CHAPTER 2 LECTURE QUIZ
WITH 100% CORRECT ANSWERS
GRADED A+ 2026 UPDATE!!
Matter - answer-anything that has mass and occupies space; exists in three states:
solid, liquid, and gas.
Atoms - answer-smallest unit of matter that retains original properties.
Protons - answer-in the central core of the atom; positively charged.
Neutrons - answer-in atomic nucleus; slightly larger than protons; no charge.
Electrons - answer-outside the atomic nucleus; negatively charged.
First electron shell - answer-2
Second electron shell - answer-8
Third electron shell - answer-18 - satisfied with 8
Elements - answer-substances that cannot be broken down any simpler by chemical
means. Each element is made up of some number of protons.
Atomic number - answer-number of protons in atomic nucleus; defines every element.
Mass number (atomic mass) - answer-equal to sum of all protons and neutrons in
atomic nucleus.
, Isotopes - answer-atom with same atomic number (# of protons) but different mass
number (number of neutrons)
Radioisotopes - answer-unstable isotopes; high energy or radiation released by
radioactive decay; allows isotope to assume more stable form.
Suspensions - answer-mixture containing two or more components, largely unevenly
distributed particles, will settle out when left undisturbed.
Colloids - answer-two or more components, small unevenly distributed particles, will
not settle out.
Solutions - answer-two or more components; extremely small, evenly distributed
particles; will not settle out.
Solute - answer-substance dissolved
Solvent - answer-substances that dissolve solute.
Molecules - answer-formed by chemical bonding between two or more atoms of the
same element.
Compounds - answer-formed when two or more atoms from different elements
combined by chemical bonding.
Macromolecule - answer-a molecule containing a large number of atoms, such as a
protein, nucleic acid, or synthetic polymer.
Valence shell - answer-outermost electron shell.
WITH 100% CORRECT ANSWERS
GRADED A+ 2026 UPDATE!!
Matter - answer-anything that has mass and occupies space; exists in three states:
solid, liquid, and gas.
Atoms - answer-smallest unit of matter that retains original properties.
Protons - answer-in the central core of the atom; positively charged.
Neutrons - answer-in atomic nucleus; slightly larger than protons; no charge.
Electrons - answer-outside the atomic nucleus; negatively charged.
First electron shell - answer-2
Second electron shell - answer-8
Third electron shell - answer-18 - satisfied with 8
Elements - answer-substances that cannot be broken down any simpler by chemical
means. Each element is made up of some number of protons.
Atomic number - answer-number of protons in atomic nucleus; defines every element.
Mass number (atomic mass) - answer-equal to sum of all protons and neutrons in
atomic nucleus.
, Isotopes - answer-atom with same atomic number (# of protons) but different mass
number (number of neutrons)
Radioisotopes - answer-unstable isotopes; high energy or radiation released by
radioactive decay; allows isotope to assume more stable form.
Suspensions - answer-mixture containing two or more components, largely unevenly
distributed particles, will settle out when left undisturbed.
Colloids - answer-two or more components, small unevenly distributed particles, will
not settle out.
Solutions - answer-two or more components; extremely small, evenly distributed
particles; will not settle out.
Solute - answer-substance dissolved
Solvent - answer-substances that dissolve solute.
Molecules - answer-formed by chemical bonding between two or more atoms of the
same element.
Compounds - answer-formed when two or more atoms from different elements
combined by chemical bonding.
Macromolecule - answer-a molecule containing a large number of atoms, such as a
protein, nucleic acid, or synthetic polymer.
Valence shell - answer-outermost electron shell.
