P R O F E S S I O N A L P R A C T I C E M AT E R I A L S
CHEM 103 Portage Learning
Modules 1, 2, 3, 4, 6, 7 & 8 Exam
Bundle | Updated Questions and
Answers (2026-2027)
490+
Verified Answers Exam Ready With Rationales
494 QUESTIONS
DOCUMENT OVERVIEW
This 2026/27 examination package spans 7 modules — Module 1 Exam , Module 2
Exam , Module 3 Exam , Module 4 Exam , Module 6 Exam , Module 7 Exam , and
Module 8 Exam — totaling 494 verified questions . Coverage is weighted toward
Module 1 Exam (169 questions), with Module 7 Exam as the smallest section (26
questions). Every item ships with detailed rationales explaining the underlying principle,
and verified correct answers. Best used as a structured review across these sections, or
as targeted remediation on any single module. See the Table of Contents below for the
full module breakdown and question ranges.
CONTENTS
01 Module 1 Exam Q1–Q169
Page 1
,02 Module 2 Exam Q170–Q237
03 Module 3 Exam Q238–Q294
04 Module 4 Exam Q295–Q328
05 Module 6 Exam Q329–Q372
06 Module 7 Exam Q373–Q398
07 Module 8 Exam Q399–Q494
MODULE 1 OF 7
Module 1 Exam
169 Questions Q1–Q169
Page 2
, Q1 QUESTION 1 OF 494 Module 1 Exam
1 EXPONENTIAL NUMBERS
CORRECT ANSWER
The speed of light is 186,000 miles per second. This is 1.86 x 105 (in exponential
form)
The diameter of an E. coli cell is 0.00000080 meters = 8.0 x 10-7 (in exponential
form)
4950000000. A number larger than one will have a positive exponent. Move the
decimal point nine places to the left to give 4.95 x 109
0.00000000000056 A number smaller than one will have a negative exponent.
Move the decimal point 13 places to the right to give 5.6 x 10-13
1.) 0.00000456 = smaller than 1 = negative exponent, move decimal 6 places = 4.56 x
10-6
2.) 2.63 x 107 = positive exponent = larger than 1, move decimal 7 places = 26300000.
3.) 7800000. = larger than 1 = positive exponent, move decimal 6 places = 7.8 x 106
4.) 8.26 x 10-5 = negative exponent = smaller than 1, move decimal 5 places =
0.0000826
5.) 5.38 x 10-3 = negative exponent = smaller than 1, move decimal 3 places = 0.00538
6.) 0.000673 = smaller than 1 = negative exponent, move decimal 4 places = 6.73 x 10-
4
7.) 3.82 x 104 = positive exponent = larger than 1, move decimal 4 places = 38200.
8.) 623000000. = larger than 1 = positive exponent, move decimal 8 places = 6.23 X
108
RATIONALE
Exponential notation effectively communicates large or small quantities by representing
them as a product of a coefficient and a power of ten, where a positive exponent indicates a
number greater than one and a negative exponent denotes a number less than one. This
understanding is crucial for accurately converting standard form to scientific notation and
vice versa, reinforcing the concept of magnitude in numerical representation.
Page 3
, Q2 QUESTION 2 OF 494 Module 1 Exam
2: METRIC SYSTEM - UNIT CONVERSIONS
CORRECT ANSWER
1 foot (ft)=12 inches (in)
1 kilogram (kg)=1000 grams (g)
1 pound (lb)=16 ounces (oz)
1 gallon (gal)=4 quarts (qt)
1000 milliliters (ml)=1 liter (L)
100 centigrams (cg)=1 gram (g)
10 decimeters (dm)=1 meter (m)
RATIONALE
Understanding metric and imperial unit conversions is fundamental for precise measurement
in scientific and everyday contexts, ensuring accuracy in calculations and communication.
Mastery of these conversions, such as knowing that 1 kilogram equals 1000 grams, facilitates
effective data interpretation and application across various disciplines.
Q3 QUESTION 3 OF 494 Module 1 Exam
The prefixes kilo (= 1000), milli (= 1/1000), centi (= 1/100), and deci (= 1/10)
CORRECT ANSWER
are used with any metric unit, such as grams (weight), liters (volume), and meters
(distance).
RATIONALE
Metric prefixes like kilo, milli, centi, and deci denote specific powers of ten, allowing for
standardized communication of measurements across various units such as grams, liters, and
meters. This system enhances precision and clarity in scientific and mathematical contexts.
