BIOS 251 ANATOMY AND PHYSIOLOGY EXAM
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Which of the following would you classify as a molecule?
Cu
Fe
N
S2F - ANSWER: S2F
Which of these subatomic particles is found outside of the nucleus of an atom?
Nucleons
Protons
Neutrons
Electrons - ANSWER: electrons
Which of the following would you classify as a cation?
OH-
K+
S2-
FeO - ANSWER: K+
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If we cut a chunk of iron into smaller pieces, is it still iron no matter how small the
pieces are? - ANSWER: Yes, an atom of iron would be iron no matter how small
the pieces became.
A molecule with 14 total electrons and 12 total protons has a charge of? -
ANSWER: -2
An atom with 55 protons and 54 electrons has a charge of? - ANSWER: +1
An atom with 12 protons and 10 electrons has a charge of? - ANSWER: +2
A molecule with 76 electrons and 73 protons has a charge of? - ANSWER: -3
Which of the following would be a molecule?
Li
CuO
Mg
C - ANSWER: CuO
An atom has a mass number of 48 and 22 neutrons. How many protons would this
atom have? - ANSWER: 26
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Select all the terms we could use to describe an Al atom with a charge of +3. Select
all that apply.
Anion
Ion
Molecule
Cation - ANSWER: ion, cation
If I had an ion with 26 protons, and 28 neutrons, and 27 electrons, what would be
the charge of this ion? - ANSWER: -1
Which of the following compounds would you expect to be an electrolyte?
N2
O2
KCI
CH4
H2O - ANSWER: KCl
An ion has 26 protons, 28 neutrons, and 24 electrons. Which element is this ion? -
ANSWER: iron Fe