Question 1

The symbol for the element potassium is .

Accepted Answer

A)  Ca 
B)  S 
C)  P 
D)  Pt 
E)  K 
A)  Ca 
B)  S 
C)  P 
D)  Pt 
E)  K

Question 2

The temperature of 25°C is _ in Kelvins.

Accepted Answer

A)  138 
B)  103 
C)  298 
D)  248 
E)  166 
A)  138 
B)  103 
C)  298 
D)  248 
E)  166

Question 3

Which one of the following elements has a symbol that is not derived from its foreign name?

Accepted Answer

A)  aluminum 
B)  tin 
C)  lead 
D)  copper 
E)  mercury 
A)  aluminum 
B)  tin 
C)  lead 
D)  copper 
E)  mercury

Question 4

1.035 × 10- 4 L = _ mL

Accepted Answer

Question 5

Which of the following is an illustration of the law of constant composition?

Accepted Answer

A)  Water and salt have different boiling points. 
B)  Water boils at 100°C at 1 atm pressure. 
C)  Water is a compound. 
D)  Water can be separated into other substances by a chemical process. 
E)  Water is 11% hydrogen and 89% oxygen by mass. 
A)  Water and salt have different boiling points. 
B)  Water boils at 100°C at 1 atm pressure. 
C)  Water is a compound. 
D)  Water can be separated into other substances by a chemical process. 
E)  Water is 11% hydrogen and 89% oxygen by mass.

Question 6

There should be _ significant figures in the answer to the following computation.

Accepted Answer

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

Question 7

Which of the following is the same as 0.001 cm?

Accepted Answer

A)  100 mm 
B)  1 mm 
C)  0.01 m 
D)  0.01 dm 
E)  0.01 mm 
A)  100 mm 
B)  1 mm 
C)  0.01 m 
D)  0.01 dm 
E)  0.01 mm

Question 8

The initial or tentative explanation of an observation is called a(n) _.

Accepted Answer

A)  experiment 
B)  hypothesis 
C)  theory 
D)  law 
E)  test 
A)  experiment 
B)  hypothesis 
C)  theory 
D)  law 
E)  test

Question 9

What is the volume (in cm3) of a 63.4 g piece of metal with a density of 12.86 g/cm3?

Accepted Answer

A)  .425 
B)  4.93 
C)  19.5 
D)  6.65 
E)  none of the above 
A)  .425 
B)  4.93 
C)  19.5 
D)  6.65 
E)  none of the above

Question 10

For which of the following can the composition vary?

Accepted Answer

A)  both homogeneous and heterogeneous mixtures 
B)  pure substance 
C)  homogeneous mixture 
D)  heterogeneous mixture 
E)  element 
A)  both homogeneous and heterogeneous mixtures 
B)  pure substance 
C)  homogeneous mixture 
D)  heterogeneous mixture 
E)  element

Question 11

A combination of sand, salt, and water is an example of a _.

Accepted Answer

A)  pure substance 
B)  solid 
C)  homogeneous mixture 
D)  heterogeneous mixture 
E)  compound 
A)  pure substance 
B)  solid 
C)  homogeneous mixture 
D)  heterogeneous mixture 
E)  compound

Question 12

45 m/s = km/hr

Accepted Answer

A)  1.6 × 102  
B)  2.7 
C)  1.6 × 105  
D)  0.045 
E)  2.7 × 103 
A)  1.6 × 102  
B)  2.7 
C)  1.6 × 105  
D)  0.045 
E)  2.7 × 103

Question 13

Round the number 0.08535 to two significant figures.

Accepted Answer

A)  0.086 
B)  0.08535 
C)  0.09 
D)  0.085 
E)  0.0854 
A)  0.086 
B)  0.08535 
C)  0.09 
D)  0.085 
E)  0.0854

Question 14

A separation process that depends on differing abilities of substances to form gases is called

Accepted Answer

A)  solvation 
B)  all of the above are correct 
C)  filtration 
D)  distillation 
E)  chromatography 
A)  solvation 
B)  all of the above are correct 
C)  filtration 
D)  distillation 
E)  chromatography

Question 15

Temperature is a physical property that determines the direction of heat flow.

Accepted Answer

A) True 
 B)False

Question 16

is the chemical symbol for elemental sodium.

Accepted Answer

A)  S 
B)  Na 
C)  W 
D)  Sn 
E)  So 
A)  S 
B)  Na 
C)  W 
D)  Sn 
E)  So

Question 17

Sn is the symbol for the element _.

Accepted Answer

The answer of Sn is the symbol for the element...

Question 18

The density of air under ordinary conditions at 25°C is 1.19 g/L. How many kilograms of air is in a room that measures 11.0 ft × 11.0 ft and has an 10.0 ft ceiling? 1 in. = 2.54 cm (exactly);
1 L = 103 cm3

Accepted Answer

A)  0.0962 
B)  4.08 × 104  
C)  40.8 
D)  3.66 
E)  0.152 
A)  0.0962 
B)  4.08 × 104  
C)  40.8 
D)  3.66 
E)  0.152

Question 19

A cube of an unknown metal measures 1.61 mm on one side. The mass of the cube is 36 mg. Which of the following is most likely the unknown metal?

Accepted Answer

A)  vanadium 
B)  zirconium 
C)  copper 
D)  niobium 
E)  rhodium 
A)  vanadium 
B)  zirconium 
C)  copper 
D)  niobium 
E)  rhodium

Question 20

Accepted Answer

A)  1.1 × 102  
B)  113.74 
C)  113.7 
D)  113.73635 
E)  113.736 
A)  1.1 × 102  
B)  113.74 
C)  113.7 
D)  113.73635 
E)  113.736

Exam 1: Introduction: Matter and Measurement

The symbol for the element potassium is .

The temperature of 25°C is _ in Kelvins.

Which one of the following elements has a symbol that is not derived from its foreign name?

1.035 × 10- 4 L = _ mL

Which of the following is an illustration of the law of constant composition?

There should be _ significant figures in the answer to the following computation.

Which of the following is the same as 0.001 cm?

The initial or tentative explanation of an observation is called a(n) _.

What is the volume (in cm3) of a 63.4 g piece of metal with a density of 12.86 g/cm3?

For which of the following can the composition vary?

A combination of sand, salt, and water is an example of a _.

45 m/s = km/hr

Round the number 0.08535 to two significant figures.

A separation process that depends on differing abilities of substances to form gases is called

Temperature is a physical property that determines the direction of heat flow.

is the chemical symbol for elemental sodium.

Sn is the symbol for the element _.

The density of air under ordinary conditions at 25°C is 1.19 g/L. How many kilograms of air is in a room that measures 11.0 ft × 11.0 ft and has an 10.0 ft ceiling? 1 in. = 2.54 cm (exactly); 1 L = 103 cm3

A cube of an unknown metal measures 1.61 mm on one side. The mass of the cube is 36 mg. Which of the following is most likely the unknown metal?

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Gases

Intermolecular Forces, Liquids, and Solids

Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Chemistry of Coordination Compounds

The Chemistry of Life: Organic and Biological Chemistry

Filters

1.035 × 10^-⁴L = _ mL

What is the volume (in cm³) of a 63.4 g piece of metal with a density of 12.86 g/cm³?

The density of air under ordinary conditions at 25°C is 1.19 g/L. How many kilograms of air is in a room that measures 11.0 ft × 11.0 ft and has an 10.0 ft ceiling? 1 in. = 2.54 cm (exactly); 1 L = 10³cm³