Question 1

Choose the pure substance from the list below.

Accepted Answer

A)  tea 
B)  a casserole 
C)  carbon monoxide 
D)  sugar water 
E)  pomegranate juice 
A)  tea 
B)  a casserole 
C)  carbon monoxide 
D)  sugar water 
E)  pomegranate juice

Question 2

Systematic error is defined as

Accepted Answer

A)  error that tends to be consistently too high or too low. 
B)  error that has equal probability of being too high or too low. 
C)  error that averages out with repeated trials. 
D)  error that is random. 
A)  error that tends to be consistently too high or too low. 
B)  error that has equal probability of being too high or too low. 
C)  error that averages out with repeated trials. 
D)  error that is random.

Question 3

Convert 10 cm3 to m3.

Accepted Answer

A)  1 × 10-5 m3 
B)  1 × 10-1 m3 
C)  1 × 103 m3 
D)  1 × 107 m3 
A)  1 × 10-5 m3 
B)  1 × 10-1 m3 
C)  1 × 103 m3 
D)  1 × 107 m3

Question 4

A lamp post is 120 inches tall. How tall is the post in cm?

Accepted Answer

A)  305 cm 
B)  125 cm 
C)  225 cm 
D)  192 cm 
E)  128 cm 
A)  305 cm 
B)  125 cm 
C)  225 cm 
D)  192 cm 
E)  128 cm

Question 5

A flash drive contains 4 gigabytes. How many bytes does it contain?

Accepted Answer

4 000 000 000 bytes,

Question 6

Convert 35 m3 to litres.

Accepted Answer

A)  3.5 × 10-2 L 
B)  3.5 L 
C)  3.5 × 102 L 
D)  3.5 × 104 L 
A)  3.5 × 10-2 L 
B)  3.5 L 
C)  3.5 × 102 L 
D)  3.5 × 104 L

Question 7

Second is a measure of ________.

Accepted Answer

A)  mass 
B)  time 
C)  temperature 
D)  length 
E)  volume 
A)  mass 
B)  time 
C)  temperature 
D)  length 
E)  volume

Question 8

A mass of mercury occupies 0. 750 L. What volume would an equal mass of ethanol occupy? The density of mercury is  13.546 g mL-1 and the density of ethanol is 0.789 g mL-1.

Accepted Answer

A)  0.0 437 L 
B)  0. 0777 L 
C)  12.9 L 
D)  22.9 L 
A)  0.0 437 L 
B)  0. 0777 L 
C)  12.9 L 
D)  22.9 L

Question 9

Because of the high heat and low humidity in the summer in Death Valley, California, a visitor requires about one quart of water for every two miles travelled on foot. Calculate the approximate number of litres required for a person to walk 10. kilometres in Death Valley.

Accepted Answer

A)  2.9 L 
B)  12 L 
C)  30 L 
D)  47 L 
A)  2.9 L 
B)  12 L 
C)  30 L 
D)  47 L

Question 10

Match the following.
-nano

Accepted Answer

A) 10-9 
B) 103 
C) 10-6 
D) 106 
E) 10-1
F)10-3
G)10-2 
A) 10-9 
B) 103 
C) 10-6 
D) 106 
E) 10-1
F)10-3
G)10-2

Question 11

Gold is an example of ________.

Accepted Answer

A)  a compound 
B)  an element 
C)  a heterogeneous mixture 
D)  a homogeneous mixture 
A)  a compound 
B)  an element 
C)  a heterogeneous mixture 
D)  a homogeneous mixture

Question 12

What answer should be reported, with the correct number of significant figures, for the following calculation? -log(3.28 × 10-3)

Accepted Answer

A)  2 
B)  2.484 
C)  2.4841 
D)  2.48 
E)  2.5 
A)  2 
B)  2.484 
C)  2.4841 
D)  2.48 
E)  2.5

Question 13

Ethanol has a boiling point of 351 K. What is the boiling point in °C?

Accepted Answer

A)  78 °C 
B)  -195 °C 
C)  122 °C 
D)  62 °C 
E)  86 °C 
A)  78 °C 
B)  -195 °C 
C)  122 °C 
D)  62 °C 
E)  86 °C

Question 14

How many significant figures are in 3.408 × 104 m?

