Question 1

Which of the following is a chemical?

Accepted Answer

A)  sugar 
B)  heat 
C)  light 
D)  noise 
E)  a wave 
A)  sugar 
B)  heat 
C)  light 
D)  noise 
E)  a wave A

Question 2

Which of the following would not be part of a study plan to learn chemistry?

Accepted Answer

A)  study a little every day 
B)  skip your instructor's office hours 
C)  form a study group 
D)  read the chapter before class 
E)  work the sample problems 
A)  study a little every day 
B)  skip your instructor's office hours 
C)  form a study group 
D)  read the chapter before class 
E)  work the sample problems B

Question 3

Which of the following examples illustrates a number that is correctly rounded to three significant figures?

Accepted Answer

A)  4.05438 grams to 4.054 grams 
B)  0.03954 grams to 0.040 grams 
C)  103.692 grams to 103.7 grams 
D)  109,526 grams to 109 500 grams 
E)  20.0332 grams to 20.0 grams 
A)  4.05438 grams to 4.054 grams 
B)  0.03954 grams to 0.040 grams 
C)  103.692 grams to 103.7 grams 
D)  109,526 grams to 109 500 grams 
E)  20.0332 grams to 20.0 grams E

Question 4

Which of the following is not a chemical?

Accepted Answer

A)  salt 
B)  sound 
C)  sugar 
D)  zinc 
E)  silver 
A)  salt 
B)  sound 
C)  sugar 
D)  zinc 
E)  silver

Question 5

Which of the following is a measurement of mass in the metric system?

Accepted Answer

A)  oz 
B)  lb 
C)  Celsius 
D)  kilogram 
E)  meter 
A)  oz 
B)  lb 
C)  Celsius 
D)  kilogram 
E)  meter

Question 6

The cubic centimeter (cm3 or cc) has the same volume as a

Accepted Answer

A)  cubic inch. 
B)  cubic liter. 
C)  milliliter. 
D)  centimeter. 
E)  cubic decimeter. 
A)  cubic inch. 
B)  cubic liter. 
C)  milliliter. 
D)  centimeter. 
E)  cubic decimeter.

Question 7

How many kilograms are in 30.4 lb?

Accepted Answer

A)  13.8 kg 
B)  14 kg 
C)  67 kg 
D)  66.88 kg 
E)  66.9 kg 
A)  13.8 kg 
B)  14 kg 
C)  67 kg 
D)  66.88 kg 
E)  66.9 kg

Question 8

Which of the following measurements has three significant figures?

Accepted Answer

A)  0.005 m 
B)  510 m 
C)  0.510 m 
D)  0.051 m 
E)  5100 m 
A)  0.005 m 
B)  510 m 
C)  0.510 m 
D)  0.051 m 
E)  5100 m

Question 9

A value of 25 °C is a measurement of

Accepted Answer

A)  distance. 
B)  volume. 
C)  temperature. 
D)  mass. 
E)  density. 
A)  distance. 
B)  volume. 
C)  temperature. 
D)  mass. 
E)  density.

Question 10

9.31 g is the same mass as

Accepted Answer

A)  931 μg. 
B)  931 kg. 
C)  93.1 cg. 
D)  9310 mg. 
E)  0.0931 dg. 
A)  931 μg. 
B)  931 kg. 
C)  93.1 cg. 
D)  9310 mg. 
E)  0.0931 dg.

Question 11

Significant figures are important because they indicate

Accepted Answer

A)  the accuracy of a measurement. 
B)  the number of digits on a calculator. 
C)  the number of measurements. 
D)  the precision of a measurement. 
E)  the accuracy of the conversion factor. 
A)  the accuracy of a measurement. 
B)  the number of digits on a calculator. 
C)  the number of measurements. 
D)  the precision of a measurement. 
E)  the accuracy of the conversion factor.

Question 12

Which of the following is the smallest unit?

Accepted Answer

A)  gram 
B)  milligram 
C)  kilogram 
D)  decigram 
E)  microgram 
A)  gram 
B)  milligram 
C)  kilogram 
D)  decigram 
E)  microgram

Question 13

Diamond has a density of 3.52 g/mL. What is the volume in cubic centimeters of a diamond with a mass of 15.1 g?

Accepted Answer

A)  4.3 cm3 
B)  4.29 cm3 
C)  0.233 cm3 
D)  53 cm3 
E)  53.2 cm3 
A)  4.3 cm3 
B)  4.29 cm3 
C)  0.233 cm3 
D)  53 cm3 
E)  53.2 cm3

Question 14

Which of the following has the smallest mass?

