Exam 1: CHEM120 / CHEM 120 (Latest Update 2025 / 2026) Intro to General, Organic & Biological Chemistry with Lab | Review Questions & Answers | Grade A | 100% Correct - Chamberlain

Exam 1: CHEM120 / CHEM 120
(Latest Update ) Intro to
General, Organic & Biological
Chemistry with Lab | Review
Questions & Answers | Grade A |
100% Correct - Chamberlain


Question:
What is the charge of each:
A molecule with 14 total electrons and 12 total protons_____. An atom with 55
protons and 54 electrons______. An atom with 12 protons and 10
electrons______. A molecule with 76 electrons and 73 protons ______
Answer:
-2
+1
+2
-3

,Question:
If an atom of F were to form an ion, how many electrons would you think an
atom of this element would gain or lose?


a. Gain two electrons
b. Lose one electron
c. Lose two electrons
d. Gain one electron
Answer:
Gain one electron




Question:
Sort the following as a cation vs an anion.
Answer:
Anion- O2-, OH-, An atom with more electrons than protons


Cation- H3O+,Mg2+, An atom with more protons than electrons

,Question:
Select all of the following that would be classified as an ion.


a. Fe3+
b. F-
c. MgS
d. C4H10
e. PO43-
Answer:
Fe3+
F-
PO43-




Question:
Which of the following would you expect to form a molecular compound?
Answer:
Hydrogen and sulfur

, Question:
A molecule has more electrons than protons. I would expect this molecule to
be classified as a(n):


a. Cation
b. Element
c. Anion
d. Isotope
Answer:
Anion




Question:
What do O, S, and Se have in common? Select all that apply.
Answer:
They are all non-metals


They are members of the same group


They have the same number of valance electrons