Question 1

The statement,"In a chemical reaction,matter is neither created nor destroyed" is called

Accepted Answer

A) The Law of Conservation of Mass. 
B) Dalton's Atomic Theory. 
C) The Scientific Method. 
D) The Law of Multiple Proportions. 
E) The Law of Definite Proportions. 
A) The Law of Conservation of Mass. 
B) Dalton's Atomic Theory. 
C) The Scientific Method. 
D) The Law of Multiple Proportions. 
E) The Law of Definite Proportions.

Question 2

A chemical change

Accepted Answer

A) occurs when methane gas is burned. 
B) occurs when paper is shredded. 
C) occurs when water is vaporized. 
D) occurs when salt is dissolved in water. 
E) occurs when Kool-Aid is stirred into water. 
A) occurs when methane gas is burned. 
B) occurs when paper is shredded. 
C) occurs when water is vaporized. 
D) occurs when salt is dissolved in water. 
E) occurs when Kool-Aid is stirred into water.

Question 3

Which of the following is an example of physical change?

Accepted Answer

A) Sugar is dissolved in water. 
B) Coffee is brewed. 
C) Dry ice sublimes. 
D) Ice (solid water)melts. 
E) All of these are examples of physical change. 
A) Sugar is dissolved in water. 
B) Coffee is brewed. 
C) Dry ice sublimes. 
D) Ice (solid water)melts. 
E) All of these are examples of physical change.

Question 4

How many liters of wine can be held in a wine barrel whose capacity is 26.0 gal?
1 gal = 4 qt = 3.7854 L.

Accepted Answer

A) 1.46 × 10-4 
B) 0.146 
C) 98.4 
D) 6.87 × 103 
E) 6.87 
A) 1.46 × 10-4 
B) 0.146 
C) 98.4 
D) 6.87 × 103 
E) 6.87

Question 5

Identify a liquid.

Accepted Answer

A) definite volume and definite shape 
B) definite volume and no definite shape 
C) definite shape and no definite volume 
D) no definite shape and no definite volume 
A) definite volume and definite shape 
B) definite volume and no definite shape 
C) definite shape and no definite volume 
D) no definite shape and no definite volume

Question 6

A student performs an experiment to determine the density of a sugar solution.She obtains the following results: 4.71 g/mL,4.73 g/mL,4.67 g/mL,4.69 g/mL.If the actual value for the density of the sugar solution is 4.40 g/mL,which statement below best describes her results?

Accepted Answer

A) Her results are precise,but not accurate. 
B) Her results are accurate,but not precise. 
C) Her results are both precise and accurate 
D) Her results are neither precise nor accurate. 
E) It isn't possible to determine with the information given. 
A) Her results are precise,but not accurate. 
B) Her results are accurate,but not precise. 
C) Her results are both precise and accurate 
D) Her results are neither precise nor accurate. 
E) It isn't possible to determine with the information given.

Question 7

Which of the following represents a hypothesis?

Accepted Answer

A) Sodium reacts with water to form sodium hydroxide and hydrogen gas. 
B) Nitrogen gas is a fairly inert substance. 
C) Nickel has a silvery sheen. 
D) When a substance combusts,it combines with air. 
E) When wood burns,heat is given off. 
A) Sodium reacts with water to form sodium hydroxide and hydrogen gas. 
B) Nitrogen gas is a fairly inert substance. 
C) Nickel has a silvery sheen. 
D) When a substance combusts,it combines with air. 
E) When wood burns,heat is given off.

Question 8

The correct answer (reported to the proper number of significant figures)to the following is ________.
11.5 × 8.78 = ________

Accepted Answer

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

Question 9

Crude oil is an example of

Accepted Answer

A) a compound. 
B) an element. 
C) a heterogeneous mixture. 
D) a homogeneous mixture. 
A) a compound. 
B) an element. 
C) a heterogeneous mixture. 
D) a homogeneous mixture.

Question 10

What is the difference between a physical property and a chemical property? Give an example of each.

Accepted Answer

A physical property is one that a substa

Question 11

The Scientific Method

Accepted Answer

A) is just a theory. 
B) is a strict set of rules and procedures that lead to inarguable fact. 
C) isn't used much in modern chemistry. 
D) is based on continued observation and experiment. 
E) is a framework for proving an argument you know to be true. 
A) is just a theory. 
B) is a strict set of rules and procedures that lead to inarguable fact. 
C) isn't used much in modern chemistry. 
D) is based on continued observation and experiment. 
E) is a framework for proving an argument you know to be true.

Question 12

If the temperature is 25°C,what is the temperature in °F?

Accepted Answer

A) 45°F 
B) 298.15°F 
C) 77°F 
D) -3.89°F 
A) 45°F 
B) 298.15°F 
C) 77°F 
D) -3.89°F

Question 13

Without using a calculator,solve the following problem:

Accepted Answer

A) 1 × 10-4 
B) 1 × 105 
C) 1 × 1023 
D) 1 × 1032 
A) 1 × 10-4 
B) 1 × 105 
C) 1 × 1023 
D) 1 × 1032

Question 14

The average distance between nitrogen and oxygen atoms is 115 pm in a compound called nitric oxide.What is this distance in millimeters?

