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Semester 1 Final Review

Total questions: 44

Worksheet time: 53mins

Name
Class
Date
1.

What happens to a sample of gas when it is cooled?

a)

The particles speed up; thermal energy goes up

b)

The particles slow down; thermal energy goes up

c)

The particles speed up; thermal energy goes down

d)

The particles slow down; thermal energy goes down

2.

If you were to climb up a mountain, what would happen to the mercury level in a barometer?

a)

It wouldn't change

b)

It would go up

c)

It would go down

d)

It would go up and down

3.

What happens to atmospheric pressure as you climb up a mountain?

a)

It stays the same

b)

It goes up

c)

It goes down

4.

Colorado has a higher or lower atmospheric pressure compared to Indiana?

a)

Higher

b)

Lower

5.

If the volume of a gas decreases, at constant temperature pressure will

a)

increase

b)

decrease

c)

stay the same

d)

cannot predict the change

6.

If the temperature of a gas increases inside a closed container, the pressure will...

a)

go up

b)

go down

c)

stay the same

7.

Liquid particles move ______ than gas particles

a)

faster

b)

slower

c)

the same

8.

What happens to thermal energy during a phase change?

a)

it increases then decreases

b)

it decreases then increases

c)

it increases

d)

it decreases

e)

it stays the same

9.

If you boil a sample of water, what is inside the bubble?

a)

H2 and O2

b)

H2O

c)

air

d)

empty space

10.

When you freeze ice cream...

a)

the ice cream absorbs energy from the surroundings

b)

the ice cream releases energy to the surroundings

c)

the ice cream particles are arranged in an orderly pattern

d)

the ice cream particles break apart

11.

When you put a cold spoon in hot tea, when does the heat stop transferring to the spoon?

a)

when the tea cools down

b)

when the spoon heats up

c)

when the spoon and tea are the same temperature

d)

when the spoon and tea temperatures change by the same amount

12.

This substance cannot be broken down by physical or chemical means.

a)

mixture

b)

element

c)

compound

d)

pure mixture

13.

True or false: in a physical change a new substance is formed

a)

True

b)

False

14.

Which is not true about a mole of helium atoms?

a)

It would weigh 4.0 grams

b)

It contains 6.02 x 1023 atoms

c)

It would weigh the same as a mole of hydrogen

d)

It has the same number of atoms as a mole of hydrogen

15.

How many calcium atoms are in: Ca3(PO4)2

a)

2

b)

3

c)

5

d)

6

16.

What is the molar mass of (NH4)2CO3?

a)

144

b)

138

c)

96

d)

78

17.

A sample of hydrogen at 1.5 atm had its pressure decreased to 0.50 atm producing a new volume of 750 mL. What was its original volume?

a)

245 ml

b)

345 ml

c)

123 ml

d)

250.mL

18.

1. A sample of carbon dioxide occupies a volume of 3.50 liters at 125 kPa pressure. What pressure would the gas exert if the volume was decreased to 2.00 liters?

a)

219 KPa

b)

222 KPa

c)

567 KPa

d)

654 KPa

19.
Which container will have a lower pressure?
a)
left
b)
right
c)
they both have the same pressure
d)
I don't know
20.
There are 40 liters of helium in a balloon at 100 K. If the temperature of the balloon is increased to 200 K, what will the new volume of the balloon be?
a)
80 L
b)
45 L
c)
54 L
d)
45.33 L
21.
Tom wants his balloon back to normal size so he decides to put it on a heating vent. If the balloon initially has a volume of 0.6 L and a temperature of 293 K, what will the volume of the balloon be when it heats up to a temperature of 176°C?
a)
0.39 L
b)
0.92 L
c)
0.78 L
d)
0.92 K
22.

A gas is at a pressure of 95 kPa. What is its pressure in atmospheres?

a)

1.5 atm

b)

1.09 atm

c)

0.94 atm

d)

0.82 atm

23.

How much heat is required to melt 26.0 g of ice at 0∘C? The heat of fusion is 334 J/g

a)

5880 J

b)

8680

c)

109 J

d)

0 J

24.
A material was cooled from 100ºC to 40ºC.  What is the temperature change?
a)
60ºC
b)
40ºC
c)
-60ºC
d)
-40ºC
25.
A sample of iron receives 50.J of heat energy that raises the temperature of the iron 25.0°C. If iron has a specific heat of  0.10 J/g°C, what is the mass of the iron sample?
a)
25 g
b)
30 g
c)
20 g
d)
50 g
26.
How does heat flow?
a)
Always from cold to warm
b)
Always from warm to cold
c)
Both warm to cold & cold to warm
d)
It depends on the temperature
27.

Which of the following is NOT considered a diatomic element?

a)

Carbon

b)

Nitrogen

c)

Chlorine

d)

Iodine

28.
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
29.

What is the melting point of water in Kelvin?

a)

0 K

b)

100 K

c)

273 K

d)

373 K

30.
How many significant figures: 216 m
a)
1
b)
2
c)
3
d)
0
31.
How many significant figures: 153.0 mL
a)
1
b)
2
c)
3
d)
4
32.
How many significant figures: 2016 m
a)
1
b)
2
c)
3
d)
4
33.
How many significant figures: 1000 mL
a)
1
b)
2
c)
3
d)
4
34.

Complete the following calculations. Round off your answers as needed.

52.6 g + 309.1 g +77.214 g

a)

438.9

b)

438.914

c)

438.91

d)

4.38914 x 102

35.

Complete the following calculations. Round off your answers as needed.

245.01 km x 2.1 km

a)

5.14521 x 102

b)

510

c)

514

d)

514.521

36.
You know 1000 mg = 1 g.  Convert 2.5 grams into milligrams.
a)
25 mg
b)
25,000 mg
c)
250 mg
d)
2500 mg
37.
How would you write 4.3756 x 104 in standard form?
a)
437,560,000
b)
0.00043756
c)
43,756
d)
4,3756
38.
How would you write -5.6 x 10-3 in standard form?
a)
0.0056
b)
-5,600
c)
0.00056
d)
-0.0056
39.
What is the volume of the water?
a)
24 mL
b)
21.5 mL
c)
20.5 mL
d)
22 mL
40.

How many bars of energy are being absorbed by the ice?

a)

1

b)

2

c)

3

d)

4

41.

How many bars of phase energy would a liquid have?

a)

1

b)

2

c)

3

d)

4

42.

What is the empirical formula if you have 74.83% carbon and 25.17% hydrogen?

a)

C3H8

b)

CH4

c)

C2H2

d)

C4H10

43.
Which pair has the same empirical formula?
a)
NaCrO4 and Na2Cr2O7
b)
C2H4O2 and C6H12O6
c)
C3H6O3 and C2H6O2
d)
CH4 and C2H6
44.
What is the molecular formula for a compound with the empirical formula: K2SO4 and a molecular mass of 696g.
a)
K2SO4 
b)
K8SO16
c)
K8S4O8 
d)
K8S4O16 

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