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

Without using a calculator,solve the following problem: $$\frac { \left[ \left( 1 \times 10 ^ { 4 } \right) \times \left( 1 \times 10 ^ { 3 } \right) \right] ^ { 2 } } { \left( 1 \times 10 ^ { - 9 } \right) }$$

Accepted Answer

A) 1 × 10-4 
B) 1 × 105 
C) 1 × 1023 
D) 1 × 1032 
A) 1 × 10-4 
B) 1 × 105 
C) 1 × 1023 
D) 1 × 1032

Question 3

How many significant figures are in the measurement 463.090 m?

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 5 
E) 6 
A) 2 
B) 3 
C) 4 
D) 5 
E) 6

Question 4

A solution has a temperature of 18.65 °C.What is the temperature in K?

Accepted Answer

A) 324.80 K 
B) 291.80 K 
C) 301.65 K 
D) 65.57 K 
E) 283.15 K 
A) 324.80 K 
B) 291.80 K 
C) 301.65 K 
D) 65.57 K 
E) 283.15 K

Question 5

How many ns are in 16 ms?

Accepted Answer

A) 1.6 × 10-2 ns 
B) 1.6 × 107 ns 
C) 1.6 × 10-5 ns 
D) 1.6 × 105 ns 
E) 1.6 × 102 ns 
A) 1.6 × 10-2 ns 
B) 1.6 × 107 ns 
C) 1.6 × 10-5 ns 
D) 1.6 × 105 ns 
E) 1.6 × 102 ns

Question 6

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 7

If the walls in a room are 955 square feet in area,and a gallon of paint covers 15 square yards,how many gallons of paint are needed for the room? (3 ft = 1 yd)

Accepted Answer

A) 47 gallons 
B) 21 gallons 
C) 7.1 gallons 
D) 24 gallons 
E) 2.3 gallons 
A) 47 gallons 
B) 21 gallons 
C) 7.1 gallons 
D) 24 gallons 
E) 2.3 gallons

Question 8

Gasoline is sold for $1.399 per litre in Toronto.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 
A) $16.79 
B) $67.15 
C) $4.44 
D) $63.54

Question 9

If the speed limit is 65 miles per hour,calculate the speed limit in kilometres per hour.(1 mile = 1609 m)

Accepted Answer

A) 95 km h-1 
B) 105 km h-1 
C) 80 km h-1 
D) 65 km h-1 
E) 78 km h-1 
A) 95 km h-1 
B) 105 km h-1 
C) 80 km h-1 
D) 65 km h-1 
E) 78 km h-1

Question 10

What answer should be reported,with the correct number of significant figures,for the following calculation? $\frac { ( 16.84 - 15.93 ) } { 9.6318 }$ × 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 11

Determine the volume of an object that has a mass of 455.6 g and a density of 19.3 g mL-1.

Accepted Answer

A) 87.9 mL 
B) 42.4 mL 
C) 18.5 mL 
D) 23.6 mL 
E) 31.2 mL 
A) 87.9 mL 
B) 42.4 mL 
C) 18.5 mL 
D) 23.6 mL 
E) 31.2 mL

Question 12

Which of the following represents a physical property?

Accepted Answer

A) Sodium metal is extremely reactive with chlorine gas. 
B) Mercury is a silvery liquid at room temperature. 
C) Aluminum has a tendency to "rust." 
D) Butane is highly flammable. 
E) Argon has an unreactive nature. 
A) Sodium metal is extremely reactive with chlorine gas. 
B) Mercury is a silvery liquid at room temperature. 
C) Aluminum has a tendency to "rust." 
D) Butane is highly flammable. 
E) Argon has an unreactive nature.

Question 13

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

Accepted Answer

A) a solution. 
B) a homogeneous mixture. 
C) a compound. 
D) an amorphous solid. 
E) a heterogeneous mixture. 
A) a solution. 
B) a homogeneous mixture. 
C) a compound. 
D) an amorphous solid. 
E) a heterogeneous mixture.

Question 14

How many significant figures are in the measurement 0.0005890 g?

Accepted Answer

A) 4 
B) 5 
C) 6 
D) 7 
E) 8 
A) 4 
B) 5 
C) 6 
D) 7 
E) 8

Question 15

A solution has a temperature of 68 °C.What is the temperature in K?

Accepted Answer

A) 427 K 
B) 20 K 
C) 154 K 
D) 341 K 
E) 296 K 
A) 427 K 
B) 20 K 
C) 154 K 
D) 341 K 
E) 296 K

Question 16

A student performs an experiment to determine the density of a sugar solution.She obtains the following results: 1.71 g mL-1,1.73 g mL-1,1.67 g mL-1,1.69 g mL-1.If the actual value for the density of the sugar solution is 1.40 g mL-1,which statement below best describes her results?