Page 4
CHEM 103 Portage Learning
Modules 1, 2, 3, 4, 6, 7 & 8 Exam
Bundle | Updated Questions and
Answers (2026-2027)
490+
Verified Answers Exam Ready With Rationales
494 QUESTIONS
DOCUMENT OVERVIEW
This 2026/27 examination package spans 7 modules — Module 1 Exam , Module 2
Exam , Module 3 Exam , Module 4 Exam , Module 6 Exam , Module 7 Exam , and
Module 8 Exam — totaling 494 verified questions . Coverage is weighted toward
Module 1 Exam (169 questions), with Module 7 Exam as the smallest section (26
questions). Every item ships with detailed rationales explaining the underlying principle,
and verified correct answers. Best used as a structured review across these sections, or
as targeted remediation on any single module. See the Table of Contents below for the
full module breakdown and question ranges.
CONTENTS
01 Module 1 Exam Q1–Q169
Page 1
,02 Module 2 Exam Q170–Q237
03 Module 3 Exam Q238–Q294
04 Module 4 Exam Q295–Q328
05 Module 6 Exam Q329–Q372
06 Module 7 Exam Q373–Q398
07 Module 8 Exam Q399–Q494
MODULE 1 OF 7
Module 1 Exam
169 Questions Q1–Q169
Page 2
, Q1 QUESTION 1 OF 494 Module 1 Exam
1 EXPONENTIAL NUMBERS
CORRECT ANSWER
The speed of light is 186,000 miles per second. This is 1.86 x 105 (in exponential
form)
The diameter of an E. coli cell is 0.00000080 meters = 8.0 x 10-7 (in exponential
form)
4950000000. A number larger than one will have a positive exponent. Move the
decimal point nine places to the left to give 4.95 x 109
0.00000000000056 A number smaller than one will have a negative exponent.
Move the decimal point 13 places to the right to give 5.6 x 10-13
1.) 0.00000456 = smaller than 1 = negative exponent, move decimal 6 places = 4.56 x
10-6
2.) 2.63 x 107 = positive exponent = larger than 1, move decimal 7 places = 26300000.
3.) 7800000. = larger than 1 = positive exponent, move decimal 6 places = 7.8 x 106
4.) 8.26 x 10-5 = negative exponent = smaller than 1, move decimal 5 places =
0.0000826
5.) 5.38 x 10-3 = negative exponent = smaller than 1, move decimal 3 places = 0.00538
6.) 0.000673 = smaller than 1 = negative exponent, move decimal 4 places = 6.73 x 10-
4
7.) 3.82 x 104 = positive exponent = larger than 1, move decimal 4 places = 38200.
8.) 623000000. = larger than 1 = positive exponent, move decimal 8 places = 6.23 X
108
RATIONALE
Exponential notation effectively communicates large or small quantities by representing
them as a product of a coefficient and a power of ten, where a positive exponent indicates a
number greater than one and a negative exponent denotes a number less than one. This
understanding is crucial for accurately converting standard form to scientific notation and
vice versa, reinforcing the concept of magnitude in numerical representation.
Page 3
, Q2 QUESTION 2 OF 494 Module 1 Exam
2: METRIC SYSTEM - UNIT CONVERSIONS
CORRECT ANSWER
1 foot (ft)=12 inches (in)
1 kilogram (kg)=1000 grams (g)
1 pound (lb)=16 ounces (oz)
1 gallon (gal)=4 quarts (qt)
1000 milliliters (ml)=1 liter (L)
100 centigrams (cg)=1 gram (g)
10 decimeters (dm)=1 meter (m)
RATIONALE
Understanding metric and imperial unit conversions is fundamental for precise measurement
in scientific and everyday contexts, ensuring accuracy in calculations and communication.
Mastery of these conversions, such as knowing that 1 kilogram equals 1000 grams, facilitates
effective data interpretation and application across various disciplines.
Q3 QUESTION 3 OF 494 Module 1 Exam
The prefixes kilo (= 1000), milli (= 1/1000), centi (= 1/100), and deci (= 1/10)
CORRECT ANSWER
are used with any metric unit, such as grams (weight), liters (volume), and meters
(distance).
RATIONALE
Metric prefixes like kilo, milli, centi, and deci denote specific powers of ten, allowing for
standardized communication of measurements across various units such as grams, liters, and
meters. This system enhances precision and clarity in scientific and mathematical contexts.
Page 4
