CHEM 120 LAB PRACTICUM INTRODUCTION TO GENERAL ORGANIC AND BIOLOGICAL CHEMISTRY NEW UPDATE PRACTICE SCRIPT 2026 QUESTIONS WITH ANSWERS GRADED A+

CHEM 120 LAB PRACTICUM
INTRODUCTION TO GENERAL ORGANIC
AND BIOLOGICAL CHEMISTRY NEW
UPDATE PRACTICE SCRIPT 2026
QUESTIONS WITH ANSWERS GRADED A+

⫸ 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