SCI 220 Week 2 Quiz | Full Questions and Answers | 2026 Update | 100% Correct – Nightingale College.

SCI 220 Week 2 Quiz | Full Questions and Answers | 2026 Update | 100% Correct – Nightingale
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Question 1

The octet rule refers to the:

 A. Stability of the nucleus when the protons are in a multiple of eight.
 B. Stability of the atom when there are eight electrons in the outermost energy level. ✅
 C. Stable configuration of the nucleus when there are eight more neutrons than protons.
 D. Principle that one atom can combine with a maximum of eight other atoms.

Answer: B. Stability of the atom when there are eight electrons in the outermost energy level.



Question 2

A negatively charged subatomic particle that moves around the nucleus is a(n):

 A. Orbital
 B. Proton
 C. Neutron
 D. Electron ✅

Answer: D. Electron



Question 3

Which of the following bonds are the weakest?

 A. Ionic
 B. Hydrogen ✅
 C. Electrovalent
 D. Covalent

Answer: B. Hydrogen



Question 4

The atomic number of carbon is 6. How many unpaired electrons are in its outer shell?

,  A. Two
 B. Three
 C. Four ✅
 D. Five

Answer: C. Four



Question 5

An example of a catabolic process is:

 A. Hydrolysis ✅
 B. Dehydration synthesis
 C. Formation of a peptide bond
 D. Both B and C

Answer: A. Hydrolysis



Question 6

Acids:

 A. Are proton donors.
 B. Taste sour.
 C. Release hydrogen ions in an aqueous solution.
 D. All of the above are true of acids. ✅

Answer: D. All of the above are true of acids.



Question 7

Substances that accept hydrogen ions are called:

 A. Acids
 B. Bases ✅
 C. Buffers
 D. Salts

Answer: B. Bases