Question 1

Define the law of the conservation of energy.

Accepted Answer

Energy is ...

Question 2

Which of the following are examples of physical change?

Accepted Answer

A)   Powdered fruit drink is dissolved in water.
B)   Coffee is brewed.
C)   Dry ice sublimes.
D)   Ice melts.
E)   All of these are examples of physical change.

Question 3

Identify a unit that is used for area.

Accepted Answer

A)   L 
B)   yd
C)   yd2
D)   Kelvin
E)   m

Question 4

How many mg does an 830 kg sample contain?

Accepted Answer

A)   8.30 × 10-4 mg
B)   8.30 × 107 mg
C)   8.30 × 10-3 mg
D)   8.30 × 106 mg
E)   8.30 × 108 mg

Question 5

What is the volume (in cm3) of a 43.6 g piece of metal with a density of 2.71 g/cm3?

Accepted Answer

A)   16.1
B)   19.5
C)   0.425
D)   6.65
E)   none of the above

Question 6

Choose the pure substance from the list below.

Accepted Answer

A)   lemonade
B)   salt
C)   air
D)   wine
E)   juice B

Question 7

Gas is sold for $1.399 per liter in Toronto,Canada.Your car needs 12.00 gallons.How much will your credit card be charged in Canadian dollars?

Accepted Answer

A)   $16.79
B)   $67.15
C)   $4.44
D)   $63.54 D

Question 8

Which of the following represents a chemical property of hydrogen gas?

Accepted Answer

A)   It is a gas at room temperature.
B)   It is less dense than air.
C)   It explodes with a flame.
D)   It is odorless.
E)   It has a low density.

Question 9

Distillation is

Accepted Answer

A)   a process in which the more volatile liquid is boiled off.
B)   dissolving a solid into a liquid.
C)   separating a solid from a liquid by pouring off the liquid.
D)   pouring a mixture through a filter paper to separate the solid from the liquid.
E)   heating a mixture of two solids to fuse them together. A

Question 10

The correct answer (reported to the proper number of significant figures) to the following is: 12.5 × 9.68 = ________

Accepted Answer

A)   121
B)   121.0000
C)   121.000
D)   121.00
E)   121.0

Question 11

An acetylene molecule contains 2 atoms of carbon.The number 2 represents how many significant figures?

Accepted Answer

A)   one
B)   two
C)   three
D)   infinite

Question 12

Read the length of the metal bar with the correct number of significant figures.

Accepted Answer

A)   20 cm
B)   15 cm
C)   15.0 cm
D)   15.00 cm
E)   15.000 cm

Question 13

Identify the exact number.

Accepted Answer

A)   2
B)   2.0
C)   2.00
D)   2.000
E)   2.0000

Question 14

If a solution has a temperature of 255 K,what is its temperature in degrees Celsius?

Accepted Answer

A)   491°C
B)   528°C
C)   123.9°C
D)   355°C
E)   -18°C

Question 15

Match between columns
                        Premises: centi
nano
kilo
mega
deci
milli
micro

Accepted Answer

The Answer of 10^-1 and 10³ and 10^-2 and 10⁶ is...

Question 16

Round the following number to four significant figures and express the result in standard exponential notation: 442,722

Accepted Answer

A)   0.4427 × 106
B)   442,700
C)   4.427 × 10-5
D)   4.427 × 105
E)   44.27 × 104

Question 17

Choose the element from the list below.

Accepted Answer

A)   sodium chloride
B)   table salt
C)   hydrogen peroxide
D)   iron
E)   rust

Question 18

How many significant figures are there in the answer to the following problem? (9.992 × 3.200) + 0.610 = ?

Accepted Answer

A)   one
B)   two
C)   three
D)   four

Question 19

The outside air temperature is 40°F,what is the temperature in Kelvin?

Accepted Answer

A)   313 K
B)   377 K
C)   281 K
D)   277 K

Question 20

How many liters of air are in a room that measures 3 cm3 A)  2.80 × 104 B)  104 C)  30.2 D)  3.02 × 107 E)  9.14 × 105" class="answers-bank-image d-inline" rel="preload" > and has a 10.0 ft ceiling? 1 in.= 2.54 cm (exactly) ; 1 L = 103 cm3

Accepted Answer

A)   2.80 × 104
B)   104
C)   30.2
D)   3.02 × 107
E)   9.14 × 105

Exam 1: Matter, measurement, and Problem Solving

Define the law of the conservation of energy.

