The pictures represent three different states of matter. Which order of pictures places molecules with the
most amount of motion to the least amount of motion?
OXYZ
Z_Y_X
Y . Z. X
YX. Z

Y → Z → X

Explanation:

The three states of matter shown in the picture are:

X) solid - in solids, molecules are bond together, so they are not free to move. They can only vibrate about their position - therefore they have the least freedom of motion

Z) liquid - in liquids, molecules are not bond, so they can move past each other. However, there are still strong intermolecular forces that keep the molecules close to each other, so they are not completely free to move - so this is the intermediate amount of motion

Y) Gas - in gases, molecules are completely free to move, since the intermolecular forces between them are negligible. Therefore, this is the state where molecules have the greatest amount of motion

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