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Unit 1 Review

Total questions: 149

Worksheet time: 2hrs 10mins

Name
Class
Date
1.

What is 78.5 rounded to one significant figure?

a)

79

b)

78.5

c)

70

d)

80

2.

Round 0.010229 to four significant figures

a)

1022

b)

1023

c)

0.01023

d)

0.01022

3.

What is 0.658 rounded to 1 significant figure?

a)

0

b)

0.66

c)

0.7

d)

0.658

4.
Round 52689 to 3 significant figures.
a)
526
b)
527
c)
52600
d)
52700
5.
How many significant figures: 216 m
a)
1
b)
2
c)
3
d)
0
6.
How many significant figures: 2016 m
a)
1
b)
2
c)
3
d)
4
7.
How many significant figures: 4.20 cm
a)
1
b)
2
c)
3
d)
4
8.
How many significant figures: 0.001 g
a)
4
b)
3
c)
2
d)
1
9.

How many significant figures: 450 m

a)

3

b)

2

c)

1

d)

0

10.
How many sig figs are there?
0.000008
a)
1
b)
2
c)
6
d)
7
11.
How many sig figs are there?
27000000
a)
2
b)
5
c)
8
12.

How many significant figures are there in 1008 grams?

a)

1

b)

2

c)

3

d)

4

13.
Solve and give your answer with the correct number of significant figures
(12.470)(271)
a)
3366.9
b)
3.37x103
c)
3400
d)
3370
14.
Round 0.010229 to four sig figs
a)
1022
b)
1023
c)
0.01023
d)
0.01022
15.

What should you wear in science lab to be safe and protected from dangerous chemicals?

a)

Goggles

b)

Lab apron

c)

Closed toe shoes

d)

ALL OF THESE

16.

When finished working with hazardous chemicals, you should always:

a)

Treat your hands with some lotion

b)

Wash your hands with soap and water

c)

Wipe your hands on a towel only

d)

Wipe your hands on your clothes

17.

Long hair in the lab MUST be:

a)

Cut short

b)

Tied back

c)

Neatly brushed

d)

Held over a flame

18.

If you do not understand a direction, you should:

a)

Try several methods until something works

b)

Ask the teacher before proceeding

c)

Skip it and go onto the next part

d)

Mix chemicals randomly

19.

If a fire erupts, immediately:

a)

Notify the teacher

b)

Run for the fire extinguisher

c)

Throw water on the fire

d)

Open the windows

20.

Horseplay and pranks are allowed in the science lab.

a)

TRUE

b)

FALSE

21.

It is okay to eat or drink in the science lab.

a)

TRUE

b)

FALSE

22.

I should wear goggles and gloves for lab safety.

a)

TRUE

b)

FALSE

23.

If glassware breaks, I should pick it up with my hands and throw it in the trashcan.

a)

TRUE

b)

FALSE

24.

If I cut or burn myself, I don't need to tell the teacher.

a)

TRUE

b)

FALSE

25.

What should you wear in the science lab to be safe? CHECK ALL THAT APPLY.

a)

Opened toe shoes

b)

Lab coat

c)

Apron

d)

Goggles

e)

Long earrings

26.

It is safe to chew gum in the science lab.

a)

TRUE

b)

FALSE

27.
a)
beaker
b)
flask
c)
graduated cylinder
d)
test tube
28.
a)

crucible tongs

b)

beaker tongs

c)

forceps

d)

tweezers

29.
a)
glass triangle
b)
funnel
c)
stirring rod
d)
buret
30.
a)

iron ring

b)

ring stand

c)

face mask

d)

Bunsen burner stand

31.
a)
buret
b)
erlenmeyer flask
c)
graduated cylinder
d)
beaker
32.
a)
ignition tubes
b)
test tubes
c)
graduated cylinders
d)
burets
33.
a)
test tube rack
b)
test tube holder
c)
wire holder
d)
utility clamp
34.
a)
wire mesh
b)
wire gauze
c)
wire fence
d)
hot mitt
35.
Identify the equipment shown here:
a)
beaker
b)
Erlenmeyer flask
c)
Florence flask
d)
volumetric flask
36.