Accepted Answer

A)  3 
B)  4 
C)  5 
D)  7 
E)  8 
A)  3 
B)  4 
C)  5 
D)  7 
E)  8

Question 15

If a truck gets 13.5 miles per gallon (mpg) fuel efficiency, calculate the fuel efficiency in litres per 100 km. (1 US gal = 3.78541 L; 1 mile = 1609.34 m)

Accepted Answer

A)  8.19 L (100 km)-1 
B)  12.9 L (100 km)-1 
C)  17.4 L (100 km)-1 
D)  21.3 L (100 km)-1 
E)  24.7 L (100 km)-1 
A)  8.19 L (100 km)-1 
B)  12.9 L (100 km)-1 
C)  17.4 L (100 km)-1 
D)  21.3 L (100 km)-1 
E)  24.7 L (100 km)-1

Question 16

How many significant figures are there in the answer to the following problem? 
56.4 + 0. 8822 + 21

Accepted Answer

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

Question 17

Identify the unit of measurement that is a SI base unit of measurement.

Accepted Answer

A)  second 
B)  Celsius 
C)  cup 
D)  pound 
E)  yard 
A)  second 
B)  Celsius 
C)  cup 
D)  pound 
E)  yard

Question 18

Which of the following is the smallest volume?

Accepted Answer

A)  44 cm3 
B)  1.0 dL 
C)  5.5 × 103 mL 
D)  1.0 × 108 nL 
A)  44 cm3 
B)  1.0 dL 
C)  5.5 × 103 mL 
D)  1.0 × 108 nL

Question 19

38.325 lbs = ________ grams. (1 lb = 454 g)

Accepted Answer

The answer of 38.325 lbs = ________ grams. (1 lb...

Question 20

Convert 514 nm to m and express it in scientific notation.

Accepted Answer

A)  514*10-5 m 
B)  5.14*10-7 m 
C)  51.4*10-7 m 
D)  5.14*1011 m 
E)  5.14*10-9 m 
A)  514*10-5 m 
B)  5.14*10-7 m 
C)  51.4*10-7 m 
D)  5.14*1011 m 
E)  5.14*10-9 m

Exam 1: Units of Measurement for Physical and Chemical Change

Choose the pure substance from the list below.

Systematic error is defined as

Convert 10 cm3 to m3.

A lamp post is 120 inches tall. How tall is the post in cm?

A flash drive contains 4 gigabytes. How many bytes does it contain?

Convert 35 m3 to litres.

Second is a measure of ________.

A mass of mercury occupies 0. 750 L. What volume would an equal mass of ethanol occupy? The density of mercury is 13.546 g mL-1 and the density of ethanol is 0.789 g mL-1.

Because of the high heat and low humidity in the summer in Death Valley, California, a visitor requires about one quart of water for every two miles travelled on foot. Calculate the approximate number of litres required for a person to walk 10. kilometres in Death Valley.

Match the following. -nano

Gold is an example of ________.

What answer should be reported, with the correct number of significant figures, for the following calculation? -log(3.28 × 10-3)

Ethanol has a boiling point of 351 K. What is the boiling point in °C?

How many significant figures are in 3.408 × 104 m?

If a truck gets 13.5 miles per gallon (mpg) fuel efficiency, calculate the fuel efficiency in litres per 100 km. (1 US gal = 3.78541 L; 1 mile = 1609.34 m)

How many significant figures are there in the answer to the following problem? 56.4 + 0. 8822 + 21

Identify the unit of measurement that is a SI base unit of measurement.

Which of the following is the smallest volume?

38.325 lbs = ________ grams. (1 lb = 454 g)

Convert 514 nm to m and express it in scientific notation.

Atoms and Elements

Molecules, Compounds, and Nomenclature

Chemical Reactions and Stoichiometry

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding Ii: Molecular Shapes, Valence Bond Theory, and Molecular Orbital Theory

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry I: Structures

Organic Chemistry Ii: Reactions

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

Convert 10 cm³ to m³.

Convert 35 m³ to litres.

A mass of mercury occupies 0. 750 L. What volume would an equal mass of ethanol occupy? The density of mercury is 13.546 g mL^-1 and the density of ethanol is 0.789 g mL^-1.

What answer should be reported, with the correct number of significant figures, for the following calculation? -log(3.28 × 10^-3)

How many significant figures are in 3.408 × 10⁴ m?