Question 1

What is a scientific theory?

Accepted Answer

A) It is a collection of experimental data. 
B) It is an assertion of scientific fact. 
C) It is a guess or conjecture about natural phenomena. 
D) It is a fundamental relationship of nature. 
E) It is an explanation of natural phenomena that has undergone significant testing. 
A) It is a collection of experimental data. 
B) It is an assertion of scientific fact. 
C) It is a guess or conjecture about natural phenomena. 
D) It is a fundamental relationship of nature. 
E) It is an explanation of natural phenomena that has undergone significant testing.

Question 2

How many rundlets are there in 218 in3? Some conversion factors that may be useful are given below:
1)00 barrel = 42.0 gal
1)00 gal = 231 in3
1.00 gal = 3.78 L
1)00 rundlet = 6.81 × 104 mL
1)00 L = 1000.0 mL
1)00 barrel = 4.00 firkins

Accepted Answer

A) 0.524 
B) 13,000,000 
C) 24,300 
D) 907,000 
E) 0.0524 
A) 0.524 
B) 13,000,000 
C) 24,300 
D) 907,000 
E) 0.0524

Question 3

How many 100-mg aspirin tablets can be made from 10.0 kg of aspirin?

Accepted Answer

A) 10,000,000 
B) 1,000,000 
C) 1000 
D) 10,000 
E) 100,000 
A) 10,000,000 
B) 1,000,000 
C) 1000 
D) 10,000 
E) 100,000

Question 4

Which of the following discovery led mankind to observe changes in certain rocks and minerals which further led to the development of ceramics,glass,and metals?

Accepted Answer

A) ​Fire 
B) ​Rubber 
C) ​Plastic 
D) ​Neoprene 
E) ​Plasma 
A) ​Fire 
B) ​Rubber 
C) ​Plastic 
D) ​Neoprene 
E) ​Plasma

Question 5

Four samples were weighed using three different balances.(All are as accurate as the precision indicates.)The masses are 0.94 kg,58.2 g,1.55 g,and 250 mg.The total mass should be reported as

Accepted Answer

A) 1.000 kg. 
B) 1.0000 kg. 
C) 1.00 kg. 
D) 1.00000 kg. 
E) 1.0 kg. 
A) 1.000 kg. 
B) 1.0000 kg. 
C) 1.00 kg. 
D) 1.00000 kg. 
E) 1.0 kg.

Question 6

The enthalpy of combustion of benzoic acid is -26.4 kJ/g.What is the enthalpy of combustion expressed in joules per kilogram?

Accepted Answer

A) -2.64 × 103 J/kg 
B) -2.64 × 104 J/kg 
C) -2.64 × 101 J/kg 
D) -2.64 × 107 J/kg 
E) -2.64 × 1010 J/kg 
A) -2.64 × 103 J/kg 
B) -2.64 × 104 J/kg 
C) -2.64 × 101 J/kg 
D) -2.64 × 107 J/kg 
E) -2.64 × 1010 J/kg

Question 7

Which of the following is a chemical property of copper?

Accepted Answer

A) It is easily malleable. 
B) It melts at 1085°C. 
C) It conducts electricity. 
D) Its density is 8.92 g/cm3. 
E) It dissolves in certain acids. 
A) It is easily malleable. 
B) It melts at 1085°C. 
C) It conducts electricity. 
D) Its density is 8.92 g/cm3. 
E) It dissolves in certain acids.

Question 8

What is the volume of a cube that has an edge length of 0.017 m?

Accepted Answer

A) 4.9 × 10-3 m3 
B) 4.9 × 10-3 km3 
C) 4.9 × 10-3 cm3 
D) 4.9 × 10-3 mm3 
E) 4.9 cm3 
A) 4.9 × 10-3 m3 
B) 4.9 × 10-3 km3 
C) 4.9 × 10-3 cm3 
D) 4.9 × 10-3 mm3 
E) 4.9 cm3

Question 9

What is the best answer to report for

Accepted Answer

A) 2.900 g/mL 
B) 2.9003 g/mL 
C) 2.9 g/mL 
D) 2.90 g/mL 
E) 2.90025 g/mL 
A) 2.900 g/mL 
B) 2.9003 g/mL 
C) 2.9 g/mL 
D) 2.90 g/mL 
E) 2.90025 g/mL

Question 10

The boiling point of chlorine is 172 K.This temperature corresponds to

Accepted Answer

A) -82°C. 
B) 101°C. 
C) 172°C. 
D) -172°C. 
E) -101°C. 
A) -82°C. 
B) 101°C. 
C) 172°C. 
D) -172°C. 
E) -101°C.

