Portage Learning Chem 219 – Module 3 Exam Principles of Organic Chemistry | Questions and Answers [Verified Answers] Plus Rationales | Latest 2026/27

© Academic_Excellence



Portage Learning Chem 219 – Module 3 Exam
Principles of Organic Chemistry | Questions and
Answers [Verified Answers] Plus Rationales | Latest
2026/27



1.

What is a chemical reaction?

A. Mass change
B. Breaking and forming of bonds
C. Energy loss
D. Phase change

Answer: B
Rationale: Organic reactions involve rearrangement of
bonds.

2.

Curved arrows in mechanisms represent:

A. Atom movement
B. Electron movement

,© Academic_Excellence


C. Energy
D. Bonds only

Answer: B

3.

A nucleophile is:

A. Electron acceptor
B. Electron donor
C. Neutral atom
D. Radical

4.

An electrophile is:

A. Electron donor
B. Electron acceptor
C. Neutral
D. Stable

5.

Which is a strong nucleophile?

,© Academic_Excellence


A. H₂O
B. OH⁻
C. CH₄
D. CO₂

ADDITION REACTIONS (ALKENES)

6.

Hydrogenation of an alkene produces:

A. Alkene
B. Alkane
C. Alcohol
D. Ketone

7.

Hydrogenation requires:

A. Acid
B. Catalyst (Pd, Pt, Ni)
C. Heat only
D. Water

8.

, © Academic_Excellence


Halogenation adds:

A. H₂
B. X₂ (Cl₂, Br₂)
C. OH
D. NH₂

9.

Hydration adds:

A. H₂
B. H and OH (water)
C. X₂
D. CO₂

10.

Addition reactions break:

A. Sigma bonds
B. Pi bonds
C. Ionic bonds
D. Hydrogen bonds