CHEM 120 EXAM (2025) ACTUAL EXAM (DETAILED & ELABORATED) COMPREHENSIVE QUESTIONS AND VERIFIED ACCURATE SOLUTION 2025 TEST!!

CHEM 120 EXAM (2025) ACTUAL EXAM (DETAILED &
ELABORATED) COMPREHENSIVE QUESTIONS AND VERIFIED
ACCURATE SOLUTION 2025 TEST!!

Question 1

Fill in the blank. Wavelength x _____ = speed of light

A) Energy

B) Mass

C) Speed

D) Amplitude

E) Frequency

Correct Answer: E) Frequency

Rationale: The provided text states, "Wavelength x FREQUENCY =

speed of light (𝝀v = c)".


Question 2

If electrons and protons have opposite charges, why don't they stick

together?

A) Protons repel each other.

B) Electrons are too small to be pulled in.

C) The nucleus has a neutral charge.

D) They are constantly creating new particles.

E) Electrons move fast enough around the nucleus to not be pulled

in.

Correct Answer: E) Electrons move fast enough around the nucleus to

not be pulled in

, Rationale: The provided text states, "Electrons move fast enough

around the nucleus to not be pulled in".


Question 3

What is the phenomenon described as: if an object is heated enough, it will

start to glow/emit light?

A) Photoelectric Effect

B) Compton Effect

C) Heisenberg Uncertainty Principle

D) Wave-Particle Duality

E) Blackbody Paradox

Correct Answer: E) Blackbody Paradox

Rationale: The provided text states, "What is the Blackbody Paradox?

If an object is heated enough, it will start to glow/emit light".


Question 4

True or False: As frequency increases, wavelength decreases.

A) True

B) False

C) Only in a vacuum.

D) Only in a specific medium.

E) Only for electromagnetic waves.

Correct Answer: A) True

Rationale: The provided text states, "True or False. As frequency

increases, wavelength decreases True (inversely related)".