Question 1

An alligator is 244.0 cm long. How long is it in feet?

Accepted Answer

A) 8.00 ft 
B) 96.0 ft 
C) 20.3 ft 
D) 6.00 ft 
E) 9.00 ft 
A) 8.00 ft 
B) 96.0 ft 
C) 20.3 ft 
D) 6.00 ft 
E) 9.00 ft

Question 2

The width, length, and height of a large, custom-made shipping crate are 1.22 m,   and   respectively. The volume of the box using the correct number of significant figures is ________   .

Accepted Answer

A) 3.26057 
B) 3.3 
C) 3.26 
D) 3.261 
E) 3.2606 
A) 3.26057 
B) 3.3 
C) 3.26 
D) 3.261 
E) 3.2606

Question 3

Which of the following is an example of extensive properties?

Accepted Answer

A) mass 
B) colour 
C) density 
D) temperature 
E) taste 
A) mass 
B) colour 
C) density 
D) temperature 
E) taste

Question 4

Match the following.

-deci

Accepted Answer

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

Question 5

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

Accepted Answer

A) It is gaseous at room temperature. 
B) It is less dense than air. 
C) It reacts explosively with oxygen. 
D) It is colourless. 
E) It is tasteless. 
A) It is gaseous at room temperature. 
B) It is less dense than air. 
C) It reacts explosively with oxygen. 
D) It is colourless. 
E) It is tasteless.

Question 6

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

Question 7

A person is 64.00 inches tall. How tall is she in cm?

Accepted Answer

A) 162.6 cm 
B) 25.20 cm 
C) 25.60 cm 
D) 192.0 cm 
E) 128.0 cm 
A) 162.6 cm 
B) 25.20 cm 
C) 25.60 cm 
D) 192.0 cm 
E) 128.0 cm

Question 8

Match the following.

-mega

Accepted Answer

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

Question 9

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 10

Determine the density of an object that has a mass of 149.8 g and displaces 12.1 mL of water when placed in a graduated cylinder.

Accepted Answer

A) 8.08 g mL-1 
B) 1.38 g mL-1 
C) 12 .4 g mL-1 
D) 18.1 g mL-1 
E) 11.4 g mL-1 
A) 8.08 g mL-1 
B) 1.38 g mL-1 
C) 12 .4 g mL-1 
D) 18.1 g mL-1 
E) 11.4 g mL-1

Question 11

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 12

Define random error.

Accepted Answer

Random error has an

Question 13

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 14

What answer should be reported, with the correct number of significant figures, for the following calculation? 
100 × 10-1.4 + log(1.6 × 102)

Accepted Answer

A) 6.2 
B) 6.19 
C) 6.18 
D) 6 
E) 6.185 
A) 6.2 
B) 6.19 
C) 6.18 
D) 6 
E) 6.185

Question 15

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 16

Define energy.

Accepted Answer

Energy is

Question 17

How many cm3 are contained in 3.77 × 104 mm3?

Accepted Answer

A) 3.77 × 104 cm3 
B) 3.77 × 101 cm3 
C) 3.77 × 10-10 cm3 
D) 3.77 × 1020 cm3 
E) 3.77 × 106 cm3 
A) 3.77 × 104 cm3 
B) 3.77 × 101 cm3 
C) 3.77 × 10-10 cm3 
D) 3.77 × 1020 cm3 
E) 3.77 × 106 cm3

Question 18

What answer should be reported, with the correct number of significant figures, for the following calculation? (249.362 + 41)/ 63.498

Accepted Answer

A) 4.6 
B) 4.57 
C) 4.573 
D) 4.5728 
E) 4.57277 
A) 4.6 
B) 4.57 
C) 4.573 
D) 4.5728 
E) 4.57277

Question 19

Choose the pure substance from the list below.

Accepted Answer

A) sea water 
B) sugar 
C) air 
D) lemonade 
E) milk 
A) sea water 
B) sugar 
C) air 
D) lemonade 
E) milk

Question 20

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) 3.78 L 
C) 4.55 L 
D) 3.50 L 
E) 2.00 L 
A) 4.00 L 
B) 3.78 L 
C) 4.55 L 
D) 3.50 L 
E) 2.00 L

Exam 1: Units of Measurement for Physical and Chemical Change

An alligator is 244.0 cm long. How long is it in feet?

The width, length, and height of a large, custom-made shipping crate are 1.22 m, and respectively. The volume of the box using the correct number of significant figures is ________ .

Which of the following is an example of extensive properties?

Match the following. -deci

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

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

A person is 64.00 inches tall. How tall is she in cm?

Match the following. -mega

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

Determine the density of an object that has a mass of 149.8 g and displaces 12.1 mL of water when placed in a graduated cylinder.

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)

Define random error.

How many significant figures are in 3.408 × 104 m?

What answer should be reported, with the correct number of significant figures, for the following calculation? 100 × 10-1.4 + log(1.6 × 102)

Gold is an example of

Define energy.

How many cm3 are contained in 3.77 × 104 mm3?

What answer should be reported, with the correct number of significant figures, for the following calculation? (249.362 + 41)/ 63.498

Choose the pure substance 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.)

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 Metallury

Transition Metals and Coordination Compounds

Filters

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?

What answer should be reported, with the correct number of significant figures, for the following calculation? 100 × 10^-1.4 + log(1.6 × 10²)

How many cm³ are contained in 3.77 × 10⁴ mm³?