Which one of the following is TRUE regarding electrons, shells, and energy?
A) Electrons are located in shells around the nucleus.
B) Electrons are attracted to each other because they have the same charge.
C) In order for an electron to move closer to the nucleus, it must absorb energy.
D) The innermost electron shell has the most potential energy.
E) As an electron moves to a shell further from the nucleus, it loses energy.
A
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Indicate whether the statement is true or false.Heavy rains cause water speed in a river to increase and the river to overflow its banks. A scientist who has studied the river wants to determine the effects of this rain event on the river's ecological community. How could the scientist safely investigate these effects?
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