Identify the lab equipment in the picture.

a)

Test Tube Rack

b)

Test Tube Clamp with Spring

c)

Crucible Tongs

d)

Forceps

37.
a)

wire gauze

b)

Bunsen burner

c)

thermometer

d)

utility clamp

38.
a)

scoopula

b)

dropper

c)

crucible tongs

d)

glassware tongs

39.
Identify the primary function of the lab equipment seen in the image.
a)
Transfer small amounts of liquid
b)
Transfer large amounts of liquid
c)
Measure liquid volume
d)
Mixing liquid chemicals
40.
a)

forceps

b)

tongs

c)

thermometer

d)

scoopula

41.
a)

wash bottle

b)

mortar and pestle

c)

evaporating dish

d)

graduated cylinder

42.

Identify the equipment shown here:

a)

igniter

b)

test tube holder

c)

flame snuffer

d)

utility clamp

43.

Name the object.

a)

Test tube rack

b)

Test tube clamps

c)

Goggles

d)

Petri dish

e)

Ring stand

44.

This is a(n)_________.

a)

mortar

b)

pestle

c)

wellplate

d)

evaporating dish

45.
a)

evaporating dish

b)

watch glass

c)

mortar and pestle

d)

funnel

46.

Name this piece of lab equipment.

a)

crucible

b)

pestle

c)

mortar

d)

triangle

47.

Match the following

a)

1.

wash bottle

b)

2.

ring stand

c)

3.

pipette

d)

4.

wire gauze

e)

5.

ring clamp

48.

Convert 1 Degree Celsius to Kelvin:

a)

274.15 K

b)

- 283.15 K

c)

0 K

d)

373 K

49.

Convert a 136 Degrees Fahrenheit to Degrees Celsius:

a)

57.777 oC

b)

330 K

c)

57.5 oF

d)

220 C

50.

Convert 0 Kelvin to Degrees Celsius:

a)

- 273.15 oC

b)

- 273 K

c)

273.15 oC

d)

273 K

51.

Convert a - 194 Degrees Celsius to Degrees Fahrenheit:

a)

- 317.2 oF

b)

338.5 K

c)

- 273 oC

d)

0 oF

52.

Convert 253 Degrees Celsius to Kelvin:

a)

526.15 K

b)

625 K

c)

0 K

d)

186 K

53.

Convert 25.0 Degrees Celsius to Degrees Fahrenheit:

a)

77 oF

b)

77 oC

c)

100 oF

d)

100 oC

54.

Convert 186.5 Kelvins to Degrees Celsius:

a)

- 86.65 oC

b)

- 50 oC

c)

- 68.4 oC

d)

180 K

55.

Convert a - 317.2 Degrees Fahrenheit to Degrees Celsius:

a)

- 194 oC

b)

79 K

c)

230.9 oC

d)

- 48.2 oC

56.

Convert 150 Degrees Fahrenheit to Degrees Celsius:

a)

65.5556 oC

b)

65.5 oF

c)

338.5 oC

d)

338.5 oF

57.

Convert 212 Degrees Fahrenheit to Degrees Celsius:

a)

100 oC

b)

100 K

c)

100 oF

d)

50 oC

58.

According to the kinetic molecular theory, a gas consists of molecules in constant fixed motion.

a)

True

b)

False

59.

According to kinetic molecular theory-Gas molecules influence each other only by collision; they exert no other forces on each other.

a)

True

b)

False

60.

According to the kinetic molecular theory, all collisions between gas molecules are inelastic; all kinetic energy is lost.

a)

True

b)

False

61.

