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Which type of molecule dissolves in water?
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2. Chemical Components of Cells
Small Molecules
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In an atom, where is the nucleus located?
A
Inside the valence shell, between bonding electrons
B
At the center of the atom
C
In the outer electron cloud surrounding the atom
D
Randomly distributed throughout the atom due to constant motion
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Understand the structure of an atom: an atom consists of a nucleus and electrons arranged in shells around it.
Recall that the nucleus contains protons and neutrons and is located at the very center of the atom.
Recognize that electrons occupy regions called electron clouds or shells surrounding the nucleus, including the valence shell which is the outermost shell.
Note that bonding electrons are found in the valence shell, not inside the nucleus.
Conclude that the nucleus is not randomly distributed or located in the electron cloud, but is fixed at the center of the atom.
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