Chem 121 Comprehensive Exam Script Complete Questions Verified Solutions Form Two

CHEM 121 COMPREHENSIVE EXAM SCRIPT COMPLETE QUESTIONS VERIFIED
SOLUTIONS FORM TWO
CHEM 121 Final Question and Answer Questions
and Answers Verified Solutions Latest Update
2026/2027

Question:
kinetic molecular theory

Answer:
all matter is made of tiny particles that are constantly moving



Question:
fundamental particle

Answer:
take a macroscopic object and divide it repeatedly. Eventually you have a particle, which, if further
divided is no longer the original substance. This smallest piece of the substance is called.



Question:
h2o molecule

Answer:
the fundamental particle of water is what?



Question:
atom

Answer:
the basic unit of a chemical element



Question:

,molecule

Answer:
two or more atoms (same or different) chemically bound



Question:
element

Answer:
fundamental particle contains only one kind of atom



Question:
compound

Answer:
two or more different kinds of atoms chemically bound



Question:
the same

Answer:
in a pure substance, all the fundamental particles are what?



Question:
solution

Answer:
mixture that is uniform throughout



Question:
density

, Answer:
= mass / volume



Question:
atomic number

Answer:
number of protons in the nucleus, defines the element



Question:
mass number

Answer:
equal to the sum of protons and neutrons



Question:
isotope

Answer:
what results when you change the number of neutrons in an element?



Question:
atomic mass

Answer:
weighted average of the masses of the isotopes of an element, gives the mass of one atom of the
element



Question:
alkali metals

Answer: