Practice Questions for Portage Learning CHEM
103 General Chemistry Modules 1-6 with Correct
Answers Latest Update
Introduction:
This document contains a complete set of practice questions with
correct answers for CHEM 103 General Chemistry, covering
Modules 1 through 6. Topics include measurement and significant
figures, atoms and ions, chemical reactions and stoichiometry,
thermochemistry, periodic trends, and chemical bonding. It serves
as a structured study aid for mastering foundational concepts and
preparing for assessments in this course.
Exam Questions and Answers:
1: What is the definition of chemistry? --- correct answer ---
Chemistry is the study of matter and the changes it undergoes.
2: What are the base units of the International System of Units (SI)
for length, mass, and time? --- correct answer ---
, The base units are meter (m) for length, kilogram (kg) for mass,
and second (s) for time.
3: Convert 5 kilometers to meters.
5 kilometers is equal to 5000 meters.
4: What is the formula for density? --- correct answer ---
Density is defined as mass divided by volume (Density =
mass/volume).
5: What are significant figures and why are they important in
measurements? --- correct answer --- Significant figures are the
digits in a measurement that are known with certainty plus one
final digit that is estimated. They are important because they
convey the precision of a measurement.
6: How do you determine the number of significant figures in the
number 0.004560? --- correct answer ---
There are four significant figures in 0.004560 (4560).
7: What is the difference between accuracy and precision? ---
correct answer ---
103 General Chemistry Modules 1-6 with Correct
Answers Latest Update
Introduction:
This document contains a complete set of practice questions with
correct answers for CHEM 103 General Chemistry, covering
Modules 1 through 6. Topics include measurement and significant
figures, atoms and ions, chemical reactions and stoichiometry,
thermochemistry, periodic trends, and chemical bonding. It serves
as a structured study aid for mastering foundational concepts and
preparing for assessments in this course.
Exam Questions and Answers:
1: What is the definition of chemistry? --- correct answer ---
Chemistry is the study of matter and the changes it undergoes.
2: What are the base units of the International System of Units (SI)
for length, mass, and time? --- correct answer ---
, The base units are meter (m) for length, kilogram (kg) for mass,
and second (s) for time.
3: Convert 5 kilometers to meters.
5 kilometers is equal to 5000 meters.
4: What is the formula for density? --- correct answer ---
Density is defined as mass divided by volume (Density =
mass/volume).
5: What are significant figures and why are they important in
measurements? --- correct answer --- Significant figures are the
digits in a measurement that are known with certainty plus one
final digit that is estimated. They are important because they
convey the precision of a measurement.
6: How do you determine the number of significant figures in the
number 0.004560? --- correct answer ---
There are four significant figures in 0.004560 (4560).
7: What is the difference between accuracy and precision? ---
correct answer ---
