Question 1

Gold has a density of 0.01932 kg/cm3. What volume (in cm3)would be occupied by a 22.2 g sample of gold?

Accepted Answer

A) 0.429 
B) 0.870 
C) 0.000429 
D) 16.81 
E) 1.15 
A) 0.429 
B) 0.870 
C) 0.000429 
D) 16.81 
E) 1.15

Question 2

Express the temperature, 275.18 K, in degrees Celsius.

Accepted Answer

A) 548.33 °C 
B) 274.17 °C 
C) 2.03 °C 
D) 120.88 °C 
E) 22.78 °C 
A) 548.33 °C 
B) 274.17 °C 
C) 2.03 °C 
D) 120.88 °C 
E) 22.78 °C

Question 3

________ is the abbreviation for the prefix mega-.

Accepted Answer

A) k 
B) m 
C) M 
D) n 
E) d 
A) k 
B) m 
C) M 
D) n 
E) d

Question 4

Round the number 3456.5 to two significant figures.

Accepted Answer

A) 3400.0 
B) 3400 
C) 3000 
D) 3500 
E) 3000.0 
A) 3400.0 
B) 3400 
C) 3000 
D) 3500 
E) 3000.0

Question 5

Round the number 0.007222 to three significant figures.

Accepted Answer

A) 0.007 
B) 0.00722 
C) 0.0072 
D) 0.00723 
E) 0.007225 
A) 0.007 
B) 0.00722 
C) 0.0072 
D) 0.00723 
E) 0.007225

Question 6

The correct answer (reported to the proper number of significant figures)to the following is ________.
7.3 × 4.68 = ________

Accepted Answer

The answer of The correct answer (reported to the proper...

Question 7

The element hydrogen has the symbol ________.

Accepted Answer

A) H 
B) He 
C) K 
D) B 
E) Ar 
A) H 
B) He 
C) K 
D) B 
E) Ar

Question 8

Accuracy refers to ________.

Accepted Answer

A) how close a measured number is to zero 
B) how close a measured number is to the calculated value 
C) how close a measured number is to other measured numbers 
D) how close a measured number is to the true value 
E) how close a measured number is to infinity 
A) how close a measured number is to zero 
B) how close a measured number is to the calculated value 
C) how close a measured number is to other measured numbers 
D) how close a measured number is to the true value 
E) how close a measured number is to infinity

Question 9

A common English set of units for expressing velocity is miles/hour. The SI unit for velocity is ________.

Accepted Answer

A) km/hr 
B) km/s 
C) m/hr 
D) m/s 
E) cm/s 
A) km/hr 
B) km/s 
C) m/hr 
D) m/s 
E) cm/s

Question 10

The correct answer (reported to the proper number of significant figures)to the following is ________. (2.05631)(6.9391136)/ 12.59326 = ________

Accepted Answer

A) 1.1330639 
B) 1.13306 
C) 1.133064 
D) 1.1361 
E) none of the above 
A) 1.1330639 
B) 1.13306 
C) 1.133064 
D) 1.1361 
E) none of the above

Question 11

The correct result (indicating the proper number of significant figures)of the following calculation of the molecular mass for H2SO4 is ________. 4 × 15.9994 + 32.066 + 2 × 1.0079

Accepted Answer

A) 98.08 
B) 98.079 
C) 98.074 
D) 98.838 
E) 98.84 
A) 98.08 
B) 98.079 
C) 98.074 
D) 98.838 
E) 98.84

Question 12

Which of the following are chemical processes? 1. rusting of a nail
2. freezing of water
3. decomposition of water into hydrogen and oxygen gases
4. compression of oxygen gas

Accepted Answer

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

Question 13

Which of the following is (are)the lowest temperature?

Accepted Answer

A) The freezing point of water 
B) 5 °C 
C) 30 °F 
D) 280 K 
E) A and D 
A) The freezing point of water 
B) 5 °C 
C) 30 °F 
D) 280 K 
E) A and D

Question 14

Which one of the following has the element name and symbol correctly matched?

Accepted Answer

A) S, sodium 
B) Tn, tin 
C) Fe, iron 
D) N, neon 
E) B, bromine 
A) S, sodium 
B) Tn, tin 
C) Fe, iron 
D) N, neon 
E) B, bromine

Question 15

There are ________ ng in a pg.

Accepted Answer

A) 0.001 
B) 1000 
C) 0.01 
D) 100 
E) 10 
A) 0.001 
B) 1000 
C) 0.01 
D) 100 
E) 10

Question 16

A temperature of 100. °F is the same as ________ °C.

