Question 1

Select the best statement.

Accepted Answer

A)  Physical changes may be reversed by changing the temperature. 
B)  Physical changes alter the composition of the substances involved. 
C)  Physical properties are not valid characteristics for identifying a substance. 
D)  Physical properties are mostly extensive in nature. 
E)  Physical changes are usually accompanied by chemical changes. 
A)  Physical changes may be reversed by changing the temperature. 
B)  Physical changes alter the composition of the substances involved. 
C)  Physical properties are not valid characteristics for identifying a substance. 
D)  Physical properties are mostly extensive in nature. 
E)  Physical changes are usually accompanied by chemical changes.

Question 2

If the price of gold at the morning fixing in London was $5310 per lb, what would a kilogram of gold have cost in$\le$ (pounds)? (Assume an exchange rate of $1.00 =$\le$0.545)

Accepted Answer

A)  ($\le$1310) 
B)  $\le$3510) 
C)  ($\le$6370) 
D) ($\le$10400) 
E)  ($\le$17100) 
A)  ($\le$1310) 
B)  $\le$3510) 
C)  ($\le$6370) 
D) ($\le$10400) 
E)  ($\le$17100)

Question 3

Which of the following represents the largest volume?

Accepted Answer

A)  10,000 µL 
B)  1000 pL 
C)  100 mL 
D)  10 nL 
E)  10 cm3 
A)  10,000 µL 
B)  1000 pL 
C)  100 mL 
D)  10 nL 
E)  10 cm3

Question 4

When applying the scientific method, a model or theory should be based on experimental data.

Accepted Answer

A) True 
 B)False

Question 5

The appropriate number of significant figures in the result of 15.234 - 15.208 is:

Accepted Answer

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

Question 6

The joule is the S.I. unit of energy, and is equal to 1 kg m2 s-2. The erg is another energy unit, equal to 1 g cm2 s-2. Use unit conversion methods to work out how many ergs are there in 1 joule.

Accepted Answer

A)  10-1 ergs 
B)  10 ergs 
C)  102 ergs 
D)  105 ergs 
E)  107 ergs 
A)  10-1 ergs 
B)  10 ergs 
C)  102 ergs 
D)  105 ergs 
E)  107 ergs

Question 7

Which of the following abbreviations of the given SI base unit is incorrect?

Accepted Answer

A)  second: s 
B)  kilogram: kg 
C)  meter: m 
D)  mole: mol 
E)  kelvin: k 
A)  second: s 
B)  kilogram: kg 
C)  meter: m 
D)  mole: mol 
E)  kelvin: k

Question 8

Which of the following correctly expresses 0.000007913 g in scientific notation?

Accepted Answer

A)  7.913 * 106 g 
B)  7.913 * 105 g 
C)  7.913 *10-5 g 
D)  7.913 * 10-6 g 
E)  7.913 * 10-9 g 
A)  7.913 * 106 g 
B)  7.913 * 105 g 
C)  7.913 *10-5 g 
D)  7.913 * 10-6 g 
E)  7.913 * 10-9 g

Select the best statement.

If the price of gold at the morning fixing in London was $5310 per lb, what would a kilogram of gold have cost in $\le$ (pounds)? (Assume an exchange rate of $1.00 = $\le$ 0.545)

Which of the following represents the largest volume?

When applying the scientific method, a model or theory should be based on experimental data.

The appropriate number of significant figures in the result of 15.234 - 15.208 is:

The joule is the S.I. unit of energy, and is equal to 1 kg m² s^-2. The erg is another energy unit, equal to 1 g cm² s^-2. Use unit conversion methods to work out how many ergs are there in 1 joule.

Which of the following abbreviations of the given SI base unit is incorrect?

Which of the following correctly expresses 0.000007913 g in scientific notation?

The Components of Matter

Stoichiometry of Formulas and Equations

Three Major Classes of Chemical Reactions

Gases and the Kinetic-Molecular Theory

Thermochemistry: Energy Flow and Chemical Change

Quantum Theory and Atomic Structure

Electron Configuration and Chemical Periodicity

Models of Chemical Bonding

The Shapes of Molecules

Theories of Covalent Bonding

Intermolecular Forces: Liquids, Solids, and Phase Changes

The Properties of Mixtures: Solutions and Colloids

Periodic Patterns in the Main-Group Elements

Organic Compounds and the Atomic Properties of Carbon

Kinetics: Rates and Mechanisms of Chemical Reactions

Equilibrium: the Extent of Chemical Reactions

Acid-Base Equilibria

Ionic Equilibria in Aqueous Systems

Thermodynamics: Entropy, Free Energy, and the Direction of Chemical Reactions

Electrochemistry: Chemical Change and Electrical Work

The Elements in Nature and Industry

The Transition Elements and Their Coordination Compounds

Nuclear Reactions and Their Applications

Filters

Exam 1: Keys to the Study of Chemistry

Select the best statement.

If the price of gold at the morning fixing in London was $5310 per lb, what would a kilogram of gold have cost in ≤\le≤ (pounds)? (Assume an exchange rate of $1.00 = ≤\le≤ 0.545)

Which of the following represents the largest volume?

When applying the scientific method, a model or theory should be based on experimental data.

The appropriate number of significant figures in the result of 15.234 - 15.208 is:

The joule is the S.I. unit of energy, and is equal to 1 kg m2 s-2. The erg is another energy unit, equal to 1 g cm2 s-2. Use unit conversion methods to work out how many ergs are there in 1 joule.

Which of the following abbreviations of the given SI base unit is incorrect?

Which of the following correctly expresses 0.000007913 g in scientific notation?

The Components of Matter

Stoichiometry of Formulas and Equations

Three Major Classes of Chemical Reactions

Gases and the Kinetic-Molecular Theory

Thermochemistry: Energy Flow and Chemical Change

Quantum Theory and Atomic Structure

Electron Configuration and Chemical Periodicity

Models of Chemical Bonding

The Shapes of Molecules

Theories of Covalent Bonding

Intermolecular Forces: Liquids, Solids, and Phase Changes

The Properties of Mixtures: Solutions and Colloids

Periodic Patterns in the Main-Group Elements

Organic Compounds and the Atomic Properties of Carbon

Kinetics: Rates and Mechanisms of Chemical Reactions

Equilibrium: the Extent of Chemical Reactions

Acid-Base Equilibria

Ionic Equilibria in Aqueous Systems

Thermodynamics: Entropy, Free Energy, and the Direction of Chemical Reactions

Electrochemistry: Chemical Change and Electrical Work

The Elements in Nature and Industry

The Transition Elements and Their Coordination Compounds

Nuclear Reactions and Their Applications

Filters

If the price of gold at the morning fixing in London was $5310 per lb, what would a kilogram of gold have cost in $\le$ (pounds)? (Assume an exchange rate of $1.00 = $\le$ 0.545)

The joule is the S.I. unit of energy, and is equal to 1 kg m² s^-2. The erg is another energy unit, equal to 1 g cm² s^-2. Use unit conversion methods to work out how many ergs are there in 1 joule.