When excited electrons cascade to lower energy levels in an atom a)visible light is always emitted b)the potential energy of the atom increases c)the electrons always fall back to the first energy level d)the electrons fall indiscriminately to all levels e)the electrons fall back to a lower unfilled energy level
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Reduction is a reaction which results in a in electrons and a in positive charge of the atom or ion 1) a- loss 1) b- gain 2) a-increase 2) b-decrease
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Heat is the total potential energy of a substance that can be transferred. true false
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Animals that reproduce sexually either do it through external or internal fertilization. read the following statement and decide if it is true or false. birds reproduce through external reproduction which is because the female will then be able to protect the egg.
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When excited electrons cascade to lower energy levels in an atom a)visible light is always emitted b...
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