Question 1

After carrying out the following operations, how many significant figures are appropriate to how in the result
(13.7 + 0.027) / 8.221

Accepted Answer

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

Question 2

Which one of the following represents a physical change

Accepted Answer

A)  water, when heated to 100$\circ$C, forms steam 
B)  bleach turns hair yellow 
C)  sugar, when heated, becomes brown 
D)  milk turns sour 
E)  apples, when exposed to air, turn brown 
A)  water, when heated to 100$\circ$C, forms steam 
B)  bleach turns hair yellow 
C)  sugar, when heated, becomes brown 
D)  milk turns sour 
E)  apples, when exposed to air, turn brown

Question 3

Which of the following is the correct definition of matter

Accepted Answer

A)  Matter is anything that has a density greater than 1 
B)  Matter is anything that occupies space and has mass. 
C)  Matter must either be a solid or a liquid 
D)  Matter can only be a pure substance 
E)  Matter can only exist on Earth 
A)  Matter is anything that has a density greater than 1 
B)  Matter is anything that occupies space and has mass. 
C)  Matter must either be a solid or a liquid 
D)  Matter can only be a pure substance 
E)  Matter can only exist on Earth

Question 4

Express the number 0.000053 in scientific notation.

Accepted Answer

A)  5.3 * 10-2 
B)  5.3 * 10-3 
C)  5.3 * 10-4 
D)  5.3 * 10-5 
E)  5.3 * 10-6 
A)  5.3 * 10-2 
B)  5.3 * 10-3 
C)  5.3 * 10-4 
D)  5.3 * 10-5 
E)  5.3 * 10-6

Question 5

Many home freezers maintain a temperature of 0$\circ$F. Express this temperature in $\circ$C.

Accepted Answer

A)  -32$\circ$C 
B)  -18$\circ$C 
C)  0$\circ$C 
D)  18$\circ$C 
E)  57.6$\circ$C 
A)  -32$\circ$C 
B)  -18$\circ$C 
C)  0$\circ$C 
D)  18$\circ$C 
E)  57.6$\circ$C

Question 6

Boiling point is an intensive property.

Accepted Answer

A) True 
 B)False

Question 7

How many milliliters is 0.005 L

Accepted Answer

A)  0.5 mL 
B)  5 mL 
C)  0.50 mL 
D)  0.000005 mL 
E)  200 mL 
A)  0.5 mL 
B)  5 mL 
C)  0.50 mL 
D)  0.000005 mL 
E)  200 mL

Question 8

Complete the following sentence. A hypothesis is

Accepted Answer

A)  a tentative explanation for a set of observations that can be tested by further experimentation. 
B) a statement describing a relationship between phenomena that is always the same under the same conditions. 
C)  a unifying principle that explains a body of facts and relations. 
D)  a model used to visualize the invisible. 
A)  a tentative explanation for a set of observations that can be tested by further experimentation. 
B) a statement describing a relationship between phenomena that is always the same under the same conditions. 
C)  a unifying principle that explains a body of facts and relations. 
D)  a model used to visualize the invisible.

Question 9

The weight of a body varies according to the force of gravity exerted on the body.

Accepted Answer

A) True 
 B)False

Question 10

Total cost is an extensive property.

Accepted Answer

A) True 
 B)False

Question 11

What is the area, in square centimeters, of an 8.5 inch by 11 inch sheet of paper

Accepted Answer

A)  94 cm2 
B)  240 cm2 
C)  420 cm2 
D)  6.0 * 102 cm2 
E)  1.2 * 104 cm2 
A)  94 cm2 
B)  240 cm2 
C)  420 cm2 
D)  6.0 * 102 cm2 
E)  1.2 * 104 cm2

Question 12

Convert 4.5 m3 to L.

Accepted Answer

A)  4.5 x 10-1 L 
B)  4.5 x 101 L 
C)  4.5 x 10-3 L 
D)  4.5x103 L 
E)  4.5 x 102L 
A)  4.5 x 10-1 L 
B)  4.5 x 101 L 
C)  4.5 x 10-3 L 
D)  4.5x103 L 
E)  4.5 x 102L

Question 13

The ripening of fruit is a physical change.