Accepted Answer

A) Her results are precise,but not accurate. 
B) Her results are accurate,but not precise. 
C) Her results are both precise and accurate 
D) Her results are neither precise nor accurate. 
E) It isn't possible to determine from the information given. 
A) Her results are precise,but not accurate. 
B) Her results are accurate,but not precise. 
C) Her results are both precise and accurate 
D) Her results are neither precise nor accurate. 
E) It isn't possible to determine from the information given.

Question 17

Define thermal energy.

Accepted Answer

A) energy associated with the temperature of an object 
B) energy associated with the motion of an object 
C) energy associated with the force of an object 
D) energy associated with the gravity of an object 
A) energy associated with the temperature of an object 
B) energy associated with the motion of an object 
C) energy associated with the force of an object 
D) energy associated with the gravity of an object

Question 18

The width,length,and height of a large,custom-made shipping crate are 1.31 m,3.26 m,and 0.88 m respectively.The volume of the box using the correct number of significant figures is ________ m3.

Accepted Answer

A) 3.8 
B) 3.76 
C) 3.758 
D) 3.75813 
E) 3.7558 
A) 3.8 
B) 3.76 
C) 3.758 
D) 3.75813 
E) 3.7558

Question 19

Define energy.

Accepted Answer

Energy is

Question 20

Identify the common substance that has the highest density.

Accepted Answer

A) sugar 
B) water 
C) glass 
D) lead 
E) aluminum 
A) sugar 
B) water 
C) glass 
D) lead 
E) aluminum

Exam 1: Units of Measurement for Physical and Chemical Change

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

Without using a calculator,solve the following problem: [(1×104)×(1×103)]2(1×10−9)\frac { \left[ \left( 1 \times 10 ^ { 4 } \right) \times \left( 1 \times 10 ^ { 3 } \right) \right] ^ { 2 } } { \left( 1 \times 10 ^ { - 9 } \right) }(1×10−9)[(1×104)×(1×103)]2​

How many significant figures are in the measurement 463.090 m?

A solution has a temperature of 18.65 °C.What is the temperature in K?

How many ns are in 16 ms?

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

If the walls in a room are 955 square feet in area,and a gallon of paint covers 15 square yards,how many gallons of paint are needed for the room? (3 ft = 1 yd)

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

If the speed limit is 65 miles per hour,calculate the speed limit in kilometres per hour.(1 mile = 1609 m)

What answer should be reported,with the correct number of significant figures,for the following calculation? (16.84−15.93)9.6318\frac { ( 16.84 - 15.93 ) } { 9.6318 }9.6318(16.84−15.93)​ × 12.3

Determine the volume of an object that has a mass of 455.6 g and a density of 19.3 g mL-1.

Which of the following represents a physical property?

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

How many significant figures are in the measurement 0.0005890 g?

A solution has a temperature of 68 °C.What is the temperature in K?

A student performs an experiment to determine the density of a sugar solution.She obtains the following results: 1.71 g mL-1,1.73 g mL-1,1.67 g mL-1,1.69 g mL-1.If the actual value for the density of the sugar solution is 1.40 g mL-1,which statement below best describes her results?

Define thermal energy.

The width,length,and height of a large,custom-made shipping crate are 1.31 m,3.26 m,and 0.88 m respectively.The volume of the box using the correct number of significant figures is ________ m3.

Define energy.

Identify the common substance that has the highest density.

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.

Without using a calculator,solve the following problem: $\frac { \left[ \left( 1 \times 10 ^ { 4 } \right) \times \left( 1 \times 10 ^ { 3 } \right) \right] ^ { 2 } } { \left( 1 \times 10 ^ { - 9 } \right) }$

What answer should be reported,with the correct number of significant figures,for the following calculation? $\frac { ( 16.84 - 15.93 ) } { 9.6318 }$ × 12.3

Determine the volume of an object that has a mass of 455.6 g and a density of 19.3 g mL^-1.

A student performs an experiment to determine the density of a sugar solution.She obtains the following results: 1.71 g mL^-1,1.73 g mL^-1,1.67 g mL^-1,1.69 g mL^-1.If the actual value for the density of the sugar solution is 1.40 g mL^-1,which statement below best describes her results?

The width,length,and height of a large,custom-made shipping crate are 1.31 m,3.26 m,and 0.88 m respectively.The volume of the box using the correct number of significant figures is ________ m³.