Question 1

Convert 3000 m h-1 to km h-1.

Accepted Answer

A)  3 km h-1 
B)  0.3 km h-1 
C)  30 km h-1 
D)  300 km h-1 
E)  0.03 km h-1 
A)  3 km h-1 
B)  0.3 km h-1 
C)  30 km h-1 
D)  300 km h-1 
E)  0.03 km h-1

Question 2

How many significant figures are in the measurement 20.300 m?

Accepted Answer

A)  3 
B)  4 
C)  5 
D)  1 
E)  2 
A)  3 
B)  4 
C)  5 
D)  1 
E)  2

Question 3

I'm on a boat. It is travelling at 5.0 knots. What is the velocity in m s-1? (1 knot = 1.15078 miles per hour; 1 km = 0.6214 miles)

Accepted Answer

A)  2.6 m s-1 
B)  39 m s-1 
C)  1.9 m s-1 
D)  6.9 m s-1 
E)  0.83 m s-1 
A)  2.6 m s-1 
B)  39 m s-1 
C)  1.9 m s-1 
D)  6.9 m s-1 
E)  0.83 m s-1

Question 4

How many mg does a 433 kg sample contain?

Accepted Answer

A)  4.33 × 10-4 mg 
B)  4.33 × 107 mg 
C)  4.33 × 10-3 mg 
D)  4.33 × 106 mg 
E)  4.33 × 108 mg 
A)  4.33 × 10-4 mg 
B)  4.33 × 107 mg 
C)  4.33 × 10-3 mg 
D)  4.33 × 106 mg 
E)  4.33 × 108 mg

Question 5

Two or more substances in variable proportions, where the composition is constant throughout, are ________.

Accepted Answer

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

Question 6

Match the following.
-centi

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 7

Without using a calculator, solve the following problem:

Accepted Answer

A)  1 × 106 
B)  1 × 100 
C)  1 × 10-12 
D)  1 × 10-18 
A)  1 × 106 
B)  1 × 100 
C)  1 × 10-12 
D)  1 × 10-18

Question 8

Match the following.
-mega

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 9

Which of the following is an example of a chemical change?

Accepted Answer

A)  Condensation of steam 
B)  Melting gold 
C)  Evaporating water 
D)  Burning wood 
E)  Sublimation of moth balls 
A)  Condensation of steam 
B)  Melting gold 
C)  Evaporating water 
D)  Burning wood 
E)  Sublimation of moth balls

Question 10

A recipe requires 1.89 litres of milk for a soup base. How many quarts are needed?

Accepted Answer

A)  1.79 qts 
B)  2.00 qts 
C)  1.89 qts 
D)  2.10 qts 
E)  2.15 qts 
A)  1.79 qts 
B)  2.00 qts 
C)  1.89 qts 
D)  2.10 qts 
E)  2.15 qts

Question 11

Convert 8.3 mg to μg.

Accepted Answer

A)  0.0083 μg 
B)  83 μg 
C)  830 μg 
D)  8300 μg 
E)  83000 μg 
A)  0.0083 μg 
B)  83 μg 
C)  830 μg 
D)  8300 μg 
E)  83000 μg

Question 12

If the outside temperature is 35 °C, what is the temperature in K?

Accepted Answer

A)  -238 K 
B)  308 K 
C)  95 K 
D)  31 K 
E)  63 K 
A)  -238 K 
B)  308 K 
C)  95 K 
D)  31 K 
E)  63 K

Question 13

Gasoline 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 14

A basketball player is 189.5 cm tall. How tall is he in ft?

Accepted Answer

A)  7.281 ft 
B)  6.217 ft 
C)  5.832 ft 
D)  6.762 ft 
E)  5.143 ft 
A)  7.281 ft 
B)  6.217 ft 
C)  5.832 ft 
D)  6.762 ft 
E)  5.143 ft

Question 15

A chemical change ________.

Accepted Answer

A)  occurs when methane gas is burned 
B)  occurs when paper is shredded 
C)  occurs when water is vaporized 
D)  occurs when sand is mixed with water 
E)  occurs when powdered lemonade is stirred into water 
A)  occurs when methane gas is burned 
B)  occurs when paper is shredded 
C)  occurs when water is vaporized 
D)  occurs when sand is mixed with water 
E)  occurs when powdered lemonade is stirred into water

Question 16

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

Question 17

What answer should be reported, with the correct number of significant figures, for the following calculation?   × 12.3

Accepted Answer

A)  1.16 
B)  1 
C)  1.162 
D)  1.1621 
E)  1.2 
A)  1.16 
B)  1 
C)  1.162 
D)  1.1621 
E)  1.2

Question 18

Choose the heterogeneous mixture from the list below.

Accepted Answer

A)  sports drink 
B)  chlorine gas 
C)  black coffee 
D)  chicken noodle soup 
E)  carbon (graphite) 
A)  sports drink 
B)  chlorine gas 
C)  black coffee 
D)  chicken noodle soup 
E)  carbon (graphite)

Question 19

If a person buys a 1.00 US gallon jug of milk, how much milk does he have in L? (1 US gallon = 4 US quarts; 1 US quart = 2 US pints; 1 US pint = 0.473176 L.)

Accepted Answer

A)  4.00 L 
B)  3.79 L 
C)  4.55 L 
D)  3.50 L 
E)  2.00 L 
A)  4.00 L 
B)  3.79 L 
C)  4.55 L 
D)  3.50 L 
E)  2.00 L

Question 20

A student weighed 30.00 μg of sulfur in the lab. This is the same mass as ________.

Accepted Answer

A)  3.000 × 10-8 g 
B)  3.000 × 10-5 kg 
C)  3.000 × 10-5 mg 
D)  3.000 × 104 ng 
A)  3.000 × 10-8 g 
B)  3.000 × 10-5 kg 
C)  3.000 × 10-5 mg 
D)  3.000 × 104 ng

Exam 1: Units of Measurement for Physical and Chemical Change

Convert 3000 m h-1 to km h-1.

How many significant figures are in the measurement 20.300 m?

I'm on a boat. It is travelling at 5.0 knots. What is the velocity in m s-1? (1 knot = 1.15078 miles per hour; 1 km = 0.6214 miles)

How many mg does a 433 kg sample contain?

Two or more substances in variable proportions, where the composition is constant throughout, are ________.

Match the following. -centi

Without using a calculator, solve the following problem:

Match the following. -mega

Which of the following is an example of a chemical change?

A recipe requires 1.89 litres of milk for a soup base. How many quarts are needed?

Convert 8.3 mg to μg.

If the outside temperature is 35 °C, what is the temperature in K?

Gasoline is an example of ________.

A basketball player is 189.5 cm tall. How tall is he in ft?

A chemical change ________.

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

What answer should be reported, with the correct number of significant figures, for the following calculation? × 12.3

Choose the heterogeneous mixture from the list below.

If a person buys a 1.00 US gallon jug of milk, how much milk does he have in L? (1 US gallon = 4 US quarts; 1 US quart = 2 US pints; 1 US pint = 0.473176 L.)

A student weighed 30.00 μg of sulfur in the lab. This is the same mass as ________.

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 3000 m h^-1 to km h^-1.

I'm on a boat. It is travelling at 5.0 knots. What is the velocity in m s^-1? (1 knot = 1.15078 miles per hour; 1 km = 0.6214 miles)