Question 1

Analysis shows the presence of 203 m g of cholesterol in a sample of blood. How many grams of cholesterol are present in this blood sample?

Accepted Answer

A)  2.03×10 - 6 g 
B)  2.03×10 - 4 g 
C)  2.03×102 g 
D)  2.03×106 g 
E)  2.03×108 g 
A)  2.03×10 - 6 g 
B)  2.03×10 - 4 g 
C)  2.03×102 g 
D)  2.03×106 g 
E)  2.03×108 g B

Question 2

In the reported measurement of 24.0 mm, what digit is uncertain ?

Accepted Answer

A)  tens place 
B)  in the ones place 
C)  in the tenths place 
D)  in the hundredths place 
E)  All places are reported with certainty. 
A)  tens place 
B)  in the ones place 
C)  in the tenths place 
D)  in the hundredths place 
E)  All places are reported with certainty. C

Question 3

Which metric prefix listed below has a power of 10 - 12 associated with it?

Accepted Answer

A)  centi 
B)  micro 
C)  milli 
D)  kilo 
E)  pico 
A)  centi 
B)  micro 
C)  milli 
D)  kilo 
E)  pico E

Question 4

What is the volume of 25.0 g of an oil if its density is 0.843 g/mL?

Accepted Answer

A)  29.7 mL 
B)  21.1 mL 
C)  15.2 mL 
D)  38.4 mL 
E)  211 mL 
A)  29.7 mL 
B)  21.1 mL 
C)  15.2 mL 
D)  38.4 mL 
E)  211 mL

Question 5

The diameter of a US Quarter is approximately 2.35 cm. What is the diameter of a quarter expressed in km and scientific notation ?

Accepted Answer

A)  2.35×10 - 5 km 
B)  2.35×105 km 
C)  2.35×10 - 2 km 
D)  23.5×10 - 4 km 
E)  2.35 km 
A)  2.35×10 - 5 km 
B)  2.35×105 km 
C)  2.35×10 - 2 km 
D)  23.5×10 - 4 km 
E)  2.35 km

Question 6

All of the following are properties of Magnesium. Which would be considered a chemical property of magnesium?
I. Magnesium burns in air to produce a white substance known as magnesium oxide.
II. Magnesium dissolves in acidic water to produce hydrogen gas.
III. The density of magnesium is 1.738 g/mL.

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  I and II 
E)  all of these 
A)  I 
B)  II 
C)  III 
D)  I and II 
E)  all of these

Question 7

A car travels 28.0 miles per gallon of gasoline. How many kilometers per liter will it go?
(1 mile = 1.6093 km and 1 gallon = 3.7854 L)

Accepted Answer

A)  5.86×10 - 3 km/L 
B)  4.60 km/L 
C)  11.9 km/L 
D)  65.9 km/L 
E)  170 km/L 
A)  5.86×10 - 3 km/L 
B)  4.60 km/L 
C)  11.9 km/L 
D)  65.9 km/L 
E)  170 km/L

Question 8

Which of the following is not a physical change?

Accepted Answer

A)  ice melting 
B)  dry ice subliming 
C)  a light-bulb glowing 
D)  beef cooking 
E)  distilling alcohol 
A)  ice melting 
B)  dry ice subliming 
C)  a light-bulb glowing 
D)  beef cooking 
E)  distilling alcohol

Question 9

Which metric prefix(es) listed below is(are) correctly assigned the proper power of ten?
I. giga:
109
II. micro:
106
III. nano:
10 - 12

Accepted Answer

A)  I only 
B)  II only 
C)  III only 
D)  I and II 
E)  II and III 
A)  I only 
B)  II only 
C)  III only 
D)  I and II 
E)  II and III

Question 10

The following are properties of sodium metal. Which would be considered a chemical property of sodium metal?