Question 11

A barn is an atomic unit of area equal to 10-28 m2.What is the surface area of the Earth expressed in units of barn? Assume the Earth is a sphere with a radius of km.(The surface area of a sphere is 4πr2.)​

Accepted Answer

A) ​5.12 × 1042 barn 
B) ​5.12 × 10-20 barn 
C) ​5.12 × 1036 barn 
D) ​5.12 × 10-14 barn 
E) ​5.12 × 1030 barn 
A) ​5.12 × 1042 barn 
B) ​5.12 × 10-20 barn 
C) ​5.12 × 1036 barn 
D) ​5.12 × 10-14 barn 
E) ​5.12 × 1030 barn

Question 12

A(n)_____ is an observation of natural phenomena carried out in a controlled manner so that the results can be duplicated and rational conclusions made.

Accepted Answer

A) ​theory 
B) ​experiment 
C) ​hypothesis 
D) ​anomaly 
E) ​law 
A) ​theory 
B) ​experiment 
C) ​hypothesis 
D) ​anomaly 
E) ​law

Question 13

An irregularly shaped metal was weighed by the following difference:
Watch glass + metal = 56.7813 g
Watch glass = 35.4725 g
The volume of the metal was determined by placing the metal in a graduated cylinder that had water in it and measuring the volume difference.
Graduated cylinder + water + metal = 14.15 mL
Graduated cylinder + water = 11.25 mL
The density should be reported as

Accepted Answer

A) 7.348 g/mL. 
B) 7.35 g/mL. 
C) 7.4 g/mL. 
D) 7.3 g/mL. 
E) 7.3479 g/mL. 
A) 7.348 g/mL. 
B) 7.35 g/mL. 
C) 7.4 g/mL. 
D) 7.3 g/mL. 
E) 7.3479 g/mL.

Question 14

A car averages 28.5 miles per gallon of gasoline.How many liters of gasoline will be needed for a trip of 415 km? Some conversion factors that may be helpful are the following:
1 qt = 0.946 L
1 mile = 1.609 km
4 qt = 1 gal (exact)
1 ft = 12 in (exact)

Accepted Answer

A) 3 × 101 L 
B) 5 × 103 L 
C) 2 × 103 L 
D) 9 × 101 L 
E) 3 × 104 L 
A) 3 × 101 L 
B) 5 × 103 L 
C) 2 × 103 L 
D) 9 × 101 L 
E) 3 × 104 L

Question 15

The boiling of water is a

Accepted Answer

A) physical change because the water merely disappears. 
B) chemical change because heat is needed for the process to occur. 
C) physical change because the gaseous water is chemically the same as the liquid. 
D) chemical and physical change. 
E) chemical change because a gas (steam)is given off. 
A) physical change because the water merely disappears. 
B) chemical change because heat is needed for the process to occur. 
C) physical change because the gaseous water is chemically the same as the liquid. 
D) chemical and physical change. 
E) chemical change because a gas (steam)is given off.

Question 16

What is the mass of NH3 in a 80.0-cm3 sample that has a density of 0.92 g/cm3 and consists of 20% (by mass)NH3?

Accepted Answer

A) 15 g 
B) 20 g 
C) 45 g 
D) 74 g 
E) 25 g 
A) 15 g 
B) 20 g 
C) 45 g 
D) 74 g 
E) 25 g

Question 17

The figure below represents the bull's eye target for an archer.The black dots represent where the archer's arrows hit:   How can this archer be described?

Accepted Answer

A) precise but not accurate 
B) neither accurate nor precise 
C) accurate and precise 
D) accurate but not precise 
E) cannot be described from the data presented 
A) precise but not accurate 
B) neither accurate nor precise 
C) accurate and precise 
D) accurate but not precise 
E) cannot be described from the data presented

Question 18

A saline solution similar to that used for intravenous drips is made by dissolving 0.45 g sodium chloride in 50.00 g water.Which of the following statements concerning the saline solution and the law of conservation of mass is/are correct?
1)The mass of the saline solution is greater than the mass of water.
2)The mass of the saline solution is equal to the combined mass of sodium chloride and water.
3)The mass of the saline solution is greater than the mass of the sodium chloride.

Accepted Answer

A) 1 only 
B) 2 only 
C) 3 only 
D) 1 and 2 
E) 1,2,and 3 
A) 1 only 
B) 2 only 
C) 3 only 
D) 1 and 2 
E) 1,2,and 3

Question 19

All the following are characteristic properties of phosphorus.Which one is a chemical property?

