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Summer School Unit 1 Test

Total questions: 50

Worksheet time: 5hrs 9mins

Name
Class
Date
1.
The mass of an object is 30 g.  The volume is 5 mL.  What is the density of this object?
a)
6 g/cm
b)
6 g/mL
c)
6
2.
What units are used to measure mass of an object?
a)
cm
b)
cm3
c)
g
d)
g/cm3
3.
What is the volume of Object X?
a)
10.0 cm3
b)
15.0 cm3
c)
20.0 cm3
d)
25.0 cm3
4.

This tool is used to measure...

a)

volume

b)

mass

c)

density

d)

moles

5.

Matter consists of

a)

electrons

b)

protons

c)

atoms

d)

molecules

e)

all of the above

6.

The state of matter in which the molecules/atoms are FURTHEST apart

a)

solid

b)

liquid

c)

gas

7.

This state of matter has no definite shape

a)

gas

b)

solid

c)

liquid

d)

both gas and liquid

8.

When a gas molecules lose energy and become a liquid it is known as

a)

vaporization

b)

condensation

c)

melting

d)

freezing

9.

A substance that requires a LOT of energy to vaporize has a relatively ______________________boiling point/ temperature

a)

low

b)

high

c)

moderate (neither low nor high, middle of the road)

10.

A substance that requires a LOT of energy to melt (solid to liquid) has a relatively ___________________ melting point

a)

high

b)

low

c)

moderate (neither high nor low, average)

11.
How many significant figures does the following number have?
0.00345
a)
6
b)
5
c)
3
d)
Ambiguous: 3,4,5, or 6
12.
How many significant figures does the following number have: 100.00210
a)
7
b)
8
c)
10
d)
Ambiguous: 7 or 8
13.
Round 1289 to three significant figures
a)

1290

b)

130

c)

1300

d)

1.29 x 10310^3

14.
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

15.
Solve and give your answer with the correct number of significant figures
1421-34
a)
1.39x103
b)
1387
c)
1390
d)

1400

16.

Which of the following is responsible for the generation of heat energy?

a)

Gravitational force

b)

Electromagnetic waves

c)

Photons

d)

Movement of atoms

17.

By nature, HEAT flows...

a)

from higher temperature to lower temperature.

b)

from lower temperature to lower temperature.

c)

from one place to another place with the same temperature.

d)

from vacuum to matter.

18.

When heat is absorbed during chemical reaction, this process is called...

a)

Synthesis reaction

b)

Decomposition reaction

c)

Exothermic reaction

d)

Endothermic reaction

19.
What type of reaction is shown in the photo?
a)
Exothermic
b)
Isothermic
c)
Endothermic
d)
None of the  above
20.

What does catalyst do to a reaction?

a)

Slows down the reaction

b)

Nothing changes

c)

Speeds up the reaction

21.

What is the type of reaction shown above?

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

22.

A decomposition reaction can be recognized because it has...

a)

only one product

b)

only one reactant

c)

2 or more reactants and 2 or more products

d)

the presence of a catalyst

23.
Which of the following is an example of synthesis?
a)
Na + Br2 --> NaBr
b)
KClO3 --> KCl + O2
c)
HgO + Cl2-->HgCl + O2
d)
Cl2 + NaBr --> NaCl + Br2
24.

What is an example of exothermic?

a)

firework

b)

ice pack

c)

coal

d)

wood

25.

Temperature is...

a)

A measure of the potential energy stored in a substance

b)

The same as heat

c)

A measure of the random motions of the components of a substance

26.

Which material needs the MOST energy to increase the temperature by 1 °C?

a)

Helium

b)

Water

c)

Diamond

d)

Glass

27.

A pot of water is boiled from 20 °C to 100 °C. What is the ΔT ?

a)

20 °C

b)

100 °C

c)

40 °C

d)

80 °C

28.

What does Q represent in:


Q=m*c*ΔT

a)

Energy Flow

b)

Mass

c)

Specific Heat Capacity

d)

Change in temperature

29.