Correct Answer
verified
Energy is ...
View Answer

Which of the following are examples of physical change?

Correct Answer
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Identify a unit that is used for area.

Correct Answer
verified

How many mg does an 830 kg sample contain?

Correct Answer
verified

What is the volume (in cm³) of a 43.6 g piece of metal with a density of 2.71 g/cm³?

Correct Answer
verified

Choose the pure substance from the list below.

Correct Answer
verified
B

Gas is sold for $1.399 per liter in Toronto,Canada.Your car needs 12.00 gallons.How much will your credit card be charged in Canadian dollars?

Correct Answer
verified
D

Which of the following represents a chemical property of hydrogen gas?

Correct Answer
verified

Distillation is

Correct Answer
verified
A

The correct answer (reported to the proper number of significant figures) to the following is: 12.5 × 9.68 = ________

Correct Answer
verified

An acetylene molecule contains 2 atoms of carbon.The number 2 represents how many significant figures?

Correct Answer
verified

Read the length of the metal bar with the correct number of significant figures.

Correct Answer
verified

Identify the exact number.

Correct Answer
verified

If a solution has a temperature of 255 K,what is its temperature in degrees Celsius?

Correct Answer
verified

Match the following.

Round the following number to four significant figures and express the result in standard exponential notation: 442,722

Correct Answer
verified

Choose the element from the list below.

Correct Answer
verified

How many significant figures are there in the answer to the following problem? (9.992 × 3.200) + 0.610 = ?

Correct Answer
verified

The outside air temperature is 40°F,what is the temperature in Kelvin?

Correct Answer
verified

How many liters of air are in a room that measures and has a 10.0 ft ceiling? 1 in.= 2.54 cm (exactly) ; 1 L = 10³ cm³

Correct Answer
verified

Exam 1: Matter, measurement, and Problem Solving

Define the law of the conservation of energy.

Correct AnswerverifiedEnergy is ...View AnswerShow Answer

Which of the following are examples of physical change?

Correct AnswerverifiedShow Answer

Identify a unit that is used for area.

Correct AnswerverifiedShow Answer

How many mg does an 830 kg sample contain?

Correct AnswerverifiedShow Answer

What is the volume (in cm3) of a 43.6 g piece of metal with a density of 2.71 g/cm3?

Correct AnswerverifiedShow Answer

Choose the pure substance from the list below.

Correct AnswerverifiedB

Gas is sold for $1.399 per liter in Toronto,Canada.Your car needs 12.00 gallons.How much will your credit card be charged in Canadian dollars?

Correct AnswerverifiedD

Which of the following represents a chemical property of hydrogen gas?

Correct AnswerverifiedShow Answer

Distillation is

Correct AnswerverifiedA

The correct answer (reported to the proper number of significant figures) to the following is: 12.5 × 9.68 = ________

Correct AnswerverifiedShow Answer

An acetylene molecule contains 2 atoms of carbon.The number 2 represents how many significant figures?

Correct AnswerverifiedShow Answer

Read the length of the metal bar with the correct number of significant figures.

Correct AnswerverifiedShow Answer

Identify the exact number.

Correct AnswerverifiedShow Answer

If a solution has a temperature of 255 K,what is its temperature in degrees Celsius?

Correct AnswerverifiedShow Answer

Match the following.

Round the following number to four significant figures and express the result in standard exponential notation: 442,722

Correct AnswerverifiedShow Answer

Choose the element from the list below.

Correct AnswerverifiedShow Answer

How many significant figures are there in the answer to the following problem? (9.992 × 3.200) + 0.610 = ?

Correct AnswerverifiedShow Answer

The outside air temperature is 40°F,what is the temperature in Kelvin?

Correct AnswerverifiedShow Answer

How many liters of air are in a room that measures and has a 10.0 ft ceiling? 1 in.= 2.54 cm (exactly) ; 1 L = 103 cm3

Correct AnswerverifiedShow Answer

Correct Answer
verified
Energy is ...
View Answer

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Correct Answer
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Correct Answer
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What is the volume (in cm³) of a 43.6 g piece of metal with a density of 2.71 g/cm³?

Correct Answer
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Correct Answer
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B

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D

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A

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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified

How many liters of air are in a room that measures and has a 10.0 ft ceiling? 1 in.= 2.54 cm (exactly) ; 1 L = 10³ cm³

Correct Answer
verified