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CHEMISTRY-FINAL EXAM

Total questions: 70

Worksheet time: 35mins

Name
Class
Date
1.

The molar volume of a gas at STP occupies _____________.

a)

22.4 L

b)

0˚C

c)

1 kiloPascal

d)

12 grams

2.

If 2.00 L of a gas in a container at room temperature exerts a pressure of 4.00 atm. If the pressure doubles and the temperature remains the same, the volume would become ________.

a)

16.0 L

b)

2.00 L

c)

4.00 L

d)

1.00 L

3.

If 7.00 grams of nitrogen gas are contained in a 5.00 L flask at 4.62 kPa. What is the temperature of the gas?

a)

11.1 K

b)

1.00 K

c)

4.12 K

d)

9.07 K

4.

What are the coefficients that will balance the skeleton equation below?

AlCl3 + NaOH → Al(OH)3 + NaCl

a)

1,3,1,3

b)

3,1,3,1

c)

1,1,1,3

d)

1,3,3,1

5.

A sample of gas occupies 52.0 mL at 20℃ and 1.00 atm. What volume will it occupy at 40℃ and 1.00 atm?

a)

62.4 mL

b)

44.8 mL

c)

55.5 mL

d)

48.7 mL

6.

What is the name of H2SO4?

a)

hyposulfuric acid

b)

hydrosulfuric acid

c)

sulfuric acid

d)

sulfurous acid

7.

The periodic table is organized by the

a)

atomic numbers

b)

alphabetical order

c)

densities

d)

melting points

8.

What is the oxidation number for Carbon?

a)

+4 and -4

b)

-3

c)

+1

9.
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
10.
What is the formula for density?
a)
density = mass x volume
b)
density = mass / volume
c)
density = mass + volume
d)
density = mass - volume
11.
What is the density of this substance? 
a)
1 g/ml
b)
1 gram
c)
1ml
d)
10 g/ml
12.
Which lab tool might you use to measure the volume of a liquid?
a)
electric scale
b)
bunsen burner
c)
test tube
d)
graduated cylinder
13.
The summary at the end of an experiment that explains the results. 
a)
conclusion
b)
procedures
c)
materials
d)
responding variable
14.
What is being measured or the result/effect of this experiment?
a)
ramp height
b)
the speed that the ball rolls
c)
type of ball
15.
An atom becomes _________ when it gains electrons.
a)
Positive
b)
Negative
c)
Neutral
d)
Invinsible
16.
What is the charge of an atom that has gained one electron?
a)
-1
b)
-2
c)
+1
d)
+2
17.
the central region of an atom where its neutrons and protons are is its 
a)
nucleus 
b)
electron cloud
c)
core 
d)
center 
18.
The positive particles of an atom are 
a)
electrons 
b)
positrons 
c)
neutrons 
d)
protons 
19.
The pH of a solution is tested, and it is found to be a basic solution. Of the following choices, what could the pH have been?
a)
3
b)
9
c)
7
d)
5
20.
Holly has an unknown substance in a beaker. She wants to determine the relative pH of the unknown substance. She places a piece of blue litmus paper into the substance, and the litmus paper stays blue.
The substance in the beaker
a)
is a base.
b)
has a neutral pH.
c)
is an acid.
d)
does not have a pH.
21.
When using pH paper, the pH of a solution can be determined by looking at the _______ of the paper.
a)
texture
b)
color
c)
length
d)
mass
22.
Fill in the blank:
A __________________ chemical equation shows that the same number of atoms in the reactants are also in the product.
a)
balanced
b)
transferred
c)
rearranged
d)
beautiful
23.

____ percent of the earth is water, ______ percent of the earth has land for agriculture?

a)

80,10

b)

75,10

c)

15, 75

d)

none of the above

24.

soil is defined as what?

a)

anything that looks like dirt

b)

decayed organic matter only

c)

natural materials that can support plant growth

d)

mixture of grains and decayed matter

25.

If I want to characterize soil, I can use refractive index.

a)

true

b)

false

26.

I look at a topographic map to see what?

a)

a road map with all major and minor roads

b)

soil composition in the area

c)

ocean locations

d)

geographic features of an area

27.

We analyze soil evidence by looking at?

a)

physical properties

b)

chemical properties

c)

mineralogy

d)

all of the above

28.

Which of these would increase the probative value of soil?

a)

rocks

b)

rare or unusual minerals

c)

fossils

d)

all of the above

29.

What makes sand different than other components of soil?

a)

color

b)

particle size

c)

refractive index

d)

density

30.
Soil layers are also known as
a)
Stacks
b)
Scopes
c)
Horizons
d)
Increments
31.
Which of the following is an inorganic material?
a)
Bones
b)
Animal
c)
Plant
d)
Water
32.
According to the diagram, what soil type is present in layer C?
a)
Topsoil
b)
Subsoil
c)
Bedrock
d)
Parent Material
33.
Soil can be easily compared wet, moist, or dry.
a)
True 
b)
False
34.
Which of the following determine the type of soil?
a)
Climate
b)
Temperature
c)
Texture
d)
Humidity
35.
In which layer would leaching occur?
a)
O Horizon
b)
E Horizon
c)
C Horizon
d)
R Horizon
36.
Which of the following is the largest in size?
a)
Clay
b)
Sand
c)
Silt 
37.
In addition to the crime scene, soil must be collected from ___.
a)
the most recent place the investigator has been
b)
all alibi locations that the suspect claims
c)
each location the victim has been to in the past two weeks
d)
the loc
38.