Accepted Answer

A) 38 
B) 212 
C) 700. 
D) 373 
E) -173 
A) 38 
B) 212 
C) 700. 
D) 373 
E) -173

Question 17

The number with the most significant zeros is ________.

Accepted Answer

A) 0.08 
B) 0.00090 
C) 90.300 
D) 0.008001 
E) 591 
A) 0.08 
B) 0.00090 
C) 90.300 
D) 0.008001 
E) 591

Question 18

In the following list, only ________ is not an example of a chemical reaction.

Accepted Answer

A) dissolution of a penny in nitric acid 
B) the condensation of water vapor 
C) a burning candle 
D) the formation of polyethylene from ethylene 
E) the rusting of iron 
A) dissolution of a penny in nitric acid 
B) the condensation of water vapor 
C) a burning candle 
D) the formation of polyethylene from ethylene 
E) the rusting of iron

Question 19

An iron mine produces 1.67 × 104 tons of raw ore per day. If the ore is 26.39% elemental iron, the mine produces ________ pounds of elemental iron per year. (Assume the mine operates 365 days per year.)

Accepted Answer

A) 1.221 × 1010 
B) 8.814 × 106 
C) 3.217 × 109 
D) 1.611 × 106 
E) 3.66 × 1011 
A) 1.221 × 1010 
B) 8.814 × 106 
C) 3.217 × 109 
D) 1.611 × 106 
E) 3.66 × 1011

Question 20

In the following list, only ________ is not an example of a chemical reaction.

Accepted Answer

A) burning a plastic water bottle 
B) the production of hydrogen gas from water 
C) the tarnishing of a copper penny 
D) chopping a log into sawdust 
E) charging a cellular phone 
A) burning a plastic water bottle 
B) the production of hydrogen gas from water 
C) the tarnishing of a copper penny 
D) chopping a log into sawdust 
E) charging a cellular phone

Exam 1: Introduction: Matter and Measurement

Gold has a density of 0.01932 kg/cm3. What volume (in cm3)would be occupied by a 22.2 g sample of gold?

Express the temperature, 275.18 K, in degrees Celsius.

________ is the abbreviation for the prefix mega-.

Round the number 3456.5 to two significant figures.

Round the number 0.007222 to three significant figures.

The correct answer (reported to the proper number of significant figures)to the following is ________. 7.3 × 4.68 = ________

The element hydrogen has the symbol ________.

Accuracy refers to ________.

A common English set of units for expressing velocity is miles/hour. The SI unit for velocity is ________.

The correct answer (reported to the proper number of significant figures)to the following is ________. (2.05631)(6.9391136)/ 12.59326 = ________

The correct result (indicating the proper number of significant figures)of the following calculation of the molecular mass for H2SO4 is ________. 4 × 15.9994 + 32.066 + 2 × 1.0079

Which of the following are chemical processes? 1. rusting of a nail 2. freezing of water 3. decomposition of water into hydrogen and oxygen gases 4. compression of oxygen gas

Which of the following is (are)the lowest temperature?

Which one of the following has the element name and symbol correctly matched?

There are ________ ng in a pg.

A temperature of 100. °F is the same as ________ °C.

The number with the most significant zeros is ________.

In the following list, only ________ is not an example of a chemical reaction.

An iron mine produces 1.67 × 104 tons of raw ore per day. If the ore is 26.39% elemental iron, the mine produces ________ pounds of elemental iron per year. (Assume the mine operates 365 days per year.)

In the following list, only ________ is not an example of a chemical reaction.

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

Thermochemistry

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Molecular Geometry and Bonding Theories

Gases

Liquids and Intermolecular Forces

Solids and Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Aqueous Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

Filters

Gold has a density of 0.01932 kg/cm³. What volume (in cm³)would be occupied by a 22.2 g sample of gold?

The correct answer (reported to the proper number of significant figures)to the following is . 7.3 × 4.68 =

The correct answer (reported to the proper number of significant figures)to the following is . (2.05631)(6.9391136)/ 12.59326 =

The correct result (indicating the proper number of significant figures)of the following calculation of the molecular mass for H₂SO₄ is ________. 4 × 15.9994 + 32.066 + 2 × 1.0079

An iron mine produces 1.67 × 10⁴ tons of raw ore per day. If the ore is 26.39% elemental iron, the mine produces ________ pounds of elemental iron per year. (Assume the mine operates 365 days per year.)