June 2017 NY Regents Chemistry Exam
1 Which statement describes the structure of an atom?
(1) The nucleus contains positively charged electrons.
(2) The nucleus contains negatively charged protons.
(3) The nucleus has a positive charge and is surrounded by negatively charged electrons.
(4) The nucleus has a negative charge and is surrounded by positively charged electrons.
Solution: The nucleus contains protons (positively charged) and neutrons (neutral). Negatively charged electrons are located outside of the nucleus.
Answer: 3
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