Accepted Answer

A)  Sodium is a silvery-white metal 
B)  Sodium has a melting point of 98 ° C 
C)  Sodium has a density equal to 0.968 g/mL. 
D)  Sodium reacts with water violently to produce hydrogen gas. 
E)  Sodium metal is drawn into a magnetic field. 
A)  Sodium is a silvery-white metal 
B)  Sodium has a melting point of 98 ° C 
C)  Sodium has a density equal to 0.968 g/mL. 
D)  Sodium reacts with water violently to produce hydrogen gas. 
E)  Sodium metal is drawn into a magnetic field.

Question 11

What is the volume of a 100.0 gram bar of silver metal?
(Density of Silver = 10.40 g/mL)

Accepted Answer

A)  9.615×10 - 4 mL 
B)  1.040×10 - 1 mL 
C)  9.615 mL 
D)  1.040×103 mL 
E)  100.0 mL 
A)  9.615×10 - 4 mL 
B)  1.040×10 - 1 mL 
C)  9.615 mL 
D)  1.040×103 mL 
E)  100.0 mL

Question 12

What mass of platinum occupies a volume of 75.00 cm3?
(Density of platinum = 21.45 g/cm3)

Accepted Answer

A)  0.2860 g 
B)  3.497 g 
C)  21.45 g 
D)  75.00 g 
E)  1609 g 
A)  0.2860 g 
B)  3.497 g 
C)  21.45 g 
D)  75.00 g 
E)  1609 g

Question 13

The area of a US quarter is approximately 4.5×102 mm2. What is the area of a US quarter in square inches, (in2)?
(1 in = 2.54 cm)

Accepted Answer

A)  7.0×10 - 1 in2 
B)  1.8×101 in2 
C)  2.9×105 in2 
D)  1.8×10 - 1 in2 
E)  1.1×104 in2 
A)  7.0×10 - 1 in2 
B)  1.8×101 in2 
C)  2.9×105 in2 
D)  1.8×10 - 1 in2 
E)  1.1×104 in2

Question 14

Which of the following would be considered a physical change ?

Accepted Answer

A)  gasoline burning 
B)  salt dissolving in water 
C)  food spoiling 
D)  iron rusting 
E)  a battery discharging 
A)  gasoline burning 
B)  salt dissolving in water 
C)  food spoiling 
D)  iron rusting 
E)  a battery discharging

Question 15

Which metric prefix(es) listed below is(are) correctly assigned the proper power of ten?
I. deci:
101
II. nano:
10 - 6
III. mega:
106

Accepted Answer

A)  I only 
B)  II only 
C)  III only 
D)  I and II 
E)  All of these 
A)  I only 
B)  II only 
C)  III only 
D)  I and II 
E)  All of these

Question 16

The number 0.00042 is equal to:

Accepted Answer

A)  4.2×104 
B)  4.2×10 - 4 
C)  4.2×103 
D)  4.2×10 - 3 
E)  4.2×10 - 2 
A)  4.2×104 
B)  4.2×10 - 4 
C)  4.2×103 
D)  4.2×10 - 3 
E)  4.2×10 - 2

Question 17

What prefix is used to indicate a base unit multiplied by 10 - 1?

Accepted Answer

A)  deca 
B)  centi 
C)  milli 
D)  deci 
E)  micro 
A)  deca 
B)  centi 
C)  milli 
D)  deci 
E)  micro

Question 18

The number 486,000 is equal to:

Accepted Answer

A)  4.86×102 
B)  4.86×10 - 4 
C)  4.86×103 
D)  4.86×104 
E)  4.86×105 
A)  4.86×102 
B)  4.86×10 - 4 
C)  4.86×103 
D)  4.86×104 
E)  4.86×105

Question 19

Properly expressed, the answer to the mathematical manipulation (0.243×4.2) + 21 = is:

Accepted Answer

A)  22 
B)  22.0 
C)  2.2×102 
D)  22.02 
E)  2.202×102 
A)  22 
B)  22.0 
C)  2.2×102 
D)  22.02 
E)  2.202×102

Question 20

Which of the following studies is not considered to be "Chemistry?"

