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Adam traveled from his home in New York down to Florida for summer vacation. So you could say that Adam experienced both a change in temperature and a change of state! When we study states of matter in chemistry, it is important to focus on atoms (not Adam).

Which of the following BEST describes the differences between atoms of solid sodium and atoms of liquid sodium?


Atoms of solid sodium have smaller atomic radii than atoms of liquid sodium.


Atoms of solid sodium are more chemically reactive than atoms of liquid sodium.


Atoms of liquid sodium move around more freely than atoms of solid sodium.


Atoms of liquid sodium experience stronger attractive forces than atoms of solid sodium.

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