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15 cards from this deck
+1+1+1 (positive)
111
000 (no charge)
−1-1−1 (negative)
000 (almost no mass)
Protons and neutrons
Orbits/energy levels around nucleus
Positive (contains protons)
In the nucleus
10−1010^{-10}10−10 metres
10−1510^{-15}10−15 metres
100,000 times smaller
Equal protons (+) and electrons (-) cancel out
Gains energy, moves to higher energy level
Loses energy, drops to lower energy level
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