Question 1

What does it mean to be an exact number? Give an example of an exact number.

Accepted Answer

An exact number has an infinite number o

Question 2

A substance that can't be chemically broken down into simpler substances is

Accepted Answer

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

Question 3

A person is 64.00 inches tall.How tall is she in cm?

Accepted Answer

A) 162.6 cm 
B) 25.20 cm 
C) 25.60 cm 
D) 192.0 cm 
E) 128.0 cm 
A) 162.6 cm 
B) 25.20 cm 
C) 25.60 cm 
D) 192.0 cm 
E) 128.0 cm

Question 4

How many cm3 are contained in 3.77 × 104 mm3?

Accepted Answer

A) 3.77 × 104 cm3 
B) 3.77 × 101 cm3 
C) 3.77 × 10-10 cm3 
D) 3.77 × 1020 cm3 
E) 3.77 × 106 cm3 
A) 3.77 × 104 cm3 
B) 3.77 × 101 cm3 
C) 3.77 × 10-10 cm3 
D) 3.77 × 1020 cm3 
E) 3.77 × 106 cm3

Question 5

How many of the following numbers contain three significant figures?
0.408$\quad$9.040$\quad$0.0400 $\quad$9.05 × 1024

Accepted Answer

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

Question 6

Describe the difference between an intensive and extensive property using examples.

Accepted Answer

An intensive property does not depend on

Question 7

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 metres 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 the above 
A) 1.9 × 10-3 m2 
B) 1.9 × 106 m2 
C) 1.9 × 107 m2 
D) none of the above

Question 8

Decanting is

Accepted Answer

A) a process in which the more volatile liquid is boiled off. 
B) dissolving a solid into a liquid. 
C) separating a solid from a liquid by pouring off the liquid. 
D) pouring a mixture through a filter paper to separate the solid from the liquid. 
E) heating a mixture of two solids to fuse them together. 
A) a process in which the more volatile liquid is boiled off. 
B) dissolving a solid into a liquid. 
C) separating a solid from a liquid by pouring off the liquid. 
D) pouring a mixture through a filter paper to separate the solid from the liquid. 
E) heating a mixture of two solids to fuse them together.

Question 9

Kilogram is a measure of

Accepted Answer

A) mass. 
B) time. 
C) temperature. 
D) length. 
E) volume. 
A) mass. 
B) time. 
C) temperature. 
D) length. 
E) volume.

Question 10

The estimated costs for remodelling the interior of an apartment are three 1-gallon cans of paint at $15.84 each,two paint brushes at $4.68 each,and $152 for a helper.The total estimated cost with the appropriate significant figures is $________.

Accepted Answer

A) 208.88 
B) 2.1 × 102 
C) 209 
D) 208.9 
A) 208.88 
B) 2.1 × 102 
C) 209 
D) 208.9

Question 11

How many kL does a 1.25 × 108 cL sample contain?

Accepted Answer

A) 1.25 × 103 kL 
B) 1.25 × 1013 kL 
C) 1.25 × 104 kL 
D) 1.25 × 1012 kL 
E) 1.25 × 102 kL 
A) 1.25 × 103 kL 
B) 1.25 × 1013 kL 
C) 1.25 × 104 kL 
D) 1.25 × 1012 kL 
E) 1.25 × 102 kL

Question 12

The mass of a single zinc atom is 1.086 × 10-22 g.This is the same mass as

Accepted Answer

A) 1.086 × 10-16 mg. 
B) 1.086 × 10-25 kg. 
C) 1.086 × 10-28 μg. 
D) 1.086 × 10-31 ng. 
A) 1.086 × 10-16 mg. 
B) 1.086 × 10-25 kg. 
C) 1.086 × 10-28 μg. 
D) 1.086 × 10-31 ng.

Question 13

What decimal power does the abbreviation pico represent?

Accepted Answer

A) 1 × 1010 
B) 1 × 103 
C) 1 × 10-4 
D) 1 × 10-12 
E) 1 × 10-10 
A) 1 × 1010 
B) 1 × 103 
C) 1 × 10-4 
D) 1 × 10-12 
E) 1 × 10-10

What does it mean to be an exact number? Give an example of an exact number.

A substance that can't be chemically broken down into simpler substances is

A person is 64.00 inches tall.How tall is she in cm?

How many cm³ are contained in 3.77 × 10⁴ mm³?

How many of the following numbers contain three significant figures? 0.408 $\quad$ 9.040 $\quad$ 0.0400 $\quad$ 9.05 × 10²⁴

Describe the difference between an intensive and extensive property using examples.

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 metres will the oil slick cover?

Decanting is

Kilogram is a measure of

The estimated costs for remodelling the interior of an apartment are three 1-gallon cans of paint at $15.84 each,two paint brushes at $4.68 each,and $152 for a helper.The total estimated cost with the appropriate significant figures is $________.

How many kL does a 1.25 × 10⁸ cL sample contain?

The mass of a single zinc atom is 1.086 × 10^-22 g.This is the same mass as

What decimal power does the abbreviation pico represent?

Atoms and Elements

Molecules,compounds,and Nomenclature

Chemical Reactions and Stoichiometry

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 Molecular Orbital Theory

Liquids, solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry I: Structures

Organic Chemistry II: Reactions

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

Exam 1: Units of Measurement for Physical and Chemical Change

What does it mean to be an exact number? Give an example of an exact number.

A substance that can't be chemically broken down into simpler substances is

A person is 64.00 inches tall.How tall is she in cm?

How many cm3 are contained in 3.77 × 104 mm3?

How many of the following numbers contain three significant figures? 0.408 \quad 9.040 \quad 0.0400 \quad 9.05 × 1024

Describe the difference between an intensive and extensive property using examples.

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 metres will the oil slick cover?

Decanting is

Kilogram is a measure of

The estimated costs for remodelling the interior of an apartment are three 1-gallon cans of paint at $15.84 each,two paint brushes at $4.68 each,and $152 for a helper.The total estimated cost with the appropriate significant figures is $________.

How many kL does a 1.25 × 108 cL sample contain?

The mass of a single zinc atom is 1.086 × 10-22 g.This is the same mass as

What decimal power does the abbreviation pico represent?

Atoms and Elements

Molecules,compounds,and Nomenclature

Chemical Reactions and Stoichiometry

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 Molecular Orbital Theory

Liquids, solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry I: Structures

Organic Chemistry II: Reactions

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

How many cm³ are contained in 3.77 × 10⁴ mm³?

How many of the following numbers contain three significant figures? 0.408 $\quad$ 9.040 $\quad$ 0.0400 $\quad$ 9.05 × 10²⁴

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 metres will the oil slick cover?

How many kL does a 1.25 × 10⁸ cL sample contain?

The mass of a single zinc atom is 1.086 × 10^-22 g.This is the same mass as