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Unit 1 Part 1

Total questions: 86

Worksheet time: 2hrs 18mins

Name
Class
Date
1.
Heat transfers from an area of ____temperature to an area of ___ temperature.
a)
high to low
b)
low to high
c)
high to high
d)
It can travel high to low and low to high. 
2.

Molecules in cold things move more _________

than in hot things.

a)

quickly

b)

slowly

c)

speedy

d)

Rapidly

3.

Which direction will the heat flow while this person holds a hot cup of tea?

a)

from the cup to her hand

b)

from her hand to the cup

c)

no heat is transferred

d)

Heat does not move

4.
The amount of energy required to raise the temperature 1ºC for every kilogram is called____?
a)
Thermal Energy
b)
Specific Heat
c)
Temperature
d)
Kinetic Energy
5.
What is the symbol for Thermal Energy?
a)
Q
b)
t
c)
m
d)
C
6.
What unit do you use to measure Thermal Energy?
a)
J/Kg ºC
b)
Kg
c)
ºC
d)
J
7.
What is the symbol for Specific Heat
a)
Q
b)
t
c)
m
d)
C
8.
What is the equation to measure change in Thermal Energy?
a)
Q=mc∆t
b)
Q=mc
c)
Q= ∆mct
d)
m=QC
9.
Water has a specific heat of 4184 J/KgºC.  Wood has a specific heat of 1760 J/KgºC.  What material needs more energy to raise the temperature 1ºC
a)
Wood
b)
Water
c)
Both are the same
10.
Copper, Stainless Steel, Carbon Steel, and Zinc were all heated using the same thermal energy.  What material would be the coolest after being heated?
a)
Copper
b)
Carbon Steel
c)
Zinc
d)
Stainless Steel
11.
What does temperature measure?
a)
Heat
b)
ºC
c)
Kinetic Energy
d)
Thermal Energy
12.
How many Joules of energy are required to change 10 gram of ice at -2 C to water at 20 C?
a)
440 J
b)
880 J
c)
10,140 J
d)
66,000 J
13.
How many Joules of energy are required to make 100 grams of ice at 0 C completely melt?
a)
200 J
b)
400 J
c)
30,000 J
d)
2,000,000 J
14.
A high specific heat means...
a)
It requires less energy to change temperature
b)
It requires more energy to change temperature
c)
It heats up very quickly
15.
When a  piece of aluminum foil is taken out of the oven and cools from 100° C to 50°C, What is the change in temperature?
a)
50°
b)
0°
c)
100°
d)
150°
16.

When two things are the same temperature:

a)

They have the same number of molecules

b)

Their molecules stop moving

c)

Their molecules move at the same average speed

d)

Heat transfer between the two things stops

17.

Absolute zero is shown as 0 on which scale?

a)

Fahrenheit

b)

Celsius

c)

Kelvin

d)

Centigrade

18.

Which of the following is true of the Celsius scale?

a)

212o is the boiling point of water

b)

0 degrees is absolute zero

c)

0 degrees is the freezing point of water

d)

32o is the freezing point of water

19.

One common application of thermal energy is

a)

a toaster oven

b)

a microwave oven

c)

a refrigerator

d)

a thermometer

20.

You have two identical stuffed animals in your room. One in the shade and one in the direct sunlight of the window. What happens to the thermal energy of the two stuffed animals.

a)

The one in the shade will have less thermal energy and the one in the sunlight will obtain more thermal energy.

b)

More thermal shade, less thermal in the sunlight.

c)

Both will have the same because they are identical having the same amount of mass.

d)

The both will raise temperature and thermal energy about 15 degrees, just the one in the shade will take less time to reach the top temperature.

21.

Define Thermal Energy

a)

The average kinetic energy of all particles in a substance.

b)

The flow or exchange of thermal energy to another substance.

c)

The total amount of kinetic energy contained in the atoms of a substance.

d)

The amount of heat transfer from one system to another.

22.

Which type of chemical reaction is found to create an ice pack for a sport injury.

a)

Exothermic

b)

Endothermic

c)

Closed System

d)

Thermal Energy

23.

The measure of the average kinetic energy of all molecules in a sample of matter.

a)

Heat

b)

Thermal Energy

c)

Radiation

d)

Temperature

24.

Which of the following would contain molecules with the greatest average kinetic energy?

a)

Water vapor from your breath on a cold night.

b)

A snow ball

c)

Ice on a pond

d)

A glass of hot coco

25.

If the molecules in an object begin to move faster, their average kinetic energy will __________and the object's temp. will ___________.

a)

Increase, rise.

b)

Increase, fall.

c)

decrease, rise.

d)

decrease, fall.

26.

Which of the following helps explain why salt dissolves more rapidly in hot water than in cold water?

a)

The salt and hot water form bonds

b)

The salt reacts best with water

c)

The salt breaks down into smaller molecules in hot water instead of cold water.

d)

The greater motion of hot water molecules causes the salt molecules to spread out more quickly.

