Question 1

When 4.870 × 10-3 is correctly converted to its standard form the number becomes ________.

Accepted Answer

A) 4870 
B) 4870. 
C) 0.00487 
D) 0.004870 
E) 0.0004870 
A) 4870 
B) 4870. 
C) 0.00487 
D) 0.004870 
E) 0.0004870

Question 2

An inexact number results from a measurement or observation and contains some uncertainty.

Accepted Answer

A) True 
 B)False

Question 3

Which is an example of a physical change?

Accepted Answer

A) The rusting of an iron nail 
B) The burning of propane in a gas grill 
C) Baking cookies 
D) Polishing tarnished silver 
E) Melting of an ice cube in a glass of soda 
A) The rusting of an iron nail 
B) The burning of propane in a gas grill 
C) Baking cookies 
D) Polishing tarnished silver 
E) Melting of an ice cube in a glass of soda

Question 4

Assuming the numbers are measured values,when multiplying 762.85 by 15 the answer should be reported with two significant figures.

Accepted Answer

A) True 
 B)False

Question 5

If a piece of rock has a volume of 0.73 L and a mass of 1524 g,what is the density of the rock in g/mL?

Accepted Answer

A) 2.1 × 103 g/mL 
B) 0.48 g/mL 
C) 4.8 × 10-4 g/mL 
D) 2.1 g/mL 
E) 2.088 g/mL 
A) 2.1 × 103 g/mL 
B) 0.48 g/mL 
C) 4.8 × 10-4 g/mL 
D) 2.1 g/mL 
E) 2.088 g/mL

Question 6

Elements and compounds are both classified as pure substances.

Accepted Answer

A) True 
 B)False

Question 7

The recommended dietary allowance for calcium for teenage children is 1,300 mg per day. If a typical 8.0-fl oz glass of reduced-fat milk contains 298 mg of calcium,how many fluid ounces of milk does a teenager need to drink to get the entire recommended amount of calcium from this milk?

Accepted Answer

A) 4.4 fl oz 
B) 1.8 fl oz 
C) 3.5 fl oz 
D) 35 fl oz 
E) 32 fl oz 
A) 4.4 fl oz 
B) 1.8 fl oz 
C) 3.5 fl oz 
D) 35 fl oz 
E) 32 fl oz

Question 8

Air has a density of 0.001226 g/mL. What volume of air would have a mass of 1.0 lb?

Accepted Answer

A) 2.7 mL 
B) 815.6 mL 
C) 37 mL 
D) 3.7 × 102 L 
A) 2.7 mL 
B) 815.6 mL 
C) 37 mL 
D) 3.7 × 102 L

Question 9

The number 87,927,000 is larger than the number 9.7 × 106.

Accepted Answer

A) True 
 B)False

Question 10

Which metric relationship is INCORRECT?

Accepted Answer

A) 1 milligram = 1,000 grams 
B) 1 dL = 100 mL 
C) 1 km = 1,000 m 
D) 100 cg = 1 g 
E) 1 liter = 1,000,000 microliters 
A) 1 milligram = 1,000 grams 
B) 1 dL = 100 mL 
C) 1 km = 1,000 m 
D) 100 cg = 1 g 
E) 1 liter = 1,000,000 microliters

Question 11

Which of the following temperatures is the hottest?

Accepted Answer

A) 100 °C 
B) 100 °F 
C) 100 K 
D) All would feel equally warm. 
A) 100 °C 
B) 100 °F 
C) 100 K 
D) All would feel equally warm.

Question 12

What is the correct metric relationship between milliliters and microliters?

Accepted Answer

A) 1 milliliter = 1 microliter 
B) 1,000 milliliters = 1 microliter 
C) 1 milliliter = 1,000 microliters 
D) 1,000,000 milliliters = 1 microliter 
E) 1 milliliter = 1,000,000 microliters 
A) 1 milliliter = 1 microliter 
B) 1,000 milliliters = 1 microliter 
C) 1 milliliter = 1,000 microliters 
D) 1,000,000 milliliters = 1 microliter 
E) 1 milliliter = 1,000,000 microliters

Question 13

The estimated average daily requirement of folic acid for pregnant females is 520 micrograms. Which accurately expresses this value?

Accepted Answer

A) 520 mg 
B) 520 Mg 
C) 520 mG 
D) 520 μg 
A) 520 mg 
B) 520 Mg 
C) 520 mG 
D) 520 μg

Question 14

The terms used in conversion factors must always be exact numbers.

