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Practice Questions for Portage Learning CHEM 103 General Chemistry Modules 1-6
Use the 64 quiz questions to prepare yourself and test whether you know the subject matter.
Preview (8 of the 64 quiz questions)
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DownloadWhat is the definition of chemistry?
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Chemistry is the study of matter and the changes it undergoes.
What are the base units of the International System of Units (SI) for length, mass, and time?
Flip card
The base units are meter (m) for length, kilogram (kg) for mass, and second (s) for time.
Convert 5 kilometers to meters.
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5 kilometers is equal to 5000 meters.
What is the formula for density?
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Density is defined as mass divided by volume (Density = mass/volume).
What are significant figures and why are they important in measurements?
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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.
How do you determine the number of significant figures in the number 0.004560?
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There are four significant figures in 0.004560 (4560).
What is the difference between accuracy and precision?
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Accuracy refers to how close a measurement is to the true value, while precision refers to how close repeated measurements are to each other.
What is the scientific notation for 0.00078?
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The scientific notation for 0.00078 is 7.8 × 10^-4.**Module 2: Atoms, Molecules, and Ions**
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What is the definition of chemistry?
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Chemistry is the study of matter and the changes it undergoes.
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Question:
What are the base units of the International System of Units (SI) for length, mass, and time?
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Check answerAnswer:
The base units are meter (m) for length, kilogram (kg) for mass, and second (s) for time.
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Question:
What is the formula for density?
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Density is defined as mass divided by volume (Density = mass/volume).
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Question:
What are significant figures and why are they important in measurements?
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Check answerAnswer:
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.
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input text value
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Question:
How do you determine the number of significant figures in the number 0.004560?
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Check answerAnswer:
There are four significant figures in 0.004560 (4560).
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Question:
What is the difference between accuracy and precision?
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Check answerAnswer:
Accuracy refers to how close a measurement is to the true value, while precision refers to how close repeated measurements are to each other.
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Question:
What is the scientific notation for 0.00078?
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Check answerAnswer:
The scientific notation for 0.00078 is 7.8 × 10^-4.**Module 2: Atoms, Molecules, and Ions**
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These practice questions are designed to help you review and reinforce your understanding of the key concepts covered in the Portage Learning CHEM 103 General Chemistry course, specifically from Modules 1 to 6. Each question is followed by its answer to facilitate self-assessment and learning.
Number
64 questions
Language
English
Made on
08-20-2025
Education
View all 64 quiz questions
-
What is the definition of chemistry?
Chemistry is the study of matter and the changes it undergoes. -
What are the base units of the International System of Units (SI) for length, mass, and time?
The base units are meter (m) for length, kilogram (kg) for mass, and second (s) for time. -
Convert 5 kilometers to meters.
5 kilometers is equal to 5000 meters. -
What is the formula for density?
Density is defined as mass divided by volume (Density = mass/volume). -
What are significant figures and why are they important in measurements?
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. -
How do you determine the number of significant figures in the number 0.004560?
There are four significant figures in 0.004560 (4560). -
What is the difference between accuracy and precision?
Accuracy refers to how close a measurement is to the true value, while precision refers to how close repeated measurements are to each other. -
What is the scientific notation for 0.00078?
The scientific notation for 0.00078 is 7.8 × 10^-4.**Module 2: Atoms, Molecules, and Ions** -
What is an atom?
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What are the three subatomic particles and their charges?
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Define isotopes.
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What is a molecule?
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How do you determine the number of neutrons in an atom?
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What is an ion?
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What is the formula for the compound formed between sodium (Na) and chlorine (Cl)?
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Describe the difference between a cation and an anion.
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What is a chemical reaction?
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Write the balanced chemical equation for the reaction between hydrogen gas and oxygen gas to form water.
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What is stoichiometry?
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Define the law of conservation of mass.
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How do you calculate the molar mass of a compound?
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What is a limiting reactant?
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How is percent yield calculated?
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What is an empirical formula?
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What is thermochemistry?
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Define enthalpy.
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What is an exothermic reaction?
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What is an endothermic reaction?
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How is the change in enthalpy (ΔH) calculated for a reaction?
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What is the standard state of a substance?
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Explain Hesss Law.
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What is a calorimeter used for?
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Who is credited with creating the first periodic table?
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What is the periodic law?
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Define atomic radius.
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How does atomic radius change across a period?
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How does atomic radius change down a group?
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What is ionization energy?
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How does ionization energy change across a period?
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How does ionization energy change down a group?
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Define electronegativity.
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Which element has the highest electronegativity?
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What is a covalent bond?
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What is an ionic bond?
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Define a polar covalent bond.
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What is a nonpolar covalent bond?
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What is a Lewis structure?
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What is the octet rule?
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What is resonance?
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Define VSEPR theory.
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What is hybridization in chemistry?
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Give an example of a molecule with sp3 hybridization.
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What is a sigma bond?
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What is a pi bond?
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What is the molecular geometry of water (H2O)?
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What is the bond angle in a tetrahedral molecule?
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What is a dipole moment?
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How do intermolecular forces affect boiling points?
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What are London dispersion forces?
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What is hydrogen bonding?
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What is the difference between a molecular and an ionic compound?
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What is the formula for calculating formal charge?
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What is metallic bonding?
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How does metallic bonding explain the properties of metals?
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