Accepted Answer

A)  Studying the interactions between energy and matter. 
B)  Classifying elements into metallic, nonmetallic or semimetallic. 
C)  Studying the interactions between matter and other matter 
D)  Removing harmful impurities from a synthetic drug. 
E)  Separating the light spectrum into its component colors. 
A)  Studying the interactions between energy and matter. 
B)  Classifying elements into metallic, nonmetallic or semimetallic. 
C)  Studying the interactions between matter and other matter 
D)  Removing harmful impurities from a synthetic drug. 
E)  Separating the light spectrum into its component colors.

Exam 1: Introduction to Chemistry

Analysis shows the presence of 203 m g of cholesterol in a sample of blood. How many grams of cholesterol are present in this blood sample?

In the reported measurement of 24.0 mm, what digit is uncertain ?

Which metric prefix listed below has a power of 10 - 12 associated with it?

What is the volume of 25.0 g of an oil if its density is 0.843 g/mL?

The diameter of a US Quarter is approximately 2.35 cm. What is the diameter of a quarter expressed in km and scientific notation ?

A car travels 28.0 miles per gallon of gasoline. How many kilometers per liter will it go? (1 mile = 1.6093 km and 1 gallon = 3.7854 L)

Which of the following is not a physical change?

Which metric prefix(es) listed below is(are) correctly assigned the proper power of ten? I. giga: 109 II. micro: 106 III. nano: 10 - 12

The following are properties of sodium metal. Which would be considered a chemical property of sodium metal?

What is the volume of a 100.0 gram bar of silver metal? (Density of Silver = 10.40 g/mL)

What mass of platinum occupies a volume of 75.00 cm3? (Density of platinum = 21.45 g/cm3)

The area of a US quarter is approximately 4.5×102 mm2. What is the area of a US quarter in square inches, (in2)? (1 in = 2.54 cm)

Which of the following would be considered a physical change ?

Which metric prefix(es) listed below is(are) correctly assigned the proper power of ten? I. deci: 101 II. nano: 10 - 6 III. mega: 106

The number 0.00042 is equal to:

What prefix is used to indicate a base unit multiplied by 10 - 1?

The number 486,000 is equal to:

Properly expressed, the answer to the mathematical manipulation (0.243×4.2) + 21 = is:

Which of the following studies is not considered to be "Chemistry?"

Atoms, Molecules, and Ions

Equations, the Mole, and Chemical Formulas

Chemical Reactions in Solution

Thermochemistry

The Gaseous State

Electronic Structure

The Periodic Table: Structure and Trends

Chemical Bonds

Molecular Structure and Bonding Theories

Liquids and Solids

Solutions

Chemical Kinetics

Chemical Equilibrium

Solutions of Acids and Bases

Reactions Between Acids and Bases

Chemical Thermodynamics

Electrochemistry

Transition Metals, Coordination Chemistry and Metallurgy

The Chemistry of Hydrogen, Elements in Groups 3A Through 6A, and the Noble Gases

Nuclear Chemistry

Organic Chemistry and Biochemistry

Filters

Which metric prefix listed below has a power of 10^{- 12} associated with it?

Which metric prefix(es) listed below is(are) correctly assigned the proper power of ten? I. giga: 10⁹ II. micro: 10⁶ III. nano: 10^{- 12}

What mass of platinum occupies a volume of 75.00 cm³? (Density of platinum = 21.45 g/cm³)

The area of a US quarter is approximately 4.5×10² mm². What is the area of a US quarter in square inches, (in²)? (1 in = 2.54 cm)

Which metric prefix(es) listed below is(are) correctly assigned the proper power of ten? I. deci: 10¹ II. nano: 10^{- 6} III. mega: 10⁶

What prefix is used to indicate a base unit multiplied by 10^{- 1}?