According to the kinetic molecular theory, the volume actually occupied by the molecules of a gas is negligibly small; the vast majority of the volume of the gas is empty space through which the gas molecules are moving.

a)

True

b)

False

62.

In the KMT, pressure is the force exerted against the wall of a container by the continual collision of molecules against it.

a)

True

b)

False

63.

The total kinetic energy of a collection of gas molecules is inversely proportional to the absolute temperature of the gas.

a)

True

b)

False

64.

Real gases (in real life), like to have high temperatures and low pressures. They like to be warm and free flowing.

a)

True

b)

False

65.

Ideal gases (best conditions) are light molecules such as hydrogen and helium. Heavier gases do not follow this rule.

a)

True

b)

False

66.

Real gases have attraction to other gas molecules which is opposite of the kinetic molecular theory. This way they can have a chemical reaction with each other.

a)

True

b)

False

67.

Gases like to be in very cold conditions and highly pressurized (just like you).

a)

True

b)

False

68.
state of matter with a fixed shape; does not take the shape of its container
a)
solid
b)
liquid
c)
gas
d)
water
69.
state of matter that can be poured; takes the shape of its container
a)
solid
b)
liquid
c)
gas
70.
state of matter that spreads out to completely fill its container
a)
solid
b)
liquid
c)
gas
d)
water
71.
water in gas form (moisture in the air)
a)
water vapor
b)
oxygen
c)
ice
d)
rain
72.
the temperature at which liquid water changes into solid ice
CHOOSE THE WRONG ANSWER
a)
32o F
b)
boiling point
c)
freezing point
d)
0o C
73.
the temperature at which liquid water changes into water vapor (gas)
CHOOSE THE WRONG ANSWER
a)
boiling point
b)
freezing point
c)
212o F
d)
100o C
74.

when water changes from a liquid to a gas - caused by heat

a)

evaporation

b)

condensation

c)

freezing

d)

melting

75.

when water vapor (a gas) is cooled and forms liquid water

a)

evaporation

b)

condensation

c)

freezing

d)

melting

76.

What must be done to change water from liquid to solid?

a)

Raise the temperature.

b)

Lower the temperature.

77.

What must be done to change water from solid to liquid?

a)

Raise the temperature.

b)

Lower the temperature.

78.

What must happen to water vapor (gas) to become liquid water?

a)

It must be heated.

b)

It must be cooled.

79.

What must happen for liquid water to evaporate (become a gas)?

a)

It must be heated.

b)

It must be cooled.

80.

The change of one state of matter to another is called

a)

Osmosis

b)

Phase Change

c)

Matter

d)

Energy

81.

Transition from a liquid to a gas

a)

Condensation

b)

Freezing

c)

Evaporation

d)

Melting

82.

Gas condenses to a liquid

a)

Evaporation

b)

Melting

c)

Freezing

d)

Condensation

83.

What happens to molecules when their kinetic energy increases?

a)

The molecules move slower

b)

The molecules move faster

c)

The molecules get heavier

d)

It depends on the type of molecule

84.

Three containers with the same amount of the same material are shown below. Which container has the substance with the highest amount of energy?

a)

The container on the left

b)

The middle container

c)

The container on the right

d)

All have an equal amount of energy

85.

Three containers with the same amount of the same material are shown below. Which container has the substance with the lowest amount of energy?

a)

The container on the left

b)

The middle container

c)

The container on the right

d)

All have an equal amount of energy

86.

Amy was sitting outside on a hot, summer day, enjoying a glass of sweet iced tea. She notices some water droplets on the outside of her glass.  What is causing those water droplets?

a)

The outside air is heating up the ice, causing it to melt into a liquid.

b)

The cold liquid in the glass is cooling the air around it, making it condense into a liquid.

c)

The outside air is heating up the liquid in the glass, causing it to evaporate.

d)

The liquid in the glass is cooling the air around it, causing it to evaporate.

87.

