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8 Cards in this Set
- Front
- Back
- 3rd side (hint)
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The dense central core of the atom which contains both protons and neutrons is known as:
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the nucleus.
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Electrons are located where in an atom?
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Outside the nucleus, in energy levels.
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What are the charges of protons, neutrons, and electrons?
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protons: +
neutrons: neutral electrons: - |
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A neutral atom:
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contains an equal number of protons and electrons.
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The number of neutrons within an atom of a particular element can:
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vary.
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Atoms of the same element that have differing numbers of neutrons are called ISOTOPES.
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The number of protons in the nucleus of an atom is known as:
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the atomic number.
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The sum of the protons and neutrons in a particular isotope is known as:
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the mass number.
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If you subtract the atomic number from the mass number, you get:
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the number of neutrons in that particular isotope.
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