Question 1

Choose the pure substance from the list below.

Accepted Answer

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

Question 2

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)  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 3

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

Question 4

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. 
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 5

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

Question 6

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. 
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 7

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

Accepted Answer

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

Question 8

Identify a unit that is used for area.

Accepted Answer

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

Question 9

Identify the exact number.

Accepted Answer

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

Question 10

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 11

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

Question 12

Define the law of the conservation of energy.

Accepted Answer

Energy is

Question 13

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

Question 14

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

Question 15

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

Question 16

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 17

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

Accepted Answer

The Answer of 10S1U1P1-1S1S1P0 and 10S1U1P13S1S1P0 and 10S1U1P1-2S1S1P0 and 10S1U1P16S1S1P0 is...

Question 18

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

Question 19

Choose the element from the list below.

Accepted Answer

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

Question 20

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 
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

Exam 1: Matter, measurement, and Problem Solving

Choose the pure substance from the list below.

Distillation is

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?

Which of the following are examples of physical change?

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

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

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

Identify a unit that is used for area.

Identify the exact number.

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

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

Define the law of the conservation of energy.

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

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

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

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

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

Choose the element from the list below.

How many mg does an 830 kg sample contain?

Atoms and Elements

Molecules,compounds,and Chemical Equations

Chemical Quantities and Aqueous Reactions

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,

Liquids,solids,and Intermolecular Forces

Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

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

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