27.

Identify the system and the surroundings in our class lab with the two baggies of chemicals mixed together?

a)

Outside the bag is the system, Surroundings are the chemicals inside.

b)

Chemicals inside are the system, outside of the bag is the surroundings.

c)

School Building is the system, State of Missouri is the surroundings.

d)

USA is the system, and the World is the surroundings.

28.

Heat is often measured in units called _____.

a)

temperature

b)

degrees

c)

pounds

d)

calories

29.

In this state of matter the molecules are spaced very far apart from each other and move freely through space.

a)

liquid

b)

solid

c)

plasma

d)

gas

30.

In this state of matter the molecules are in constant contact with one another, but they can move around freely.

a)

liquid

b)

solid

c)

plasma

d)

gas

31.

In this state of matter the molecules vibrate in place, but they do not change positions relative to each other.

a)

liquid

b)

solid

c)

plasma

d)

gas

32.

In this state of matter molecules move the fastest.

a)

liquid

b)

solid

c)

plasma

d)

gas

33.

In this state of matter molecules move the slowest.

a)

liquid

b)

solid

c)

plasma

d)

gas

34.

When molecules in an object move faster, they have more _______.

a)

potential energy

b)

kinetic energy

c)

mass

d)

volume

35.

This potential energy of a molecule is stored ...

a)

in the atoms of the molecule.

b)

in the air around the molecule.

c)

in a vacuum within the molecule.

d)

in the bonds between atoms.

36.

The total kinetic and potential energy of the molecules in an object is known as _______.

a)

thermal energy

b)

total energy

c)

energy of the universe

d)

its power to work

37.

Energy is defined as

a)

power

b)

food

c)

ability to produce heat

d)

ability to do work or cause change

38.

The diagram above represents a thermometer. Which of the following best explains how the thermometer works?

a)

Liquid changes to a gas when heated.

b)

Gas changes to a liquid when heated.

c)

Liquids expand when heated and contract when cooled.

d)

Liquids contract when heated and expand when cooled.

39.

The three scales used to measure temperature are

a)

metric, American and wrong

b)

Celsius, Fahrenheit, and Calvin

c)

Celsius, Fahrenheit, and Kelvin

40.

The heat absorbed while a solid is melting is known as....

a)

heat of fusion

b)

heat of solid

c)

heat of liquid

d)

heat of vaporization

41.

Calculate the energy needed to completely boil away 30 g of water at 100 ⁰C .

a)

67,800 J

b)

2260 J

c)

226,000 J

d)

100 J

42.
The symbol for specific heat is .......
a)
Cp
b)
Q
c)
m
d)
T
43.
A high specific heat means...
a)
It heats up quickly with energy added
b)
It requires more energy to change temperature
44.

Which of the following best explains why the sand at the beach is hotter than the water?

a)

Sand has a higher specific heat than water.

b)

Sand has a lower specific heat than water.

c)

There is more water than sand at the beach.

d)

There is more sand than water at the beach.

45.

Using the heat equation, what would the formula look like if we were solving for change in temperature?

a)

Q m = ∆T C

b)

Q / (m C) = ∆T

c)

Q m / C = ∆T

d)

m c Q = ∆T

46.
Calculate the heat absorbed by 105.0 grams of water when it is heated to cook spaghetti. The initial temperature of the water is 20.0°C, and the final temperature of the water is 99.0°C. The specific heat of water is 4.18 J/g•°C.
a)
8778 J/g°C
b)
0.0005 J/g°C
c)
34673 J/g°C
d)
43451.1 J/g°C
47.

20 g of water. specific heat of water is 4.18 J/g°C. temperature changes from 25° C to 20° C, what will the value of q be?

a)

positive

b)

negative

c)

equilibrium

d)

q does not exist

48.

What letter do we use to represent mass?

a)

Q

b)

m

c)

c

d)

ΔT\Delta T

49.

The unit for mass is

a)

g

b)

J

c)

J/gC

d)

°C\degree C

50.

What does ΔT\Delta T  represent?

a)

tf −tit_{f\ }-t_i  

b)

ti −tft_{i\ }-t_f  

c)

t - celsius

d)

celsius - t

51.
Exothermic reactions...
a)
Absorb energy
b)
Release energy
c)
Release Color
d)
Absorb Color
52.

Temperature when a substance changes from a liquid to a gas

a)

Heat of Vaporization

b)

Boiling point

c)

Heat Energy

d)

Phase change

53.

What is the heat of vaporization (Qv)?

a)

The heat required to make Vick's Vapor Rub.

b)

The heat required to change 1 gram of a substance between a liquid and a solid.

c)

The heat required to change 1 gram of a substance between a liquid and a gas.

54.

