Chem 120 Lab Practicum Exam COMPREHENSIVE
QUESTIONS WITH MULTIPLE CHOICES |VERIFIED &
REVISED ANSWERS (NEW) 2025
Scientific Method - answer--Consist of observation, hypothesis, experimental
design, results, and theory
independent variable - answer--variable that is manipulated
dependent variable - answer--The measurable effect, outcome, or response
Theory - answer--Explains why you got the results.
Protons - answer--positively charged particles in the nucleus
Neutron - answer--no charge, found in nucleus
Electron - answer--negatively charged particle outside the nucleus
atomic number - answer--the number of protons in the nucleus of an atom
Mass number - answer--the total number of protons and neutrons in the nucleus
of an atom
Ions - answer--positively and negatively charged atoms
, Cation - answer--A positively charged ion - metal
Anion - answer--A negatively charged ion - nonmetal
Isotope - answer--Atoms of the same element that have different numbers of
neutrons
C-14 - answer--6 protons, 8 neutrons, 6 electrons
ionic compound properties - answer--Metal and non metal; completely dissociat
in water
name molecular (covalent) compounds - answer--Two or more nonmetals; add
prefixes; 1st element retains name - add ide to second element
ionic compound - answer--metal and nonmetal; no prefixes; name cation then
anion - add ide to anion
1 - answer--Mono
2 - answer--Di
3 - answer--Tri
QUESTIONS WITH MULTIPLE CHOICES |VERIFIED &
REVISED ANSWERS (NEW) 2025
Scientific Method - answer--Consist of observation, hypothesis, experimental
design, results, and theory
independent variable - answer--variable that is manipulated
dependent variable - answer--The measurable effect, outcome, or response
Theory - answer--Explains why you got the results.
Protons - answer--positively charged particles in the nucleus
Neutron - answer--no charge, found in nucleus
Electron - answer--negatively charged particle outside the nucleus
atomic number - answer--the number of protons in the nucleus of an atom
Mass number - answer--the total number of protons and neutrons in the nucleus
of an atom
Ions - answer--positively and negatively charged atoms
, Cation - answer--A positively charged ion - metal
Anion - answer--A negatively charged ion - nonmetal
Isotope - answer--Atoms of the same element that have different numbers of
neutrons
C-14 - answer--6 protons, 8 neutrons, 6 electrons
ionic compound properties - answer--Metal and non metal; completely dissociat
in water
name molecular (covalent) compounds - answer--Two or more nonmetals; add
prefixes; 1st element retains name - add ide to second element
ionic compound - answer--metal and nonmetal; no prefixes; name cation then
anion - add ide to anion
1 - answer--Mono
2 - answer--Di
3 - answer--Tri
