Campbell Biology 12th Edition chapter
1 &2 study Questions And Well Verified
Answers Actual Exam!!! 2026
Matter - ANSWER -Anything that has mass and takes up space
Element - ANSWER -A substance that cannot be broken down into simpler substances
Compound - ANSWER -substance formed by the chemical combination of two or more
elements in definite proportions
essential elements - ANSWER -A chemical element required for an organism to survive,
grow, and reproduce.
trace elements - ANSWER -An element indispensable for life but required in extremely
minute amounts.
Atoms - ANSWER -smallest unit of matter
Nuetrons - ANSWER -Neutral particles that don't have an electric charge
Protons - ANSWER -Positively charged particles
Electrons - ANSWER -Negatively charged particles
Electronegativety - ANSWER -The attraction of a given atom for the electrons of a
covalent bond.
, non polar covalent bond - ANSWER -a covalent bond in which the bonding electrons are
shared equally by the bonded atoms, resulting in a balanced distribution of electrical charge
polar covalent bond - ANSWER -A covalent bond between atoms that differ in
electronegativity. The shared electrons are pulled closer to the more electronegative atom,
making it slightly negative and the other atom slightly positive.
Ions - ANSWER -positively and negatively charged atoms
Cation - ANSWER -A positively charged ion
atomic nucleus - ANSWER -An atom's dense central core, containing protons and
neutrons.
Dalton - ANSWER -A measure of mass for atoms and subatomic particles; the same as
the atomic mass unit, or amu.
atomic number - ANSWER -the number of protons in the nucleus of an atom
Atomic mass - ANSWER -The average mass of all the isotopes of an element
Isotopes - ANSWER -One of several atomic forms of an element, each with the same
number of protons but a different number of neutrons, thus differing in atomic mass.
half-life - ANSWER -length of time required for half of the radioactive atoms in a sample
to decay
radioactive isotope - ANSWER -An isotope (an atomic form of a chemical element) that
is unstable; the nucleus decays spontaneously, giving off detectable particles and energy.
radiometric dating - ANSWER -method used to determine the age of rocks using the rate
of decay of radioactive isotopes
1 &2 study Questions And Well Verified
Answers Actual Exam!!! 2026
Matter - ANSWER -Anything that has mass and takes up space
Element - ANSWER -A substance that cannot be broken down into simpler substances
Compound - ANSWER -substance formed by the chemical combination of two or more
elements in definite proportions
essential elements - ANSWER -A chemical element required for an organism to survive,
grow, and reproduce.
trace elements - ANSWER -An element indispensable for life but required in extremely
minute amounts.
Atoms - ANSWER -smallest unit of matter
Nuetrons - ANSWER -Neutral particles that don't have an electric charge
Protons - ANSWER -Positively charged particles
Electrons - ANSWER -Negatively charged particles
Electronegativety - ANSWER -The attraction of a given atom for the electrons of a
covalent bond.
, non polar covalent bond - ANSWER -a covalent bond in which the bonding electrons are
shared equally by the bonded atoms, resulting in a balanced distribution of electrical charge
polar covalent bond - ANSWER -A covalent bond between atoms that differ in
electronegativity. The shared electrons are pulled closer to the more electronegative atom,
making it slightly negative and the other atom slightly positive.
Ions - ANSWER -positively and negatively charged atoms
Cation - ANSWER -A positively charged ion
atomic nucleus - ANSWER -An atom's dense central core, containing protons and
neutrons.
Dalton - ANSWER -A measure of mass for atoms and subatomic particles; the same as
the atomic mass unit, or amu.
atomic number - ANSWER -the number of protons in the nucleus of an atom
Atomic mass - ANSWER -The average mass of all the isotopes of an element
Isotopes - ANSWER -One of several atomic forms of an element, each with the same
number of protons but a different number of neutrons, thus differing in atomic mass.
half-life - ANSWER -length of time required for half of the radioactive atoms in a sample
to decay
radioactive isotope - ANSWER -An isotope (an atomic form of a chemical element) that
is unstable; the nucleus decays spontaneously, giving off detectable particles and energy.
radiometric dating - ANSWER -method used to determine the age of rocks using the rate
of decay of radioactive isotopes
