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10 Cards in this Set
- Front
- Back
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Trace elements
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elements that an organism only need minute quantities of and only in certain species
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Neurons
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electrically neutral
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Protons
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one positive charge
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Electrons
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one negative charge
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Atomic nucleus
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dense core of neutrons, protons and electrons at the center of an atoms
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What makes electrons move?
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the attraction between opposite charges
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What two subatomic particles are almost identical in mass?
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protons and neutrons
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Dalton
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atomic mass unit
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Which two subatomic particles balance each other with equal presence?
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protons and electrons
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Stable isotope
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does not tend to lose particles
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