Question 1

What Celsius temperature corresponds to -4.6°F?

Accepted Answer

A) -20°C 
B) -20.3°C 
C) -23.0°C 
D) -10.9°C 
E) -68.4°C 
A) -20°C 
B) -20.3°C 
C) -23.0°C 
D) -10.9°C 
E) -68.4°C

Question 2

Mass is the force resulting from the pull of gravity upon an object.

Accepted Answer

A) True 
 B)False

Question 3

Which measurement represents the largest volume?

Accepted Answer

A) 4.6 L 
B) 4.6 × 10−3 L 
C) 46 cL 
D) 460 mL 
E) All represent the same volume. 
A) 4.6 L 
B) 4.6 × 10−3 L 
C) 46 cL 
D) 460 mL 
E) All represent the same volume.

Question 4

Energy may be defined as the heat content of an object.

Accepted Answer

A) True 
 B)False

Question 5

Which one of the following is an example of a pure substance?

Accepted Answer

A) ethanol 
B) sugar water 
C) salt and pepper 
D) milk 
E) sand 
A) ethanol 
B) sugar water 
C) salt and pepper 
D) milk 
E) sand

Question 6

Which process depicts a physical change?

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
E) None of the processes above depicts a physical change. 
A) 
  
B) 
  
C) 
  
D) 
  
E) None of the processes above depicts a physical change.

Question 7

The cost of a drug is 125 francs per gram.What is the cost in dollars per ounce? 
[$1 = 6.25 francs and 1 ounce = 28.4 g]

Accepted Answer

A) $0.70/oz 
B) $568/oz 
C) $27.5/oz 
D) $2.22 × 104/oz 
E) $4.65/oz 
A) $0.70/oz 
B) $568/oz 
C) $27.5/oz 
D) $2.22 × 104/oz 
E) $4.65/oz

Question 8

What method used by scientists is the systematic approach to the discovery of new information?

Accepted Answer

A) analytical method 
B) hypothetical method 
C) chemical method 
D) technological method 
E) scientific method 
A) analytical method 
B) hypothetical method 
C) chemical method 
D) technological method 
E) scientific method

Question 9

What is density?

Accepted Answer

A) the ratio of the number of particles of a substance to the volume of the solution in which it is dissolved 
B) the ratio of the mass of a substance to the volume of the substance 
C) the ratio of the volume of a substance to the mass of the substance 
D) the ratio of the moles of a substance to the volume of the solution in which it is dissolved 
E) the measure of the amount of heat an object contains 
A) the ratio of the number of particles of a substance to the volume of the solution in which it is dissolved 
B) the ratio of the mass of a substance to the volume of the substance 
C) the ratio of the volume of a substance to the mass of the substance 
D) the ratio of the moles of a substance to the volume of the solution in which it is dissolved 
E) the measure of the amount of heat an object contains

Question 10

NaCl is best classified as a/an

Accepted Answer

A) pure substance. 
B) element. 
C) compound. 
D) homogeneous mixture. 
E) Both pure substance and compound are correct. 
A) pure substance. 
B) element. 
C) compound. 
D) homogeneous mixture. 
E) Both pure substance and compound are correct.

Question 11

Which state of matter has neither a definite shape nor a definite volume?

Accepted Answer

A) liquid 
B) solid 
C) gas 
D) vapor 
E) Both gas and vapor are correct. 
A) liquid 
B) solid 
C) gas 
D) vapor 
E) Both gas and vapor are correct.

Question 12

Which diagram represents a mixture? Note: different colored circles represent atoms of different elements.

Accepted Answer

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

Question 13

According to the Study Cycle,what is the recommended study session format?

Accepted Answer

A) Establish goal in first 1 min,study with focus for 10-20 min,take a 5-10 min break,and then review another 5 min. 
B) Study with focus for 30-50 min,take a 10-20 min break,and then review another 10-20 min. 
C) Study with focus for 50 min,take a 50 min break,and then review another 10-20 min. 
D) Study with focus for 30-50 min,take a 10-20 min break,and then review another 30-50 min. 
E) Establish goal in first 2-5 min,study with focus for 30-50 min,take a 5-10 min break,and then review another 5 min. 
A) Establish goal in first 1 min,study with focus for 10-20 min,take a 5-10 min break,and then review another 5 min. 
B) Study with focus for 30-50 min,take a 10-20 min break,and then review another 10-20 min. 
C) Study with focus for 50 min,take a 50 min break,and then review another 10-20 min. 
D) Study with focus for 30-50 min,take a 10-20 min break,and then review another 30-50 min. 
E) Establish goal in first 2-5 min,study with focus for 30-50 min,take a 5-10 min break,and then review another 5 min.

Question 14

1 centimeter equals how many millimeters?