Accepted Answer

A)  4.0 × 10-6 g 
B)  4.0 × 109 ng 
C)  4.0 × 10-2 μg 
D)  4.0 × 10-3 kg 
E)  4.0 × 10-6 mm 
A)  4.0 × 10-6 g 
B)  4.0 × 109 ng 
C)  4.0 × 10-2 μg 
D)  4.0 × 10-3 kg 
E)  4.0 × 10-6 mm

Question 15

What is the mass of 2.00 L of an intravenous glucose solution with a density of 1.15 g/mL?

Accepted Answer

A)  0.023 kg 
B)  2.30 kg 
C)  1.15 kg 
D)  0.015 kg 
E)  0.58 kg 
A)  0.023 kg 
B)  2.30 kg 
C)  1.15 kg 
D)  0.015 kg 
E)  0.58 kg

Question 16

The amount of space occupied by a substance is its

Accepted Answer

A)  mass. 
B)  density. 
C)  weight. 
D)  length. 
E)  volume. 
A)  mass. 
B)  density. 
C)  weight. 
D)  length. 
E)  volume.

Question 17

The EPA limit for lead in the soil of play areas is 400 ppm. This is the same as

Accepted Answer

A)  400 mg lead in each gram of soil. 
B)  400 g lead in each kilogram of soil. 
C)  400 mg lead in each kilogram of soil. 
D)  400 µg lead in each kilogram of soil. 
E)  400 µg lead in each milligram of soil. 
A)  400 mg lead in each gram of soil. 
B)  400 g lead in each kilogram of soil. 
C)  400 mg lead in each kilogram of soil. 
D)  400 µg lead in each kilogram of soil. 
E)  400 µg lead in each milligram of soil.

Question 18

Which of the following measurements are NOT equivalent?

Accepted Answer

A)  25 mg = 0.025 g 
B)  183 L = 0.183 kL 
C)  150. msec = 0.150 sec 
D)  84 cm = 8.4 mm 
E)  24 dL = 2.4 L 
A)  25 mg = 0.025 g 
B)  183 L = 0.183 kL 
C)  150. msec = 0.150 sec 
D)  84 cm = 8.4 mm 
E)  24 dL = 2.4 L

Question 19

Which of the following is the basic unit of mass in the SI?

Accepted Answer

A)  pound 
B)  kilogram 
C)  milligram 
D)  microgram 
E)  gram 
A)  pound 
B)  kilogram 
C)  milligram 
D)  microgram 
E)  gram

Question 20

In order to enhance your learning in chemistry, you should not __________.

Accepted Answer

A)  study a little every day 
B)  form a study group 
C)  go to office hours 
D)  be an active learner 
E)  wait until the night before the exam to study 
A)  study a little every day 
B)  form a study group 
C)  go to office hours 
D)  be an active learner 
E)  wait until the night before the exam to study

Exam 1: Chemistry and Measurements

Which of the following is a chemical?

Which of the following would not be part of a study plan to learn chemistry?

Which of the following examples illustrates a number that is correctly rounded to three significant figures?

Which of the following is not a chemical?

Which of the following is a measurement of mass in the metric system?

The cubic centimeter (cm3 or cc) has the same volume as a

How many kilograms are in 30.4 lb?

Which of the following measurements has three significant figures?

A value of 25 °C is a measurement of

9.31 g is the same mass as

Significant figures are important because they indicate

Which of the following is the smallest unit?

Diamond has a density of 3.52 g/mL. What is the volume in cubic centimeters of a diamond with a mass of 15.1 g?

Which of the following has the smallest mass?

What is the mass of 2.00 L of an intravenous glucose solution with a density of 1.15 g/mL?

The amount of space occupied by a substance is its

The EPA limit for lead in the soil of play areas is 400 ppm. This is the same as

Which of the following measurements are NOT equivalent?

Which of the following is the basic unit of mass in the SI?

In order to enhance your learning in chemistry, you should not __________.

Energy and Matter

Atoms and Elements

Nuclear Chemistry

Compounds and Their Bonds

Chemical Reactions and Quantities

Gases

Solutions

Reaction Rates and Chemical Equilibrium

Acids and Bases

Introduction to Organic Chemistry: Alkanes

Alkenes, Alkynes, and Aromatic Compounds

Alcohols, Phenols, Thiols, and Ethers

Aldehydes, Ketones, and Chiral Molecules

Carbohydrates

Carboxylic Acids and Esters

Lipids

Amines and Amides

Amino Acids and Proteins

Enzymes and Vitamins

Nucleic Acids and Protein Synthesis

Metabolic Pathways for Carbohydrates

Metabolism and Energy Production

Metabolic Pathways for Lipids and Amino Acids

Filters

The cubic centimeter (cm³ or cc) has the same volume as a