CHEM 120 EXAM 3 AND LAB BUNDLED
PACKAGE NEW UPDATE FINAL STUDY
GUIDE 2026 QUESTIONS WITH ANSWERS
GRADED A+
⫸ How many multiple choice questions are on the CHEM120 Exam 3?
Answer: 37 multiple choice questions
⫸ What is oxidation in redox reactions? Answer: An increase in the
oxidation number of an atom, corresponding to the loss of electrons.
⫸ What is reduction in redox reactions? Answer: A decrease in the
oxidation number of an atom, corresponding to the gain of electrons.
⫸ What oxidation number do pure elements have? Answer: 0
⫸ What is the oxidation number of Group 2A elements in compounds?
Answer: +2
⫸ What must the sum of oxidation numbers equal in neutral
compounds? Answer: 0
⫸ What does the mnemonic OIL RIG stand for? Answer: Oxidation Is
Loss, Reduction Is Gain
, ⫸ What does LEO says GER mean? Answer: Lose Electrons Oxidation,
Gain Electrons Reduction
⫸ In the reaction 2Mg + O2 → 2MgO, what happens to magnesium?
Answer: Magnesium increases from 0 to +2 and is oxidized.
⫸ In the reaction 2Mg + O2 → 2MgO, what happens to oxygen?
Answer: Oxygen decreases from 0 to -2 and is reduced.
⫸ What is an oxidizing agent? Answer: The species that causes
oxidation in another substance by being reduced itself.
⫸ What is the prefix for a hydrocarbon with one carbon? Answer:
Meth-
⫸ What is the naming suffix for alkanes? Answer: -ane
⫸ What is the structural characteristic of alkenes? Answer: Double
bonds; CH in the middle and/or CH2 at the end.
⫸ What is the naming suffix for alkynes? Answer: -yne
⫸ What is the formula for alcohol functional groups? Answer: −OH
PACKAGE NEW UPDATE FINAL STUDY
GUIDE 2026 QUESTIONS WITH ANSWERS
GRADED A+
⫸ How many multiple choice questions are on the CHEM120 Exam 3?
Answer: 37 multiple choice questions
⫸ What is oxidation in redox reactions? Answer: An increase in the
oxidation number of an atom, corresponding to the loss of electrons.
⫸ What is reduction in redox reactions? Answer: A decrease in the
oxidation number of an atom, corresponding to the gain of electrons.
⫸ What oxidation number do pure elements have? Answer: 0
⫸ What is the oxidation number of Group 2A elements in compounds?
Answer: +2
⫸ What must the sum of oxidation numbers equal in neutral
compounds? Answer: 0
⫸ What does the mnemonic OIL RIG stand for? Answer: Oxidation Is
Loss, Reduction Is Gain
, ⫸ What does LEO says GER mean? Answer: Lose Electrons Oxidation,
Gain Electrons Reduction
⫸ In the reaction 2Mg + O2 → 2MgO, what happens to magnesium?
Answer: Magnesium increases from 0 to +2 and is oxidized.
⫸ In the reaction 2Mg + O2 → 2MgO, what happens to oxygen?
Answer: Oxygen decreases from 0 to -2 and is reduced.
⫸ What is an oxidizing agent? Answer: The species that causes
oxidation in another substance by being reduced itself.
⫸ What is the prefix for a hydrocarbon with one carbon? Answer:
Meth-
⫸ What is the naming suffix for alkanes? Answer: -ane
⫸ What is the structural characteristic of alkenes? Answer: Double
bonds; CH in the middle and/or CH2 at the end.
⫸ What is the naming suffix for alkynes? Answer: -yne
⫸ What is the formula for alcohol functional groups? Answer: −OH
