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Atomic Structure

Atomic Structure
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Across
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A neutral sub-atomic particle found in the nucleus of an atom
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Atoms of the same element that have a different number of neutrons
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The total number of protons and neutrons in the nucleus of an atom
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Number of protons in the nucleus, unique to each element
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Process by which the nucleus of an atom spontaneously changes itself by giving off particles or energy
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Negatively charged sub-atomic particle found outside the nucleus
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The force that holds the nucleus together
Down
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Positively charged sub-atomic particle in the nucleus
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Center of the atom, made of protons and neutrons
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An atom with a positive or negative charge
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Four ideas that explain the basic unit of matter
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The process during which a nucleus undergoes a spontaneous change