When you boil water in a pot, some of the water escapes as steam. Which of the following choices explains what is happening with the water molecules in this scenario?

a)

The molecules slow down as the kinetic energy increases and move farther apart from one another.

b)

The molecules slow down as the kinetic energy decreases and move closer together.

c)

The molecules speed up as the kinetic energy increases and the molecules move farther apart from one another.

d)

The molecules speed up as the kinetic energy decreases and the molecules move closer together.

88.

Which statement best describes what happens when heat is added to a substance?

a)

Energy moves out of the substance causing the molecules to slow down.

b)

Energy moves out of the substance causing the molecules to speed up.

c)

Energy moves into the substance causing the molecules to slow down.

d)

Energy moves into the substance causing the molecules to speed up.

89.

The slower the particles in a substance move,

a)

the colder it is.

b)

the warmer it is.

c)

the more energy it has.

90.

What state of matter?

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma!!!

91.

What state of matter?

a)

Solid

b)

Liquid

c)

Gas

92.

What state of matter?

a)

Solid

b)

Liquid

c)

Gas

93.
7. All phase changes (changing states) requires energy to be added or taken away.
a)
True
b)
False
94.

TRUE/FALSE: Matter can change from one phase to the other just as water can evaporate.

a)

True

b)

False

95.

Based on this photo, when liquid turning to gas is which of the following down below?

a)

Consensation

b)

Freezing

c)

Evaporation

d)

Melting

96.

This is when heat is absorbed, it is an

a)

Exothermic reaction

b)

endothermic reaction

c)

both

d)

none

97.

When heat is released it is an

a)

exothermic reaction

b)

endothermic reaction

c)

both

d)

none

98.

The temperature increases outside of this reaction

a)

exothermic

b)

endothermic

c)

both

d)

none

99.

The temperature decreases outside of this reaction

a)

exothermic

b)

endothermic

c)

both

d)

none

100.

Evidence of a chemical reaction is when 2 substances react, they

a)

stay the same

b)

form a new substance

c)

both

d)

none

101.

Your hands get cold outside from not wearing gloves

a)

exothermic

b)

endothermic

c)

both

d)

none

102.

Fire is an example of

a)

exothermic reaction

b)

endothermic reaction

c)

none

d)

both

103.

Fireworks are an example of

a)

exothermic

b)

endothermic

c)

both

d)

none

104.

A melting ice cube is an example of

a)

exothermic

b)

endothermic

c)

none

d)

both

105.

An ice pack in an example of

a)

exothermic

b)

endothermic

c)

both

d)

none

106.

photosynthesis is an example of

a)

Exothermic reaction

b)

Endothermic reaction

c)

both

d)

none

107.

Frying an egg is an example of

a)

exothermic reaction

b)

endothermic reaction

c)

both

d)

none

108.
In an exothermic reaction, heat is ...
a)
taken in
b)
given out
109.

In an endothermic reaction, heat is ...

a)

taken in

b)

given out

110.
If a chemical reaction is EXOTHERMIC, the temperature would....
a)
Stay the same
b)
Increase
c)
Decrease
111.
In an endothermic reaction the system is releasing energy.
a)
True
b)
False
112.
During an endothermic reaction in a beaker if we are part of the surroundings and touched the beaker, it would feel _______. 
a)
Warm
b)
Cold
113.
What type of reaction is shown in the photo?
a)
Exothermic
b)
Isothermic
c)
Endothermic
d)
None of the  above
114.
Have you ever eaten sherbet sweets candy? They fizz in your mouth and your tongue feels cold. Why do you think that is?
a)
It is an exothermic reaction
b)
It is an endothermic reaction
c)
It is made of ice
d)
It is dissolving your mouth
115.

What type of reaction occurs in a hand warmer?

a)

exothermic

b)

endothermic

116.
This bullseye demonstrates...
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
117.
?
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
118.
This image is an example of...
a)
precision ONLY
b)
accuracy ONLY
c)
BOTH precision and accuracy
d)
NEITHER precision and accuracy 
119.
Describe the accuracy and precision of the image
a)
Accurate and Precise
b)
Accurate and not precise
c)
Not Accurate and Precise
d)
not accurate and not precise
120.