How many joules of heat are needed to raise the temperature of 10.0 g of aluminum from 22 °C to 55 °C, if the specific heat of aluminum is 0.90 J/g°C

a)

297 J

b)

450 J

c)

698 J

d)

802 J

30.

How much heat is required to raise the temperature of 8.0 g of water by 10.0°C? The heat capacity of water is 4.184 J/g°C.

a)

128 J

b)

160 J

c)

250 J

d)

335 J

31.

50 g of a metal absorbs 900 J when it is heated from 25 °C to 85 °C. What is the specific heat of the metal?

a)

0.7 J/g°C

b)

0.3 J/g°C

c)

1.2 J/g°C

d)

2.0 J/°C

32.

A 500 gram cube of lead is heated from 25 °C to 75 °C. How much energy was required to heat the lead? The specific heat of lead is 0.129 J/g°C.

a)

2029 J

b)

555 J

c)

3225 J

d)

5030 J

33.
In which region(s) does temperature remain constant?
a)
Region 1, 3, & 5
b)
Region 2 & 4
c)
Region 1 only
d)
Region 1 & 2
34.
In which region(s) does temperature increase?
a)
Region 1, 3, & 5
b)
Region 2 & 4
c)
Region 1 only
d)
Region 1 & 2
35.
In which region(s) of the graph would the substance be a liquid only?
a)
Region 1
b)
Region 2
c)
Region 3
d)
Region 4
36.
In which region(s) of the graph would the substance be a liquid and a gas?
a)
Region 2
b)
Region 3
c)
Region 4
d)
Region 5
37.
Between which points is the substance changing its state of matter?
a)
A-B only. 
b)
A-B, C-D, E-F
c)
B-C only. 
d)
B-C, D-E
38.

Given the heating curve of a solid being heated at a constant rate, what is the boiling point of this substance?

a)

20°C

b)

50°C

c)

110°C

d)

170°C

39.

Given the heating curve of water, what is happening to potential and kinetic energy during segment CD?

a)

the potential energy and kinetic energy both increase

b)

the potential energy increases while the kinetic energy decreases

c)

the potential energy is constant while the kinetic energy increases

d)

the potential energy increases while the kinetic energy is constant

40.

Given the heating curve of a solid being heated at a constant rate, how much total time was required to boil this substance after it reached its melting point?

a)

3 minutes

b)

4 minutes

c)

10 minutes

d)

14 minutes

41.

What is the freezing point of the substance?

a)

0oC

b)

60oC

c)

120oC

d)

180oC

42.

From point A to point F, the sample is going through an __________ process by __________.

a)

exothermic, releasing heat to the surroundings

b)

exothermic, absorbing heat from the surroundings

c)

endothermic, releasing heat to the surroundings

d)

endothermic, absorbing heat from the surroundings

43.

What letter on the diagram represents the substance only in the gas phase?

a)

A

b)

B

c)

C

d)

D

44.

What letter on the diagram represents a substance only in the liquid?

a)

A

b)

B

c)

C

d)

D

45.

What letter on the diagram represents a substance only in the solid phase?

a)

A

b)

B

c)

C

d)

D

46.

What is the normal boiling point of this substance? (Diagram C)

a)

150 °C

b)

100 °C

c)

-50 °C

d)

0 °C

47.

A substance is a liquid at 120 kPa and 80oC.  What happens to the substance if the pressure is dropped to 40 kPa while staying at 800C?

a)

It turns into a solid

b)

It turns into a liquid

c)

It turns into a gas

48.

Charles' Law States...

a)

As Volume goes up temperature goes up 

b)

As Pressure goes down volume goes down 

c)

As Pressure goes up volume goes down

d)

As Pressure goes up temperature goes up

49.

What does the unit atmosphere, atm, measure?

a)

Pressure

b)

Temperature

c)

Volume

d)

Moles

50.

A sealed container has a pressure of 1.5 atm at 25°C. If the temperature is raised to 125°C, what will be the new pressure?

a)

2

b)

1.12

c)

7.5

d)

0.3

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