Question 1

Round off 507,506 to four significant figures.

Accepted Answer

A) 5075 
B) 5076 
C) 5)075 × 105 
D) 5)076 × 105 
A) 5075 
B) 5076 
C) 5)075 × 105 
D) 5)076 × 105

Question 2

The winner of the men's 1500-meter speed skating event at a recent Winter Olympics had a time of 1:45.57.Assuming that the distance was measured accurately to five significant figures,what was the skater's average speed in miles per hour?

Accepted Answer

A) 31.785 mi/hr 
B) 38.418 mi/hr 
C) 51.151 mi/hr 
D) 61.826 mi/hr 
A) 31.785 mi/hr 
B) 38.418 mi/hr 
C) 51.151 mi/hr 
D) 61.826 mi/hr

Question 3

Iodine belongs to the ________ group of the periodic table.

Accepted Answer

A) alkali metal 
B) alkaline earth metal 
C) halogen 
D) noble gas 
A) alkali metal 
B) alkaline earth metal 
C) halogen 
D) noble gas

Question 4

The quantity 3.00 cm3 is the same as ________ mL.

Accepted Answer

Question 5

All of the following elements are nonmetals except

Accepted Answer

A) antimony. 
B) carbon. 
C) hydrogen. 
D) oxygen. 
A) antimony. 
B) carbon. 
C) hydrogen. 
D) oxygen.

Question 6

Which of the following elements is classified as a semimetal?

Accepted Answer

A) calcium 
B) boron 
C) fluorine 
D) uranium 
A) calcium 
B) boron 
C) fluorine 
D) uranium

Question 7

Which element indicated by letter in the following periodic table reacts rapidly with water to form an alkaline solution?

Accepted Answer

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

Question 8

Which one of the following statements about temperature scales is false?

Accepted Answer

A) The boiling point of water on the Fahrenheit scale is 212 degrees. 
B) The Celsius degree is smaller than the Fahrenheit degree. 
C) The freezing point of water on the Celsius scale is 0 degrees. 
D) All temperatures on the Kelvin scale are positive numbers. 
A) The boiling point of water on the Fahrenheit scale is 212 degrees. 
B) The Celsius degree is smaller than the Fahrenheit degree. 
C) The freezing point of water on the Celsius scale is 0 degrees. 
D) All temperatures on the Kelvin scale are positive numbers.

Question 9

Which element indicated by letter in the following periodic table is a gas at room temperature and a pressure of 1.0 atm?

Accepted Answer

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

Question 10

Which of the following is the greatest mass?

Accepted Answer

A) 1000 μg 
B) 1)000 × 10-4 kg 
C) 1)000 × 10-4 cg 
D) 1)000 × 10-8 Mg 
A) 1000 μg 
B) 1)000 × 10-4 kg 
C) 1)000 × 10-4 cg 
D) 1)000 × 10-8 Mg

Question 11

________ refers to how well a number of independent measurements agree with one another,whereas ________ refers to how close to the true value a given measurement is.

Accepted Answer

The answer of ________ refers to how well a number...

Question 12

The mass of a proton is 1.67 × 10-27 kg.What is the mass of a proton in Gigagrams?

Accepted Answer

A) 1)67 × 10-39 Gg 
B) 1)67 × 10-36 Gg 
C) 1)67 × 10-33 Gg 
D) 1)67 × 10-30 Gg 
A) 1)67 × 10-39 Gg 
B) 1)67 × 10-36 Gg 
C) 1)67 × 10-33 Gg 
D) 1)67 × 10-30 Gg

Question 13

Convert 0.003002 to standard scientific notation.

Accepted Answer

A) 3)002 × 10-3 
B) 3002 × 10-6 
C) 3)002 × 103 
D) 3002 × 106 
A) 3)002 × 10-3 
B) 3002 × 10-6 
C) 3)002 × 103 
D) 3002 × 106

Question 14

Which element indicated by letter in the following periodic table reacts rapidly with water to form an alkaline solution?

Accepted Answer

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

Question 15

Which of the following is a fundamental SI Unit?

Accepted Answer

A) centimeter 
B) kilogram 
C) microsecond 
D) milliliter 
A) centimeter 
B) kilogram 
C) microsecond 
D) milliliter

Question 16

A propane molecule contains 3 atoms of carbon.The number 3 represents how many significant figures?

