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Chemistry
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HESI A2
HESI A2 Version 3
Chemistry
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Question 1 of 12
Which of the following must be present in order to be considered an organic molecule?
A. H
B. O
C. N
D. C
Correct Answer:
Rationale:
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Question 2 of 12
An atom of oxygen has more electrons than a neutral oxygen atom. What is this called?
A. Isotope
B. Ion
C. Both are correct
D. None of the above
Correct Answer:
Rationale:
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Question 3 of 12
A carbon atom with fewer neutrons than a neutral carbon atom is known as what?
A. Isotope
B. Ion
C. Both are correct
D. None of the above
Correct Answer:
Rationale:
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Question 4 of 12
An atom has a mass of 16 and 6 protons. What element is it, and how many neutrons are there?
A. Sulfur, 10
B. Sulfur, 22
C. Carbon, 10
D. Carbon, 22
Correct Answer:
Rationale:
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Question 5 of 12
Which subatomic particle can always be used to identify an atom?
A. Protons
B. Neutrons
C. Electrons
D. None of the above
Correct Answer:
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