Soil acidity is measured in

a)

% organic matter

b)

pH

c)

salinity

d)

% nitrogen

39.

Why is it important to know your soil's pH?

a)

It affects the availability of different nutrients.

b)

It changes with soil temperature.

c)

It affects water holding capacity of the soil.

d)

It is impossible to alter.

e)

It affects the soil texture.

40.

You cannot use any fertilizer in an organic garden.

a)

True

b)

False

41.

What is 1 thing you cannot learn from a soil test?

a)

The presence of disease-causing organisms in the soil

b)

The pH of the soil

c)

The % of organic matter in the soil

d)

The level of phosphorus in the soil

e)

The estimated texture of the soil

42.

What is the percentage of nitrogen in this fertilizer?

a)

4%

b)

6%

c)

3%

d)

Not enough information

43.

Which 2 would be the best choices for growing plants in containers? (Organic doesn't matter here.)

a)
b)
c)
d)
44.

What is the soil component that has tiny, flat particles and often contributes to compaction and poor drainage?

a)

Sand

b)

Clay

c)

Silt

d)

Organic matter

45.

What does N-P-K stand for? In the right order.

a)

Nitrogen-Phosphorus-Potassium

b)

Nitrogen-Potassium-Phosphorus

c)

Nice-Plants-Kid

d)

Nitrate-Porosity-Krypton

46.

Iron, copper, and zinc are all examples of...

a)

Fertilizers

b)

Micronutrients

c)

Organic matter

d)

Macronutrients

e)

Microorganisms

47.

Soil is formed by the breaking down of rocks by the action of wind, water and climate. This process is called

a)

Humification

b)

Weathering

c)

Soil erosion

d)

None of the above

48.

What colour precipitate do chloride ions produce?

a)

White

b)

Cream

c)

Yellow

d)

Green

49.
Which of the following is NOT one of the three types of soil?
a)
clay
b)
sand
c)
silt
d)
mud
50.
You should never ______ chemicals in the lab. 
a)
taste
b)
touch
c)
smell
d)
all of the above
51.
Which item is NOT part of the hazard diamond system? 
a)
Health
b)
Flammability
c)
Volatility
d)
Reactivity
52.

This symbol represents

a)

dangerously reactive material

b)

flammable and combustible material

c)

materials causing toxic effects

d)

biohazardous material

53.

Flammable materials, like alcohol, should never be dispensed near

a)

an open door

b)

an open flame

c)

another student

d)

a sink

54.

Why would you wear goggles in the lab?

a)

to prevent eye strain

b)

to improve your vision

c)

for protection from UV rays

d)

for protection from chemicals, heat, or glassware

55.

After completing an experiment, all chemical wastes should be

a)

left at your lab station for the next class

b)

disposed of according to your instructor's directions

c)

dumped in the sink

d)

taken home

56.

If a lab experiment is not completed, you should

a)

discuss options with your instructor

b)

keep working after the bell to finish up

c)

sneak in after school and work alone

d)

come in during lunch and work while finishing your lunch

57.

You are heating a substance in a test tube. Always point the open end of the tube

a)

toward yourself

b)

toward your lab partner

c)

toward another classmate

d)

away from all people

58.

When you heat a piece of glass and need to pick it up, you should

a)

use a rag or paper towels

b)

pick up the end that looks cooler

c)

use tongs

d)

pour cold water on it

59.

The first thing you should do if you get injured in the lab is

a)

tell the instructor immediately

b)

see a doctor after school

c)

visit the school nurse after class

d)

apply first aid yourself

60.

Personal eyeglasses provide as much protection in a lab as

a)

a face shield

b)

safety glasses

c)

splashproof chemical goggles

d)

sunglasses

61.

Which of the following should not be worn in the lab?

a)

closed toe shoes, hair ties

b)

watches, short sleeved shirts

c)

loose clothing, dangling jewelry

d)

long pants, boots

62.

If an acid is splashed on your skin, wash at once with

a)

soap

b)

oil

c)

another, weaker acid

d)

plenty of water

63.

True or false: Hot glass looks the same as cold glass

a)

true

b)

false

64.

You are allowed to enter the chemical storage area any time you need to get an item

a)

true

b)

false

65.

True or false: Unfamiliar chemicals can be considered safe unless the instructor tells you otherwise

a)

true

b)

false

66.
Which process involves the joining of small nuclei?
a)
Beta decay
b)
Alpha decay
c)
Nuclear fission
d)
Nuclear fusion
67.
Which process involves the splitting of large nuclei?
a)
Beta decay
b)
Alpha decay
c)
Nuclear fission
d)
Nuclear fusion
68.
Arrange in order of increasing ability to penetrate matter.
a)
Beta, gamma, alpha
b)
Alpha, gamma, beta
c)
Gamma, beta, alpha
d)
Alpha, beta, gamma
69.
Classify this process.
a)
Nuclear fission
b)
Nuclear fusion
c)
Alpha decay
d)
Beta decay
70.

Complete the nuclear equation and determine the type of decay that is occurring in this reaction.

a)

alpha

b)

beta

c)

gamma

d)

none

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