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In a simplified model of the atom, what is the dense center of an atom called?
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4. Atoms and Elements
The Atom (Simplified)
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An atom is electrically neutral because it has which of the following properties?
A
It has equal numbers of protons and neutrons.
B
It has equal numbers of protons and electrons.
C
Its nucleus has no net charge.
D
It contains neutrons, which cancel the charge of electrons.
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Understand that an atom is electrically neutral when the total positive charge balances the total negative charge.
Recall that protons carry a positive charge, electrons carry a negative charge, and neutrons have no charge.
Recognize that the nucleus contains protons and neutrons, but only protons contribute to the positive charge.
Since neutrons are neutral, they do not affect the overall charge of the atom.
Therefore, the atom is neutral because it has an equal number of protons (positive charges) and electrons (negative charges), balancing each other out.
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