Accepted Answer

A) 10-6 
B) 10-3 
C) 10 
D) 104 
E) 106 
A) 10-6 
B) 10-3 
C) 10 
D) 104 
E) 106

Question 15

Tire pressure in the U.S.is measured in lb/in2.
Convert 25 lb/in2 to g/cm2.454 g = 1 lb,2.54 cm = 1 in

Accepted Answer

A) 0.39 g/cm2 
B) 1.8 × 103 g/cm2 
C) 4.7 × 103 g/cm2 
D) 3.0 × 104 g/cm2 
E) 2.4 × 102 g/cm2 
A) 0.39 g/cm2 
B) 1.8 × 103 g/cm2 
C) 4.7 × 103 g/cm2 
D) 3.0 × 104 g/cm2 
E) 2.4 × 102 g/cm2

Question 16

Which one of the following is an example of an extensive property?

Accepted Answer

A) density 
B) specific gravity 
C) mass 
D) hardness 
E) boiling temperature 
A) density 
B) specific gravity 
C) mass 
D) hardness 
E) boiling temperature

Question 17

If one atom of carbon-14 weighs 14.0 atomic mass units and one atomic mass unit is equal to 1.66 × 10-24 grams,what is the mass of 25 atoms of carbon-14 in grams?

Accepted Answer

A) 5.81 × 10−22 
B) 5.81 × 10−21 
C) 581 
D) 2.11 × 1026 
E) 2.11 × 10−21 
A) 5.81 × 10−22 
B) 5.81 × 10−21 
C) 581 
D) 2.11 × 1026 
E) 2.11 × 10−21

Question 18

The number 0.0680 has 3 significant figures.

Accepted Answer

A) True 
 B)False

Question 19

A patient needs 0.300 g of a solid drug preparation per day.How many 10.0 mg tablets must be given to the patient per day?

Accepted Answer

A) 3.00 tablets 
B) 30.0 tablets 
C) 33.0 tablets 
D) 300.tablets 
E) 330.tablets 
A) 3.00 tablets 
B) 30.0 tablets 
C) 33.0 tablets 
D) 300.tablets 
E) 330.tablets

Question 20

Concentration is a measure of the number or mass of particles of a substance that are contained in a specified volume.

Accepted Answer

A) True 
 B)False

Exam 1: Chemistry - Methods and Measurement

What Celsius temperature corresponds to -4.6°F?

Mass is the force resulting from the pull of gravity upon an object.

Which measurement represents the largest volume?

Energy may be defined as the heat content of an object.

Which one of the following is an example of a pure substance?

Which process depicts a physical change?

The cost of a drug is 125 francs per gram.What is the cost in dollars per ounce? [$1 = 6.25 francs and 1 ounce = 28.4 g]

What method used by scientists is the systematic approach to the discovery of new information?

What is density?

NaCl is best classified as a/an

Which state of matter has neither a definite shape nor a definite volume?

Which diagram represents a mixture? Note: different colored circles represent atoms of different elements.

According to the Study Cycle,what is the recommended study session format?

1 centimeter equals how many millimeters?

Tire pressure in the U.S.is measured in lb/in2. Convert 25 lb/in2 to g/cm2.454 g = 1 lb,2.54 cm = 1 in

Which one of the following is an example of an extensive property?

If one atom of carbon-14 weighs 14.0 atomic mass units and one atomic mass unit is equal to 1.66 × 10-24 grams,what is the mass of 25 atoms of carbon-14 in grams?

The number 0.0680 has 3 significant figures.

A patient needs 0.300 g of a solid drug preparation per day.How many 10.0 mg tablets must be given to the patient per day?

Concentration is a measure of the number or mass of particles of a substance that are contained in a specified volume.

The Structure of the Atom and the Periodic Table

Structure and Properties of Ionic and Covalent Compounds

Calculations, chemical Changes, and the Chemical Equation

States of Matter: Gases, liquids, and Solids

Solutions

Energy,rate and Equilibrium

Acids and Bases

The Nucleus, radioactivity, and Nuclear Medicine

An Introduction to Organic Chemistry

The Unsaturated Hydrocarbons: Alkenes, alkynes, and Aromatics

Alcohols, phenols, thiols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Carboxylic Acid Derivatives

Amines and Amides

Carbohydrates

Lipids and Their Functions in Biochemical Systems

Protein Structure and Function

Enzymes

Introduction to Molecular Genetics

Carbohydrate Metabolism

Aerobic Respiration and Energy Production

Fatty Acid Metabolism

Filters

Tire pressure in the U.S.is measured in lb/in². Convert 25 lb/in² to g/cm².454 g = 1 lb,2.54 cm = 1 in

If one atom of carbon-14 weighs 14.0 atomic mass units and one atomic mass unit is equal to 1.66 × 10^-24 grams,what is the mass of 25 atoms of carbon-14 in grams?