Michigan M-STEP Grade 8 Science Practice Questions - Michigan Student Test Of Educational Progress Grade 8 Science Exam

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A student constructs a model of a neutral carbon atom (carbon-12) found in Michigan limestone deposits. Which statement accurately describes the location, composition, and electrical charges of the subatomic particles in this atom?

Protons (+1) and neutrons (0) are bound in the dense central nucleus, surrounded by electrons (-1) in outer energy levels. Protons (+1) and electrons (-1) form the central nucleus, while neutral neutrons orbit around the outside. Electrons (-1) and neutrons (0) are packed inside the nucleus, while positively charged protons orbit the outside. All subatomic particles carry positive charges and are evenly distributed throughout the entire volume of the atom.

Correct Answer:

Protons (+1) and neutrons (0) are bound in the dense central nucleus, surrounded by electrons (-1) in outer energy levels.

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