CCBC Chapter 2 Bio 110 Lecture Notes to help for Exam 1
Questions With Complete Solutions
A buffer Correct Answers anything that stabilizes a solution
A chemical compound Correct Answers consists of atoms of
two or more different elements combined in a fixed ratio
Acid Correct Answers a proton donor
Acid → H+ + anion
Adhesion Correct Answers the ability of water to stick to other
substances
Anions Correct Answers atoms with 5, 6, or 7 valence electrons
that gain electrons from other atoms and become negatively
charged
Atom Correct Answers the smallest unit of an element that
retains that element's chemical properties
Made up of tiny subatomic particles: neutrons, protons and
electrons
Atomic mass Correct Answers The atomic mass of an atom
equals the total number of protons and neutrons
Atomic number Correct Answers the fixed number of protons in
the atomic nucleus and determines an atom's identity and defines
the element
, Base Correct Answers a proton acceptor
NaOH → Na+ + OH-
OH- + H+ → H2O
Bond energy Correct Answers the energy necessary to break a
chemical bond
Capillary action Correct Answers Tendency of water to move in
narrow tubes, even against the force of gravity
A combination of adhesion and cohesion
Cations Correct Answers atoms with 1, 2, or 3 valence electrons
that lose electrons to other atoms and become positively charged
Chemical behavior of an atom Correct Answers is determined
by the number and arrangement of its valence electrons
Chemical Bonds Correct Answers Hold atoms together
Cohesion Correct Answers occurs when water molecules stick
to one another
Covalent Bonds Correct Answers are polar and non polar and
share electrons between atoms to fill each atom's valence shell
Double covalent bond Correct Answers two pairs of electrons
are shared
Questions With Complete Solutions
A buffer Correct Answers anything that stabilizes a solution
A chemical compound Correct Answers consists of atoms of
two or more different elements combined in a fixed ratio
Acid Correct Answers a proton donor
Acid → H+ + anion
Adhesion Correct Answers the ability of water to stick to other
substances
Anions Correct Answers atoms with 5, 6, or 7 valence electrons
that gain electrons from other atoms and become negatively
charged
Atom Correct Answers the smallest unit of an element that
retains that element's chemical properties
Made up of tiny subatomic particles: neutrons, protons and
electrons
Atomic mass Correct Answers The atomic mass of an atom
equals the total number of protons and neutrons
Atomic number Correct Answers the fixed number of protons in
the atomic nucleus and determines an atom's identity and defines
the element
, Base Correct Answers a proton acceptor
NaOH → Na+ + OH-
OH- + H+ → H2O
Bond energy Correct Answers the energy necessary to break a
chemical bond
Capillary action Correct Answers Tendency of water to move in
narrow tubes, even against the force of gravity
A combination of adhesion and cohesion
Cations Correct Answers atoms with 1, 2, or 3 valence electrons
that lose electrons to other atoms and become positively charged
Chemical behavior of an atom Correct Answers is determined
by the number and arrangement of its valence electrons
Chemical Bonds Correct Answers Hold atoms together
Cohesion Correct Answers occurs when water molecules stick
to one another
Covalent Bonds Correct Answers are polar and non polar and
share electrons between atoms to fill each atom's valence shell
Double covalent bond Correct Answers two pairs of electrons
are shared