Accepted Answer

A) one 
B) two 
C) three 
D) infinite 
A) one 
B) two 
C) three 
D) infinite

Question 17

A fishing boat accidentally spills 3.0 barrels of diesel oil into the ocean.Each barrel contains 42 gallons.If the oil film on the ocean is 2.5 × 102 nm thick,how many square meters will the oil slick cover?

Accepted Answer

A) 1)9 × 10-3 m2 
B) 1)9 × 106 m2 
C) 1)9 × 107 m2 
D) none of these 
A) 1)9 × 10-3 m2 
B) 1)9 × 106 m2 
C) 1)9 × 107 m2 
D) none of these

Question 18

The density of mercury is 13.6 g/cm3.The mass of 38.0 cm3 of mercury is ________ g.

Accepted Answer

Question 19

Which of the following elements is classified as a semimetal?

Accepted Answer

A) calcium 
B) germanium 
C) fluorine 
D) uranium 
A) calcium 
B) germanium 
C) fluorine 
D) uranium

Question 20

To the correct number of significant figures,an automobile traveling at 28 mi/h is traveling at ________ km/h (1 km = 0.6214 mi).

Accepted Answer

A) 17 
B) 17.40 
C) 45 
D) 45.06 
A) 17 
B) 17.40 
C) 45 
D) 45.06

Exam 1: Chemistry: Matter and Measurement

Round off 507,506 to four significant figures.

The winner of the men's 1500-meter speed skating event at a recent Winter Olympics had a time of 1:45.57.Assuming that the distance was measured accurately to five significant figures,what was the skater's average speed in miles per hour?

Iodine belongs to the ________ group of the periodic table.

The quantity 3.00 cm3 is the same as ________ mL.

All of the following elements are nonmetals except

Which of the following elements is classified as a semimetal?

Which element indicated by letter in the following periodic table reacts rapidly with water to form an alkaline solution?

Which one of the following statements about temperature scales is false?

Which element indicated by letter in the following periodic table is a gas at room temperature and a pressure of 1.0 atm?

Which of the following is the greatest mass?

________ refers to how well a number of independent measurements agree with one another,whereas ________ refers to how close to the true value a given measurement is.

The mass of a proton is 1.67 × 10-27 kg.What is the mass of a proton in Gigagrams?

Convert 0.003002 to standard scientific notation.

Which element indicated by letter in the following periodic table reacts rapidly with water to form an alkaline solution?

Which of the following is a fundamental SI Unit?

A propane molecule contains 3 atoms of carbon.The number 3 represents how many significant figures?

A fishing boat accidentally spills 3.0 barrels of diesel oil into the ocean.Each barrel contains 42 gallons.If the oil film on the ocean is 2.5 × 102 nm thick,how many square meters will the oil slick cover?

The density of mercury is 13.6 g/cm3.The mass of 38.0 cm3 of mercury is ________ g.

Which of the following elements is classified as a semimetal?

To the correct number of significant figures,an automobile traveling at 28 mi/h is traveling at ________ km/h (1 km = 0.6214 mi).

Atoms, molecules, and Ions

Formulas, equations, and Moles

Reactions in Aqueous Solutions

Periodicity and the Atomic Structure of Atoms

Ionic Bonds and Some Main-Group Chemistry

Covalent Bonds and Molecular Structure

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Liquids,solids,and Phase Changes

Solutions and Their Properties

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

Electrochemistry

Hydrogen, oxygen, and Water

The Main-Group Elements

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

Nuclear Chemistry

Organic and Biological Chemistry

Filters

The quantity 3.00 cm³ is the same as ________ mL.

refers to how well a number of independent measurements agree with one another,whereas refers to how close to the true value a given measurement is.

The mass of a proton is 1.67 × 10^-27 kg.What is the mass of a proton in Gigagrams?

A fishing boat accidentally spills 3.0 barrels of diesel oil into the ocean.Each barrel contains 42 gallons.If the oil film on the ocean is 2.5 × 10² nm thick,how many square meters will the oil slick cover?

The density of mercury is 13.6 g/cm³.The mass of 38.0 cm³ of mercury is ________ g.