Accepted Answer

A) 1.15 × 10-8 mm 
B) 1.15 × 10-7 mm 
C) 1.15 × 1013 mm 
D) 1.15 × 1017 mm 
A) 1.15 × 10-8 mm 
B) 1.15 × 10-7 mm 
C) 1.15 × 1013 mm 
D) 1.15 × 1017 mm

Question 15

A physical change

Accepted Answer

A) occurs when iron rusts. 
B) occurs when sugar is heated into caramel. 
C) occurs when glucose is converted into energy within your cells. 
D) occurs when water is evaporated. 
E) occurs when propane is burned for heat. 
A) occurs when iron rusts. 
B) occurs when sugar is heated into caramel. 
C) occurs when glucose is converted into energy within your cells. 
D) occurs when water is evaporated. 
E) occurs when propane is burned for heat.

Question 16

Which of the following numbers has the greatest number of significant figures?

Accepted Answer

A) 0.8010 
B) 0.504 
C) 742000 
D) 9.05 × 1024 
A) 0.8010 
B) 0.504 
C) 742000 
D) 9.05 × 1024

Question 17

What decimal power does the abbreviation pico represent?

Accepted Answer

A) 1 × 106 
B) 1 × 109  
C) 1 × 10-1 
D) 1 × 10-12 
E) 1 × 10-15 
A) 1 × 106 
B) 1 × 109  
C) 1 × 10-1 
D) 1 × 10-12 
E) 1 × 10-15

Question 18

Read the temperature with the correct number of significant figures.

Accepted Answer

A) 87°C 
B) 87.2°C 
C) 87.20°C 
D) 87.200°C 
E) 87.2000°C 
A) 87°C 
B) 87.2°C 
C) 87.20°C 
D) 87.200°C 
E) 87.2000°C

Question 19

An acetylene molecule contains 2 atoms of carbon.The number 2 represents how many significant figures?

Accepted Answer

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

Question 20

How many significant figures are in the measurement 5.34 g?

Accepted Answer

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

The statement,"In a chemical reaction,matter is neither created nor destroyed" is called

A chemical change

Which of the following is an example of physical change?

How many liters of wine can be held in a wine barrel whose capacity is 26.0 gal? 1 gal = 4 qt = 3.7854 L.

Identify a liquid.

A student performs an experiment to determine the density of a sugar solution.She obtains the following results: 4.71 g/mL,4.73 g/mL,4.67 g/mL,4.69 g/mL.If the actual value for the density of the sugar solution is 4.40 g/mL,which statement below best describes her results?

Which of the following represents a hypothesis?

The correct answer (reported to the proper number of significant figures)to the following is . 11.5 × 8.78 =

Crude oil is an example of

What is the difference between a physical property and a chemical property? Give an example of each.

The Scientific Method

If the temperature is 25°C,what is the temperature in °F?

Without using a calculator,solve the following problem:

The average distance between nitrogen and oxygen atoms is 115 pm in a compound called nitric oxide.What is this distance in millimeters?

A physical change

Which of the following numbers has the greatest number of significant figures?

What decimal power does the abbreviation pico represent?

Read the temperature with the correct number of significant figures.

An acetylene molecule contains 2 atoms of carbon.The number 2 represents how many significant figures?

How many significant figures are in the measurement 5.34 g?

Atoms and Elements

Molecules, Compounds and Chemical Equations

Chemical Quantities and Aqueous Reactions

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding II: Molecular Shapes, Valence Bond Theory, and

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Filters

Exam 1: Matter, Measurement, and Problem Solving

The statement,"In a chemical reaction,matter is neither created nor destroyed" is called

A chemical change

Which of the following is an example of physical change?

How many liters of wine can be held in a wine barrel whose capacity is 26.0 gal? 1 gal = 4 qt = 3.7854 L.

Identify a liquid.

A student performs an experiment to determine the density of a sugar solution.She obtains the following results: 4.71 g/mL,4.73 g/mL,4.67 g/mL,4.69 g/mL.If the actual value for the density of the sugar solution is 4.40 g/mL,which statement below best describes her results?

Which of the following represents a hypothesis?

The correct answer (reported to the proper number of significant figures)to the following is ________. 11.5 × 8.78 = ________

Crude oil is an example of

What is the difference between a physical property and a chemical property? Give an example of each.

The Scientific Method

If the temperature is 25°C,what is the temperature in °F?

Without using a calculator,solve the following problem:

The average distance between nitrogen and oxygen atoms is 115 pm in a compound called nitric oxide.What is this distance in millimeters?

A physical change

Which of the following numbers has the greatest number of significant figures?

What decimal power does the abbreviation pico represent?

Read the temperature with the correct number of significant figures.

An acetylene molecule contains 2 atoms of carbon.The number 2 represents how many significant figures?

How many significant figures are in the measurement 5.34 g?

Atoms and Elements

Molecules, Compounds and Chemical Equations

Chemical Quantities and Aqueous Reactions

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding II: Molecular Shapes, Valence Bond Theory, and

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Filters

The correct answer (reported to the proper number of significant figures)to the following is . 11.5 × 8.78 =