Question 1

Which measurement has the fewest number of significant figures?

Accepted Answer

A) 12.80 m 
B) 0.1280 m 
C) 0.001280 m 
D) 1280 m 
E) All of the measurements have the same number of significant figures. 
A) 12.80 m 
B) 0.1280 m 
C) 0.001280 m 
D) 1280 m 
E) All of the measurements have the same number of significant figures.

Question 2

A compound cannot be broken down into simpler substances.

Accepted Answer

A) True 
 B)False

Question 3

If honey has a density of 1.36 g/mL, what is the mass of 1.25 qt, reported in kilograms?

Accepted Answer

A) 1.60 kg 
B) 1.6 × 103 kg 
C) 0.974 kg 
D) 974 kg 
E) 1.80 kg 
A) 1.60 kg 
B) 1.6 × 103 kg 
C) 0.974 kg 
D) 974 kg 
E) 1.80 kg

Question 4

When subtracting 15 from 762.85 the answer should be reported with two significant figures.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following temperatures is the hottest?

Accepted Answer

A) 100 °C 
B) 100 °F 
C) 100 K 
D) All would feel equally warm. 
A) 100 °C 
B) 100 °F 
C) 100 K 
D) All would feel equally warm.

Question 6

The terms used in conversion factors must always be exact numbers.

Accepted Answer

A) True 
 B)False

Question 7

The number 900, 027, 300 has nine significant figures.

Accepted Answer

A) True 
 B)False

Question 8

Carry out the following calculation and report the answer using the proper number of significant figures: 38.251 + 73.1

Accepted Answer

A) 111 
B) 111.3 
C) 111.4 
D) 111.35 
E) 111.351 
A) 111 
B) 111.3 
C) 111.4 
D) 111.35 
E) 111.351

Question 9

Changes in state such as melting and boiling are physical changes.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following conversions is correct and expresses the answer using the proper number of significant figures?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 11

Air has a density of 0.001226 g/mL. What volume of air would have a mass of 1.0 lb?

Accepted Answer

A) 2.7 mL 
B) 815.6 mL 
C) 37 mL 
D) 3.7 x 102 L 
A) 2.7 mL 
B) 815.6 mL 
C) 37 mL 
D) 3.7 x 102 L

Question 12

Which quantity is an exact number?

Accepted Answer

A) 3 cars 
B) 1, 000 m 
C) 2 L 
D) 453.6 g 
A) 3 cars 
B) 1, 000 m 
C) 2 L 
D) 453.6 g

Question 13

What is the density of a sample of rubbing alcohol if it has a specific gravity of 0.789?

Accepted Answer

A) 1.27 g/mL 
B) 0.789 g/mL 
C) 1.00 g/mL 
D) 0.895 g/mL 
A) 1.27 g/mL 
B) 0.789 g/mL 
C) 1.00 g/mL 
D) 0.895 g/mL

Question 14

The measurement 78, 005, 760 expressed correctly using scientific notation is

Accepted Answer

A) 7.8005760 × 107 
B) 7.8005760 × 10-7 
C) 7.8 × 107 
D) 7.800576 × 10-7 
E) 7.800576 × 107 
A) 7.8005760 × 107 
B) 7.8005760 × 10-7 
C) 7.8 × 107 
D) 7.800576 × 10-7 
E) 7.800576 × 107

Question 15

Which volume is equivalent to 225 mL?

Accepted Answer

A) 2.25 × 105 $\mu$L 
B) 2.25 × 102 $\mu$L 
C) 2.25 L 
D) 2.25 × 10-5 $\mu$L 
E) 0.225 $\mu$L 
A) 2.25 × 105 $\mu$L 
B) 2.25 × 102 $\mu$L 
C) 2.25 L 
D) 2.25 × 10-5 $\mu$L 
E) 0.225 $\mu$L

Question 16

The base unit for volume in the metric system is liter (L).

Accepted Answer

A) True 
 B)False

Question 17

Carry out the following calculation and report the answer using the proper number of significant figures: 549.101 + 8.12 + 95.0076 - 651.9

Accepted Answer

A) 3.286 
B) 0.3286 
C) 0.33 
D) 0.3 
E) 1268.1 
A) 3.286 
B) 0.3286 
C) 0.33 
D) 0.3 
E) 1268.1

Question 18

When 0.022189 is correctly rounded to two significant figures the number becomes

Accepted Answer

A) 0.02 
B) 0.022 
C) 22 
D) 0.023 
A) 0.02 
B) 0.022 
C) 22 
D) 0.023

Question 19

For a number written in scientific notation, a negative exponent indicates the value of the number is less than 1.

Accepted Answer

A) True 
 B)False

Question 20

Which length is the longest?

Accepted Answer

A) 12 m 
B) 12, 000 mm 
C) 12, 000 $\mu$m 
D) 12, 000 cm 
E) 0.0012 km 
A) 12 m 
B) 12, 000 mm 
C) 12, 000 $\mu$m 
D) 12, 000 cm 
E) 0.0012 km

Exam 1: Matter and Measurement

Which measurement has the fewest number of significant figures?

A compound cannot be broken down into simpler substances.

If honey has a density of 1.36 g/mL, what is the mass of 1.25 qt, reported in kilograms?

When subtracting 15 from 762.85 the answer should be reported with two significant figures.

Which of the following temperatures is the hottest?

The terms used in conversion factors must always be exact numbers.

The number 900, 027, 300 has nine significant figures.

Carry out the following calculation and report the answer using the proper number of significant figures: 38.251 + 73.1

Changes in state such as melting and boiling are physical changes.

Which of the following conversions is correct and expresses the answer using the proper number of significant figures?

Air has a density of 0.001226 g/mL. What volume of air would have a mass of 1.0 lb?

Which quantity is an exact number?

What is the density of a sample of rubbing alcohol if it has a specific gravity of 0.789?

The measurement 78, 005, 760 expressed correctly using scientific notation is

Which volume is equivalent to 225 mL?

The base unit for volume in the metric system is liter (L).

Carry out the following calculation and report the answer using the proper number of significant figures: 549.101 + 8.12 + 95.0076 - 651.9

When 0.022189 is correctly rounded to two significant figures the number becomes

For a number written in scientific notation, a negative exponent indicates the value of the number is less than 1.

Which length is the longest?

Atoms and the Periodic Table

Ionic Compounds

Covalent Compounds

Chemical Reactions

Energy Changes, Reaction Rates, and Equilibrium

Gases, Liquids, and Solids

Solutions

Acids and Bases

Nuclear Chemistry

Introduction to Organic Molecules and Functional Groups

Alkanes

Unsaturated Hydrocarbons

Organic Compounds That Contain Oxygen, Halogen, or Sulfur

The Three-Dimensional Shape of Molecules

Aldehydes and Ketones

Carboxylic Acids, Esters, and Amides

Amines and Neurotransmitters

Lipids

Carbohydrates

Amino Acids, Proteins, and Enzymes

Nucleic Acids and Protein Synthesis

Digestion and the Conversion of Food Into Energy

Carbohydrate, Lipid, and Protein Metabolism

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