How close a measurement is to the accepted value is called..

a)

Accuracy

b)

Precision

c)

Significant

d)

Estimate

121.
A set of data are all close to each other, but they are not close to the actual value.  This set of data can be described as...
a)
accurate
b)
precise
c)
both precise and accurate
122.
A set of data are all close to each other, and they are close to the actual value.  This set of data can be described as...
a)
accurate
b)
precise
c)
both precise and accurate
123.

Measurements: 24.9, 25.2, 25.1, 24.8

True Value: 25.0

These measurements are…

a)

Accurate, but not precise

b)

Precise, but not accurate

c)

Both precise and accurate

d)

Neither precise nor accurate

124.

Measurements: 2.5, 14.5, 10.1, 45.3

True Value: 25.0

These measurements are…

a)

Accurate, but not precise

b)

Precise, but not accurate

c)

Both precise and accurate

d)

Neither precise nor accurate

125.

What is the length?

a)

7

b)

7.7

c)

7.70

d)

7.700

126.

What is the volume?

a)

50

b)

45

c)

45.0

d)

40.5

127.

WHAT IS THE VOLUME?

a)

36

b)

36.5

c)

37.0

d)

36.0

128.

WHAT IS THE LENGTH?

a)

11.45

b)

11.4

c)

11

d)

11.450

129.

WHAT IS THE VOLUME?

a)

20.15

b)

20.1

c)

21.5

d)

21.50

130.

WHAT IS THE LENGTH?

a)

29

b)

29.2

c)

29.20

d)

30

131.

Which of the following is a diatomic molecule?

a)

CO2

b)

CO

c)

O2

d)

C

132.

elements that are stable as single atoms are called. . .

a)

Molecules

b)

Atoms

c)

Monoatomic

d)

Diatomic

133.

What is the symbol for Hydrogen?

a)

h

b)

Hyd

c)

H20

d)

H

134.

How many atoms of hydrogen are in the following molecule:

HCl

a)

0

b)

1

c)

2

d)

3

135.

Pure substances made of 2 or more different elements that are chemically combined in a specific ratio is a . . .

a)

Atom

b)

Element

c)

Compound

d)

Molecule

136.

Number of atoms in a molecule’s chemical formula is represented by . . .

a)

Atomic number

b)

Atomic mass

c)

Subscript

d)

Diatomic

137.

A group of 2 or more atoms held together by chemical bonds.

a)

Element

b)

Molecule

c)

Mixture

d)

Subatomic particles

138.

Pure substances listed on the periodic table that cannot be broken down into any other substances by chemical or physical means

a)

Elements

b)

Compounds

c)

Molecules

d)

Mixtures

139.

Which of the following is an example of a monoatomic element?

a)

N2O

b)

F2

c)

Ne

d)

NaCl

140.
Air
a)
Heterogeneous
b)
Homogeneous
141.
Soil
a)
Heterogeneous
b)
Homogeneous
142.
Pizza
a)
Heterogeneous
b)
Homogeneous
143.
Sugar water
a)
Heterogeneous
b)
Homogeneous
144.
Vinegar
a)
Heterogeneous
b)
Homogeneous
145.
Opened soda
a)
Heterogeneous
b)
Homogeneous
146.
Stainless steel
a)
Heterogeneous
b)
Homogeneous
147.
Soup
a)
Heterogeneous
b)
Homogeneous
148.
The substance being dissolved to form a solution is the __________.
a)
solvent
b)
solute
c)
precipitate
d)
mixture
149.
A substance is __________.
a)
a homogeneous mixture
b)
matter that has different compositions and properties throughout
c)
matter that has the same composition and properties throughout
d)
a heterogeneous mixture

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