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Unformatted text preview: . electrons.
e. atoms. 6 . The rate of chemical reactions is
a . the concentration of the
d. all of the above
7 . A solution with a pH of 5 is a (an)
____ and contains _____
hydrogen ions than a neutral
a . base, more
b. base, fewer
c. acid, more
d. acid, fewer 2 . The number of electrons in an atom is
a . the number of neutrons.
b. the number of protons.
c. the atomic number.
d. b and c
3 . A polar covalent bond occurs when
a . electrons are not shared equally
b. two atoms share electrons
c. an electron is lost from one atom
and accepted by another.
d. the molecule becomes ionized.
e. a hydrogen atom is shared
between two different atoms. 8 . A buffer
a . slows down chemical reactions.
b. speeds up chemical reactions.
c. increases the pH of solutions.
d. maintains a relatively constant
9 . Water
a . is composed of two oxygen atoms
and one hydrogen atom....
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This document was uploaded on 03/27/2014.
- Spring '14