An atom has 2 protons,2 neutrons,and 2 electrons;it has an atomic
A) number of 6.
B) weight of 2.
C) weight of 6.
D) number of 4.
Correct Answer:
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Q22: Zinc,selenium,cobalt,and iodine are all
A)trace elements.
B)compounds.
C)radioactive.
D)isotopes of hydrogen.
Q24: An atom has 1 proton,0 neutrons,and 1
Q27: Which of the following carries no net
Q28: Iron is a(n)
A) anion.
B) electrolyte.
C) acid.
D) cation.
Q29: What happens when HCl is added to
Q30: Which of the following illustrates antacid activity?
A)
Q32: Na⁺
A) is an an ion.
B) is
Q33: Blood has a pH range of 7.35
Q34: A combination of sugar granules and iron
Q36: Which of the following best describes a
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