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Chemistry Exam #2 Review: Conversions, Sci Notation, Error

Total questions: 75

Worksheet time: 2hrs 29mins

Name
Class
Date
1.

Convert 60 mL to quarts (1 quart = 946 mL)

a)

15.8 quarts

b)

1006 quarts

c)

56750 quarts

d)

0.06 quarts

2.

Convert 125 grams to pounds (454 grams = 1 pound)

a)

0.275 pounds

b)

56750 pounds

c)

3.632 pounds

d)

579 pounds

3.

Convert 95 miles to km ( 1.6 km = 1 mile)

a)

95.62 km

b)

58.9 km

c)

152 km

d)

0.0065 km

4.

Convert 14 ounces to grams  ( 1 ounce = 28.35 grams)

a)

396.9 grams

b)

2.025 grams

c)

42.35 grams

d)

0.494 grams

5.

Convert 69 inches to cm ( 1 inch = 2.54 cm)

a)

27.17 cm

b)

175.26 cm

c)

66.46 cm

d)

0.037 cm

6.

Convert 0.00042 mL to L ( 1000 mL = 1 L)

a)

1000.00042 L

b)

2380952.381 L

c)

4.2 x 10-8 L

d)

.42 L

7.

Convert 1999 inches to m (39.37 inches = 1 meter)

a)

50.77 m

b)

0.0196 m

c)

78700.63 m

d)

2038.37 m

8.

Convert 61 feet to meters ( 1 meter = 3.28 feet)

a)

0.054 m

b)

101.68 m

c)

18.60 m

d)

64.28 meters

9.

Convert 4.002 kg to grams ( 1 kg = 1000 g)

a)

0.004002 grams

b)

249.88 grams

c)

1004.002 grams

d)

4002 grams

10.

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 having...

a)

good accuracy

b)

good precision

c)

both good precision and accuracy

d)

neither good precision nor good accuracy

11.

Accuracy is

a)

Measurements that are close together

b)

Measurements that are close to the true value

c)

How close measurements are to the true value

d)

How close together measurements are to each other

12.
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
13.
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
14.
Zed went to the store and bought a bag of chips.  He estimated there would be 350 chips in the package, but realized there were only 210 chips in that package.  What was his percent error?
a)
35%
b)
67%
c)
85%
d)
92%
15.
The students measured length during a science experiement, they got 12 cm. But the actual measurement was 14.25 cm. What was the percent error?
a)
15.79%
b)
18.75%
c)
2.25%
d)
18%
16.

The boiling point of a chemical (Ethanol) is 78.40 Degrees Celsius. A Student conducts an experiment and finds the boiling point of 75.0 Degrees Celsius. What is the percent error of the student's measurement?

a)

3.57%

b)

4.3%

c)

96.56%

d)

2.7%

17.

A lab group was calculating the speed of a radio car. They measured the speed to be 1.8 m/s. The actual speed was 2.2 m/s. What was their percent error?

a)

22.2%

b)

40%

c)

18.1%

d)

122%

18.

A student was measuring the ratio of a circle’s circumference and diameter. They found the ratio to be 3.45. The actual ratio (circumference divided by diameter) was 3.14. What was their percent error?

a)

9.87%

b)

8.99%

c)

0.0987%

d)

0.0899%

19.
This image is an example of...
a)
precision ONLY
b)
accuracy ONLY
c)
BOTH precision and accuracy
d)
NEITHER precision and accuracy 
20.

The following measurements were made to determine the density of a material whose value was, according to the handbook of Chemistry and Physics, 3.75 g/mL

Trial #1 4.75 g/mL

Trial #2 4.76 g/mL

Trial #3 4.74 g/mL

Are these Measurements Accurate, Precise, Both or Neither?

a)

Accurate, but not Precise

b)

Precise, but not accurate

c)

Both

d)

Neither

21.

A measurement was taken three times. The correct measurement was 68.1 mL

Trial #1 72 mL

Trial #2 64.5 mL

Trial #3 68.1 mL

Are these Measurements Accurate, Precise, Both, or Neither?

a)

Accurate, but not Precise

b)

Precise, but not accurate

c)

Both

d)

Neither

22.

A measurement was taken three times. The correct measurement was 68.1 mL

Trial #1 68.0 mL

Trial #2 68.2 mL

Trial #3 68.1 mL

Are these Measurements Accurate, Precise, Both, or Neither?

a)

Accurate, but not Precise

b)

Precise, but not accurate

c)

Both

d)

Neither

23.

