Biology 150 Exam 1 Questions and Answers
with Verified Solutions | Latest Updated 2026
Protons positive charge
Neutron neutral charge
Electrons negative charge
Ion electrically charged atom(s) formed by the
loss or
gain of one or more electrons
Isotopes forms of an element with different numbers
of
neutrons
Atomic Number number of protons
Atomic Mass protons+neutrons
Identify the number of electrons in The number of electrons in the valance
the valence shell of an atom based shell is
on the atomic number, atomic dependent on the atomic number. 2 in the
mass, first shell
and overall charge. and 8 on each shell after.
,Covalent Bond strong attraction where 2 atoms share
electrons
Nonpolar Covalent Bond equally shared electrons
Polar Covalent Bond not equally shared, spends most of its time
closest
to the nucleus of the more electronegative
atom.
Ionic Bond electrons in one atom are completely
transferred
from one atom to the other
Positive Charge atom has more protons than electrons
Negative Charge atom has more electrons than protons
Ion atom that has a full charge
Cation positively charged ion
Anion negatively charged ion
Hydrogen Bond weak attraction between a hydrogen atom
with a
partial positive charge and another atom
(oxygen
or nitrogen) with a partial negative charge
, Predict the number of covalent In covalent bonds you can predict the
bonds formed between atoms number of
based bonds an atom will form by looking at its
on atomic number or number of valence
electrons in valence shell. electrons in its outer shell. An atom tends
to fill its
outer shell by sharing electron with other
atoms.
The number of electrons in an atoms outer
shell
determines the number of bonds it can
make
Aqueous water based environment in which
chemical
reactions occur
Hydrophillic Ion and polar molecules that stay in water
because
of their interactions with water's partial
charges.
(love water)
Hydrophobic nonpolar molecules that don't interact with
water
or dissolve in aqueous solutions. (hate
water; fats)
Cohesion attraction between like molecules
Adhesion attraction between unlike molecules
with Verified Solutions | Latest Updated 2026
Protons positive charge
Neutron neutral charge
Electrons negative charge
Ion electrically charged atom(s) formed by the
loss or
gain of one or more electrons
Isotopes forms of an element with different numbers
of
neutrons
Atomic Number number of protons
Atomic Mass protons+neutrons
Identify the number of electrons in The number of electrons in the valance
the valence shell of an atom based shell is
on the atomic number, atomic dependent on the atomic number. 2 in the
mass, first shell
and overall charge. and 8 on each shell after.
,Covalent Bond strong attraction where 2 atoms share
electrons
Nonpolar Covalent Bond equally shared electrons
Polar Covalent Bond not equally shared, spends most of its time
closest
to the nucleus of the more electronegative
atom.
Ionic Bond electrons in one atom are completely
transferred
from one atom to the other
Positive Charge atom has more protons than electrons
Negative Charge atom has more electrons than protons
Ion atom that has a full charge
Cation positively charged ion
Anion negatively charged ion
Hydrogen Bond weak attraction between a hydrogen atom
with a
partial positive charge and another atom
(oxygen
or nitrogen) with a partial negative charge
, Predict the number of covalent In covalent bonds you can predict the
bonds formed between atoms number of
based bonds an atom will form by looking at its
on atomic number or number of valence
electrons in valence shell. electrons in its outer shell. An atom tends
to fill its
outer shell by sharing electron with other
atoms.
The number of electrons in an atoms outer
shell
determines the number of bonds it can
make
Aqueous water based environment in which
chemical
reactions occur
Hydrophillic Ion and polar molecules that stay in water
because
of their interactions with water's partial
charges.
(love water)
Hydrophobic nonpolar molecules that don't interact with
water
or dissolve in aqueous solutions. (hate
water; fats)
Cohesion attraction between like molecules
Adhesion attraction between unlike molecules