Accepted Answer

A) True 
 B)False

Question 15

On an autumn day in Washington,DC,the outdoor temperature was 21 °C. What was this outdoor temperature in °F?

Accepted Answer

A) 44 °F 
B) 57 °F 
C) 69 °F 
D) 70 °F 
A) 44 °F 
B) 57 °F 
C) 69 °F 
D) 70 °F

Question 16

Which measurement has the fewest number of significant figures?

Accepted Answer

A) 12.80 m 
B) 0.1280 m 
C) 0.001280 m 
D) 1280 m 
E) All of the measurements have the same number of significant figures. 
A) 12.80 m 
B) 0.1280 m 
C) 0.001280 m 
D) 1280 m 
E) All of the measurements have the same number of significant figures.

Question 17

If the density of a substance is greater than 1 g/mL,the mass of a sample of this substance will be greater than the volume of the sample.

Accepted Answer

A) True 
 B)False

Question 18

When 5.5490 × 108 is correctly rounded to three significant figures the number becomes ________.

Accepted Answer

A) 5.55 
B) 5.55 × 108 
C) 555 
D) 554 
E) 5.54 × 108 
A) 5.55 
B) 5.55 × 108 
C) 555 
D) 554 
E) 5.54 × 108

Question 19

For a number written in scientific notation,a negative exponent indicates the value of the number is less than 1.

Accepted Answer

A) True 
 B)False

Question 20

In scientific notation,a number is written as y × 10x,where x can be any positive or negative number or fraction.

Accepted Answer

A) True 
 B)False

Exam 1: Matter and Measurement

When 4.870 × 10-3 is correctly converted to its standard form the number becomes ________.

An inexact number results from a measurement or observation and contains some uncertainty.

Which is an example of a physical change?

Assuming the numbers are measured values,when multiplying 762.85 by 15 the answer should be reported with two significant figures.

If a piece of rock has a volume of 0.73 L and a mass of 1524 g,what is the density of the rock in g/mL?

Elements and compounds are both classified as pure substances.

The recommended dietary allowance for calcium for teenage children is 1,300 mg per day. If a typical 8.0-fl oz glass of reduced-fat milk contains 298 mg of calcium,how many fluid ounces of milk does a teenager need to drink to get the entire recommended amount of calcium from this milk?

Air has a density of 0.001226 g/mL. What volume of air would have a mass of 1.0 lb?

The number 87,927,000 is larger than the number 9.7 × 106.

Which metric relationship is INCORRECT?

Which of the following temperatures is the hottest?

What is the correct metric relationship between milliliters and microliters?

The estimated average daily requirement of folic acid for pregnant females is 520 micrograms. Which accurately expresses this value?

The terms used in conversion factors must always be exact numbers.

On an autumn day in Washington,DC,the outdoor temperature was 21 °C. What was this outdoor temperature in °F?

Which measurement has the fewest number of significant figures?

If the density of a substance is greater than 1 g/mL,the mass of a sample of this substance will be greater than the volume of the sample.

When 5.5490 × 108 is correctly rounded to three significant figures the number becomes ________.

For a number written in scientific notation,a negative exponent indicates the value of the number is less than 1.

In scientific notation,a number is written as y × 10x,where x can be any positive or negative number or fraction.

Atoms and the Periodic Table

Ionic Compounds

Covalent Compounds

Chemical Reactions

Energy Changes,reaction Rates,and Equilibrium

Gases,liquids,and Solids

Solutions

Acids and Bases

Nuclear Chemistry

Introduction to Organic Molecules and Functional Groups

Alkanes

Unsaturated Hydrocarbons

Organic Compounds That Contain Oxygen,halogen,or Sulfur

The Three-Dimensional Shape of Molecules

Aldehydes and Ketones

Carboxylic Acids,esters,and Amides

Amines and Neurotransmitters

Lipids

Carbohydrates

Amino Acids,proteins,and Enzymes

Nucleic Acids and Protein Synthesis

Metabolism and Energy Production

Carbohydrate,lipid,and Protein Metabolism

Filters

When 4.870 × 10^-3 is correctly converted to its standard form the number becomes ________.

The number 87,927,000 is larger than the number 9.7 × 10⁶.

When 5.5490 × 10⁸ is correctly rounded to three significant figures the number becomes ________.

In scientific notation,a number is written as y × 10^x,where x can be any positive or negative number or fraction.