A measurement was taken three times. The correct measurement was 68.1 mL

Trial #1 78.1 mL

Trial #2 43.4 mL

Trial #3 2.0 mL

Are these Measurements Accurate, Precise, Both, or Neither?

a)

Accurate, but not Precise

b)

Precise, but not accurate

c)

Both

d)

Neither

24.

When measuring the accuracy of measurements, you are actually measuring the:

a)

Mode

b)

Median

c)

Range

d)

Mean / Average

25.

When measuring the precision of measurements, you are actually measuring the:

a)

Mode

b)

Median

c)

Range

d)

Mean / Average

26.
Change from standard form to scientific notation: 12,000,000
a)
12.0  x  107
b)
0.12  x  107
c)
1.2  x  106
d)
1.2  x  107
27.
Change from standard form to scientific notation: 0.004078
a)
4.078  x  10-3
b)
4.078  x  103
c)
40.78  x  10-4
d)
.4078  x  10-2
28.
Change from standard form to scientific notation:  450,000
a)
4.5  x  105
b)
45  x  105
c)
4.5  x  104
d)
4.5  x  106
29.
Try to change the number back to standard form: 3.97  x  10-2
a)
0.000397
b)
0.0397
c)
0.0000397
d)
0.397
30.
Write 2.08 x 102  in standard form.
a)
208
b)
0.0208
c)
20,800
d)
0.208
31.
How do you write
1001
in scientific notation?
a)
1.0001 x 104
b)
1.01 x 105
c)
1.001 x 103
d)
10.1 x 103
32.
How do you write
8.317 x 106
in standard form?
a)
8, 371, 000
b)
83, 170, 000
c)
837, 100
d)
8, 317, 000
33.
Write 46.3 x 104 in scientific notation.
a)
It is in scientific notation.
b)
.463 x 106
c)
4.63 x 105
d)
4.63 x 104
34.

How do you properly format an email?

a)

Subject, Greeting, Body, Signature

b)

Subject, Body, Signature, Closing

c)

Signature, Body, Greeting, Subject

d)

Subject, Greeting, Body, Closing, Signature

35.

When sending a message to a teacher, always...

a)

use all CAPS

b)

Be specific and follow email etiquette

c)

Be super flattering to get what you want

d)

Tell them all of the details, even the personal things that aren't relevant to the email.

36.

A subject line should...

a)

be blank

b)

be descriptive and clear

c)

give all the details of what is in the content of the email

d)

use 1 word

37.

The _____ is the main part of the email message that contains text and images/attachments.

a)

body

b)

closing

c)

paragraphs

d)

subject

38.

A closing is a polite ending to a message. Which is NOT a good example of a closing?

a)

best reguards

b)

sincerely

c)

thank you

d)

See ya!

39.

A signature is used at the end of your email to provide identifying information such as your first and last name and class period

a)

True

b)

False

40.

Always proofread your email for ________ errors before sending.

a)

grammar

b)

puncuation

c)

capitalization

d)

spelling

e)

All of the above

41.
How should you sign your email?
a)
With your full name
b)
With your nickname
c)
With someone else's name
d)
With an emoticon :)
42.

Is the tone of the email pictured positive or negative?

a)

Positive

b)

Negative

43.

What are the TWO mistakes in the pictured email? Select ALL that apply.

a)

Missing Greeting

b)

Misspelled Words

c)

Missing Subject

d)

Missing Closing

e)

Incorrect/ Missing Punctuation

44.
This variable in an experiment is the one being deliberately changed by the scientist. 
a)
dependent variable
b)
independent variable
c)
data
d)
control group
45.
There are two types of data. Which type of data involves numbers that are obtained by counting or measuring?
a)
quantitative
b)
qualitative
46.
Mr. S. sets up an experiment to see how the mass of a ball affects the distance it rolls off a ramp.  Identify the dependent variable.
a)
height of the ramp
b)
 distance traveled by the ball
c)
mass of the ball
d)
weight of the ball
47.
Mr. S. sets up an experiment to see how the mass of a ball affects the distance it rolls off a ramp.  Identify the independent variable.
a)
distance traveled by the ball
b)
height of the ramp
c)
mass of the ball
d)
weight of the ball
48.
A student is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. The dependent variable is the _____.
a)
Diameter of the ball
b)
Force acting on the ball
c)
Height that the ball bounces
d)
Height from which the ball is dropped
49.
When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?
a)
Dependent
b)
Independent
c)
Control
d)
Compound
50.
An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, what is the dependent variable?
a)
Type of plant
b)
Water, apple juice, milk
c)
Plant growth
d)
Color of the plant's leaves
51.
If I ride my bike to school instead of walking, then I will get to school faster. What is the dependent variable?
a)
True
b)
How fast you get to school
c)
Riding a bike or walking
d)
False
52.