The Law of Conservation of Energy states:

a)

energy can be created and destroyed and changed

b)

energy can be created but not destroyed and simply changes forms

c)

energy cannot be created or destroyed it simply changes forms

55.

What are the 2 things that determine whether something is a solid, liquid, or a gas?

a)

the color of the matter

b)

the motion of the particles in the matter

c)

the forces between the particles of matter

d)

the matter's ability to react with other matter

56.

When particles in matter move faster, they move farther apart. What happens to the attractive forces holding the particles together?

a)

the attractive forces get stronger

b)

the attractive forces get weaker

c)

the attractive forces do not change

d)

there is not enough information to answer this question

57.

Which of the following are properties of a solid? There is more than one correct answer.

a)

definite shape

b)

definite volume

c)

particles are packed tightly together

d)

attractive forces between particles are strong

58.

What are the properties of a liquid? There is more than one correct answer.

a)

definite shape

b)

definite volume

c)

attractive forces between particles are weaker than in a solid

d)

take the shape of the container they are in

59.

What are the properties of gasses? There is more than one correct answer.

a)

definite shape

b)

definite volume

c)

particles are moving very quickly

d)

particles are very far apart

60.

In which state of matter are particles moving the fastest?

a)

solid

b)

liquid

c)

gas

61.

Evaporation is the change in state of a

a)

gas to a liquid

b)

gas to a solid

c)

solid to a liquid

d)

liquid to a gas

62.

In which state are the distances between the particles greatest?

a)

Both gas and liquid

b)

Liquid

c)

Gas

d)

Solid

63.

Particles of a liquid

a)

are tightly packed together and stay in a fixed position.

b)

are free to move around one another but still touch.

64.

What state of matter?

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma!!!

65.

What state of matter?

a)

Solid

b)

Liquid

c)

Gas

66.
If the tops were removed from the cylinders, the following would happen:
a)
The solid would fly out of the container
b)
The liquid would fly out of the container.
c)
The gas would fly out of the container.
d)
They ALL would fly out of the container.
67.

What is the definition of matter?

a)

Anything that has mass and takes up space

b)

A substance that is liquid, solid, or gas

c)

Anything that is pure

d)

Anything that you can see or hold

68.

What term means "take up space"

a)

Volume

b)

Matter

c)

Mass

d)

Substance

69.

Sophia combines a black liquid and a clear liquid. She observes that the two liquids do not mix. Sophia allows the mixture to settle for 30 minutes.

Which of the statements below best describes the properties of the two liquids?

a)

The clear liquid is less dense than the black liquid.

b)

The clear liquid is more dense than the black liquid.

c)

The volume of the clear liquid is less than the black liquid.

d)

The volume of the clear liquid is greater than the black liquid.

70.

John fills a graduated cylinder with 50 mL of water. He then drops a 60g key into the graduated cylinder. The water level inside the graduated cylinder rose to 53 mL as shown below.


If Density = Mass / Volume, what is the density of the key ?

a)

60 g/mL

b)

20 g/mL

c)

2.05 g/mL

d)

0.05 g/mL

71.

1. When ice melts. Its particles

a)

gain energy and begin to move

b)

lose energy and begin to move

c)

move far apart and gain energy

d)

close together and lose energy

72.

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)

73.

Which object has the highest density in this picture?

a)

A

b)

B

c)

C

74.

Which object has the lowest density in this picture?

a)

A

b)

B

c)

C

75.

You calculated the density of an unknown substance to be 7.8g/cm3. According to the chart, which of the substances doe you most likely have?

a)

Zinc

b)

Copper

c)

Tin

d)

Iron

76.

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

77.
Here are 5 cubic centimeters (cm3).    All together they  have a mass of 20 g what is the density?
a)
20 g/cm3
b)
100 grams
c)
 4 g/cm3
d)
5 g/cm3
78.

What is the formula for density?

a)

density = mass / volume

b)

density = volume / mass

c)

density = mass x volume

d)

density = mass + volume

79.

What do substances less dense than water do?

a)

Sink in water

b)

Float on water

c)

Dissolve in water

d)

Freeze in water

80.

Calculate the volume

Starting volume = 25mL

Final Volume = 30mL

a)

55mL

b)

5mL

c)

15mL

d)

10mL

81.
Helium balloons rise on earth because
a)
helium is less dense than air
b)
helium is more dense than air
c)
helium is cooler than air
d)
helium is warmer than air
82.
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
83.
What is the formula for finding volume of a cylinder? 
a)
πr²h
b)
πd²h
c)
4/3πr3
d)
π
84.
The formula for the volume of a...
a)
sphere
b)
cone
c)
cylinder
d)
cube
85.
2. A change of state from a liquid to a solid is called....
a)
Melting
b)
Freezing
c)
Evaporation
86.

Baking bread and cooking an egg are examples of....?

a)

Endothermic processes

b)

Exothermic processess

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