mass x volume
b)
density = mass / volume
c)
density = mass + volume
d)
density = mass - volume
90.

Rank the objects from MOST dense to LEAST dense.

a)

left

b)

right

c)

center

1)
2)
3)
91.
Put the liquids in order from most dense to least dense?
a)

4

b)

3

c)

2

d)

1

1)
2)
3)
4)
92.

a pure substance that cannot be broken down into another substance (examples are H, O, C)

a)

atom

b)

molecule

c)

element

d)

compound

93.

a characteristic that can be observed without changing into another substance

a)

chemical property

b)

substance

c)

physical property

d)

mixture

94.

Match the term with its definition

a)

a pure substance that consists of one type of atom.

1.

elment

b)

a pure substance that consists of multiple types of atoms chemically joined.

2.

compound

c)

contains two or more different substances physically joined together

3.

mixture

95.
Question Image

Match the following

a)
1.

element

b)
2.

compound

c)
3.

mixture of 2 elements

d)
4.

mixture of 2 compounds

96.
A bicycle sits out in the rain for a year and rusts is a:
a)
Physical Change
b)
Chemical Change
97.
a)
Element
b)
Compound
c)
Mixture
98.
a)
Element
b)
Compound
c)
Mixture
99.
a)
Element
b)
Compound
c)
Mixture
100.

What type of change is this?

a)

Chemical

b)

Melting

c)

Evaporation

d)

Condensation

e)

Sublimation

101.

Which of the following is an example of a physical property?

a)

Reactivity with other chemicals

b)

Flammability

c)

Toxicity

d)

Color

102.

What is an example of a physical property?

a)

Silver is shiny

b)

Alcohols are flammable

c)

Alkali metals are reactive with water

d)

Acids are sometimes corrosive

103.

______________________ can only be recognized when substances react or do not react chemically with one another.

a)

Physical properties

b)

Chemical properties

c)

Flammable properties

d)

Colorful properties

104.

____________is a characteristic that can be observed or measured without changing the sample’s composition.

a)

physical property

b)

chemical property

105.
Is milk going sour a physical or chemical change?
a)
Physical 
b)
Chemical
106.
Is copper tarnishing a physical or chemical change?
a)
Physical 
b)
Chemical
107.
Is mold growing on cheese a physical or chemical change?
a)
Physical 
b)
Chemical
108.
Is burning wood a chemical or physical change?
a)
chemical
b)
physical
109.
What is an example of a Chemical change?
a)
Ripped paper 
b)
boiled egg
c)
cracked egg
d)
sugar in water
110.

Flammability of a substance is a ​ (a)  

Choose from the below words
Chemical Property
Physical Property
Solution
111.

The study of matter and changes it undergoes

(a)  

112.

The amount of space an object takes up

(a)  

113.

The amount of matter in an object

(a)  

114.

Produces a change in properties

(a)  

115.

Match the following

a)

2Al

1.

Coefficient

b)

H₂O

2.

Subscript

c)

CP

3.

Chemical Formula

d)

Carbon=C

4.

Chemical Symbol

e)

→

5.

yield

116.

Match the following

a)

Uses heat/energy

1.

Endothermic

b)

Gives off heat/energy

2.

Exothermic

c)

an explanation for some phenomenon that is based on observation, experimentation, and reasoning

3.

Theory

d)

a summary of many experimental results and observations, a law tells how things work

4.

Scientific Law

e)

Observations that we have organized into a table graph or chart

5.

Data

117.

Match the following

a)

substance that dissolves into a solution

1.

solute

b)

a substance that dissolves a solute

2.

solevent

c)

a uniform mixture

3.

solution

d)

material remaining after distillation or evaporation

4.

residue

e)

material usually liquid that has passed through a filter

5.

filtrate

118.

Formation of a solid in a solution

(a)  

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