Accepted Answer

A) When exposed to air,white phosphorus will burn spontaneously,but red phosphorus will not. 
B) Red phosphorus and white phosphorus are solid allotropic forms. 
C) The white form is soluble in liquid carbon disulfide but is insoluble in water. 
D) The red form of phosphorus is insoluble in both water and carbon disulfide. 
E) The red form melts at about 600°C,and the white form melts at 44°C. 
A) When exposed to air,white phosphorus will burn spontaneously,but red phosphorus will not. 
B) Red phosphorus and white phosphorus are solid allotropic forms. 
C) The white form is soluble in liquid carbon disulfide but is insoluble in water. 
D) The red form of phosphorus is insoluble in both water and carbon disulfide. 
E) The red form melts at about 600°C,and the white form melts at 44°C.

Question 20

A certain substance makes up 4.8 × 10-4 percent by mass of a normal healthy human being.How many grams of that substance would be found in the body of a person weighing 120 lb? (1.0 kg = 2.2 lb)

Accepted Answer

A) 2.6 g 
B) 0.26 g 
C) 580 g 
D) 260 g 
E) 1.3 g 
A) 2.6 g 
B) 0.26 g 
C) 580 g 
D) 260 g 
E) 1.3 g

Exam 1: Chemistry and Measurement

What is a scientific theory?

How many rundlets are there in 218 in3? Some conversion factors that may be useful are given below: 1)00 barrel = 42.0 gal 1)00 gal = 231 in3 1.00 gal = 3.78 L 1)00 rundlet = 6.81 × 104 mL 1)00 L = 1000.0 mL 1)00 barrel = 4.00 firkins

How many 100-mg aspirin tablets can be made from 10.0 kg of aspirin?

Which of the following discovery led mankind to observe changes in certain rocks and minerals which further led to the development of ceramics,glass,and metals?

Four samples were weighed using three different balances.(All are as accurate as the precision indicates.)The masses are 0.94 kg,58.2 g,1.55 g,and 250 mg.The total mass should be reported as

The enthalpy of combustion of benzoic acid is -26.4 kJ/g.What is the enthalpy of combustion expressed in joules per kilogram?

Which of the following is a chemical property of copper?

What is the volume of a cube that has an edge length of 0.017 m?

What is the best answer to report for

The boiling point of chlorine is 172 K.This temperature corresponds to

A barn is an atomic unit of area equal to 10-28 m2.What is the surface area of the Earth expressed in units of barn? Assume the Earth is a sphere with a radius of km.(The surface area of a sphere is 4πr2.)​

A(n)_____ is an observation of natural phenomena carried out in a controlled manner so that the results can be duplicated and rational conclusions made.

A car averages 28.5 miles per gallon of gasoline.How many liters of gasoline will be needed for a trip of 415 km? Some conversion factors that may be helpful are the following: 1 qt = 0.946 L 1 mile = 1.609 km 4 qt = 1 gal (exact) 1 ft = 12 in (exact)

The boiling of water is a

What is the mass of NH3 in a 80.0-cm3 sample that has a density of 0.92 g/cm3 and consists of 20% (by mass)NH3?

The figure below represents the bull's eye target for an archer.The black dots represent where the archer's arrows hit: How can this archer be described?

All the following are characteristic properties of phosphorus.Which one is a chemical property?

A certain substance makes up 4.8 × 10-4 percent by mass of a normal healthy human being.How many grams of that substance would be found in the body of a person weighing 120 lb? (1.0 kg = 2.2 lb)

Atoms, molecules, and Ions

Calculations With Chemical Formulas and Equations

Chemical Reactions

The Gaseous State

Thermochemistry

Quantum Theory of the Atom

Electron Configurations and Periodicity

Ionic and Covalent Bonding

Molecular Geometry and Chemical Bonding Theory

States of Matter; Liquids and Solids

Solutions

Rates of Reaction

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria

Solubility and Complex-Ion Equilibria

Thermodynamics and Equilibrium

Electrochemistry

Nuclear Chemistry

Chemistry of the Main-Group Metals

The Transition Elements and Coordination Compounds

Organic Chemistry

Polymer Materials: Synthetic and Biological

Filters

How many rundlets are there in 218 in³? Some conversion factors that may be useful are given below: 1)00 barrel = 42.0 gal 1)00 gal = 231 in³1.00 gal = 3.78 L 1)00 rundlet = 6.81 × 10⁴ mL 1)00 L = 1000.0 mL 1)00 barrel = 4.00 firkins

A barn is an atomic unit of area equal to 10^-28 m².What is the surface area of the Earth expressed in units of barn? Assume the Earth is a sphere with a radius of km.(The surface area of a sphere is 4πr².)

What is the mass of NH₃ in a 80.0-cm³ sample that has a density of 0.92 g/cm³ and consists of 20% (by mass)NH₃?

A certain substance makes up 4.8 × 10^-4 percent by mass of a normal healthy human being.How many grams of that substance would be found in the body of a person weighing 120 lb? (1.0 kg = 2.2 lb)