Accepted Answer

A) True 
 B)False

Question 14

What are the common names for the solid, liquid, and gaseous states of water

Accepted Answer

A)  Ice, water, gas 
B)  Ice, water, steam 
C)  Cubes, liquid, vapor 
D)  Ice, water, plasma 
E)  Molecules, atoms, ions 
A)  Ice, water, gas 
B)  Ice, water, steam 
C)  Cubes, liquid, vapor 
D)  Ice, water, plasma 
E)  Molecules, atoms, ions

Question 15

Give the correct number of significant figures and units to the problem below. (5.62 cm - 0.45 cm)/ 342 s =

Accepted Answer

A)  1.51 x 10-2 s-1 
B)  1.5 x 10-2 cm2/s 
C)  1.51 x 10-2 cm/s 
D)  1.5 s-1 
E)  1.51 x 10-2 cm2·s 
A)  1.51 x 10-2 s-1 
B)  1.5 x 10-2 cm2/s 
C)  1.51 x 10-2 cm/s 
D)  1.5 s-1 
E)  1.51 x 10-2 cm2·s

Question 16

Iron has a density of 7.86 g/cm3. The volume occupied by 55.85 g of iron is

Accepted Answer

A) 0.141 cm3. 
B)  7.11 cm3. 
C)  2.8 cm3. 
D)  439 cm3. 
E)  None of the above. 
A) 0.141 cm3. 
B)  7.11 cm3. 
C)  2.8 cm3. 
D)  439 cm3. 
E)  None of the above.

Question 17

Bread is a mixture.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following represents the largest mass

Accepted Answer

A)  2.0 * 102 mg 
B)  0.0010 kg 
C)  1.0 * 105 ng 
D)  2.0 * 102 cg\ 
E)  10.0 dg 
A)  2.0 * 102 mg 
B)  0.0010 kg 
C)  1.0 * 105 ng 
D)  2.0 * 102 cg\ 
E)  10.0 dg

Question 19

Food spoiling is a chemical change.

Accepted Answer

A) True 
 B)False

Question 20

1.572 * 108 troy oz of silver were used in the United States in 1980. How many kilograms is this (1 troy oz = 31.1 g)

Accepted Answer

A)  4.89 * 106 kg 
B)  4.89 kg 
C)  5.05 * 106 kg 
D)  4.89 * 1012 kg 
E)  5.05 * 103 kg 
A)  4.89 * 106 kg 
B)  4.89 kg 
C)  5.05 * 106 kg 
D)  4.89 * 1012 kg 
E)  5.05 * 103 kg

Exam 1: Chemistry: The Study of Change

After carrying out the following operations, how many significant figures are appropriate to how in the result (13.7 + 0.027) / 8.221

Which one of the following represents a physical change

Which of the following is the correct definition of matter

Express the number 0.000053 in scientific notation.

Many home freezers maintain a temperature of 0 ∘\circ∘ F. Express this temperature in ∘\circ∘ C.

Boiling point is an intensive property.

How many milliliters is 0.005 L

Complete the following sentence. A hypothesis is

The weight of a body varies according to the force of gravity exerted on the body.

Total cost is an extensive property.

What is the area, in square centimeters, of an 8.5 inch by 11 inch sheet of paper

Convert 4.5 m3 to L.

The ripening of fruit is a physical change.

What are the common names for the solid, liquid, and gaseous states of water

Give the correct number of significant figures and units to the problem below. (5.62 cm - 0.45 cm)/ 342 s =

Iron has a density of 7.86 g/cm3. The volume occupied by 55.85 g of iron is

Bread is a mixture.

Which of the following represents the largest mass

Food spoiling is a chemical change.

1.572 * 108 troy oz of silver were used in the United States in 1980. How many kilograms is this (1 troy oz = 31.1 g)

Atoms Molecules and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Gases

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Periodic Relationships Among the Elements

Chemical Bonding I: Basic Concepts

Chemical Bonding II: Molecular Geometry and Hybridization of Atomic

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

Nuclear Chemistry

Chemistry in the Atmosphere

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metals Chemistry and Coordination Compounds

Organic Chemistry

Synthetic and Natural Organic Polymers

Filters

Many home freezers maintain a temperature of 0^$\circ$F. Express this temperature in ^$\circ$C.

Convert 4.5 m³ to L.

Iron has a density of 7.86 g/cm³. The volume occupied by 55.85 g of iron is

1.572 * 10⁸ troy oz of silver were used in the United States in 1980. How many kilograms is this (1 troy oz = 31.1 g)