BIOLOGY 150 EXAM 1 QUESTIONS WITH
CORRECT ANSWERS 2026
Protons - CORRECT ANSWER -positive charge
Neutron - CORRECT ANSWER -neutral charge
Electrons - CORRECT ANSWER -negative charge
Ion - CORRECT ANSWER -electrically charged atom(s) formed by the loss or gain of one or more
electrons
Isotopes - CORRECT ANSWER -forms of an element with different numbers of neutrons
Atomic Number - CORRECT ANSWER -number of protons
Atomic Mass - CORRECT ANSWER -protons+neutrons
Identify the number of electrons in the valence shell of an atom based on the atomic number,
atomic mass, and overall charge. - CORRECT ANSWER -The number of electrons in the valance
shell is dependent on the atomic number. 2 in the first shell and 8 on each shell after.
Covalent Bond - CORRECT ANSWER -strong attraction where 2 atoms share electrons
Nonpolar Covalent Bond - CORRECT ANSWER -equally shared electrons
, Polar Covalent Bond - CORRECT ANSWER -not equally shared, spends most of its time closest to
the nucleus of the more electronegative atom.
Ionic Bond - CORRECT ANSWER -electrons in one atom are completely transferred from one
atom to the other
Positive Charge - CORRECT ANSWER -atom has more protons than electrons
Negative Charge - CORRECT ANSWER -atom has more electrons than protons
Ion - CORRECT ANSWER -atom that has a full charge
Cation - CORRECT ANSWER -positively charged ion
Anion - CORRECT ANSWER -negatively charged ion
Hydrogen Bond - CORRECT ANSWER -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 bonds formed between atoms based on atomic number or
number of electrons in valence shell. - CORRECT ANSWER -In covalent bonds you can predict
the number of bonds an atom will form by looking at its valence 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 - CORRECT ANSWER -water based environment in which chemical reactions occur
CORRECT ANSWERS 2026
Protons - CORRECT ANSWER -positive charge
Neutron - CORRECT ANSWER -neutral charge
Electrons - CORRECT ANSWER -negative charge
Ion - CORRECT ANSWER -electrically charged atom(s) formed by the loss or gain of one or more
electrons
Isotopes - CORRECT ANSWER -forms of an element with different numbers of neutrons
Atomic Number - CORRECT ANSWER -number of protons
Atomic Mass - CORRECT ANSWER -protons+neutrons
Identify the number of electrons in the valence shell of an atom based on the atomic number,
atomic mass, and overall charge. - CORRECT ANSWER -The number of electrons in the valance
shell is dependent on the atomic number. 2 in the first shell and 8 on each shell after.
Covalent Bond - CORRECT ANSWER -strong attraction where 2 atoms share electrons
Nonpolar Covalent Bond - CORRECT ANSWER -equally shared electrons
, Polar Covalent Bond - CORRECT ANSWER -not equally shared, spends most of its time closest to
the nucleus of the more electronegative atom.
Ionic Bond - CORRECT ANSWER -electrons in one atom are completely transferred from one
atom to the other
Positive Charge - CORRECT ANSWER -atom has more protons than electrons
Negative Charge - CORRECT ANSWER -atom has more electrons than protons
Ion - CORRECT ANSWER -atom that has a full charge
Cation - CORRECT ANSWER -positively charged ion
Anion - CORRECT ANSWER -negatively charged ion
Hydrogen Bond - CORRECT ANSWER -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 bonds formed between atoms based on atomic number or
number of electrons in valence shell. - CORRECT ANSWER -In covalent bonds you can predict
the number of bonds an atom will form by looking at its valence 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 - CORRECT ANSWER -water based environment in which chemical reactions occur