A testable explanation to a problem that has not yet been tested. 

a)

Theory

b)

Hypothesis

c)

Data

d)

Fact

53.

Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground.

What is the dependent variable?

a)

Dropping the same way

b)

Wing Length

c)

Amount of time it takes the helicopter to hit the floor

d)

Dropping from the same height

54.

Convert 99.6°F to Celsius (5/9 x (0F - 32))

a)

37.6°C

b)

-173.4°C

c)

73.1°C

d)

375°C

55.

Convert 15°C to Fahrenheit (1.8 x 0C) + 32

a)

63.8°F

b)

84.6°F

c)

-9.4°F

d)

59°F

56.
Convert -89 oC to K
a)
184K
b)
362K
c)
-362K
d)
-184K
57.

Using the formula 5/9 (℉-32), convert 110 ℉ to ℃.

a)

33

b)

23

c)

53

d)

43

58.

The highest temperature ever recorded on Earth was 134 oF at Death Valley, California. What is this temperature in oC?

a)

273.2

b)

56.6

c)

407

d)

-139

59.
An irregularly shaped piece of gold was lowered into a graduated cylinder holding a volume of water equal to 17 ml. The height of the water rose to 20 ml. If the mass of the gold was 27 g, what was its density?
a)
9 g/mL
b)
10.5 g/mL
c)
6.5 g/mL
d)
8 g/mL
60.

An irregularly shaped rock was lowered into a graduated cylinder holding a volume of water equal to 50 ml. The height of the water rose to 75 ml. If the mass of the stone was 250 g, what was its density?

a)

15 g/mL

b)

3.3 g/mL

c)

10 g/mL

d)

20 g/mL

61.

The block of wood has a mass of 2.00 kg and a volume of 5.00 cm3. What is the density of the wood?

a)

4 kg/cm3

b)

.4 kg/cm3

c)

40 kg.cm3

d)

4.5 kg/cm3

62.

What is the density of water?

a)

2 g/cm³

b)

0.5 g/cm³

c)

10 g/cm³

d)

1 g/cm³

63.

10. If the volume of an object is 15cm³ and its density is 5g/cm³, what is its mass?

a)

30g

b)

10g

c)

75g

d)

50g

64.

If the density of a material is 3g/cm³ and its volume is 15cm³, what is its mass?

a)

The mass is 45g.

b)

The mass is 30g.

c)

The mass is 60g.

d)

The mass is 50g.

65.

If you use hand sanitizer, then it will kill as many germs as bacterial soap does. This is an example of...

a)

law

b)

theory

c)

hypothesis

d)

belief

66.

It is God's plan for species to change over time

a)

Fact

b)

Theory

c)

Law

d)

Belief

67.

Carbon dioxide is one part carbon, two parts oxygen.

a)

Fact

b)

Theory

c)

Law

d)

Belief

68.

If I breed a golden retriever with a doodle, I’ll get a combination of the two (golden doodle).

a)

Fact

b)

Theory

c)

Law

d)

Hypothesis

69.

There are 4 quarters in a U.S. dollar.

a)

Fact

b)

Theory

c)

Law

d)

Belief

70.

Pizza is better with pineapple

a)

Fact

b)

Theory

c)

Law

d)

Belief

71.

For every force, there is an equal and opposite force.

a)

Fact

b)

Theory

c)

Law

d)

Belief

72.

Can only be explained mathematically.

a)

hypothesis

b)

theory

c)

law

73.

Example: F = m x a

a)

Hypothesis

b)

Law

c)

Theory

74.

Example: If it’s going to rain then Grandpa’s knee hurts because of the change in air pressure.

a)

Law

b)

Hypothesis

c)

Theory

75.

The extinction of dinosaurs occurred as a result of a huge comet hitting the earth.

a)

Fact

b)

Theory

c)

Law

d)

Belief

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