A particular state of matter has atoms that are packed closely together and vibrating in fixed positions. A phase change occurs and the matter changes to a state where the atoms are spaced far apart and are moving about randomly. What can you infer has occurred?

Part of molten rock at mid-ocean ridges

The organism shown is a free-living one that is anchored to the bottom of ponds and streams during one stage of its life cycle what is the common name for the group to which this organism belong

The comparison of the number of atoms in a copper coin the size of a penny with the number of people on earth is made to illustrate which of the following? a. that atoms are indivisible b. that atoms are very small c. that atoms are very large d. that in a copper penny, there is one atom for every person on earth