When something dissolves is that a physical or chemical change

Physical Change

Explanation:

Dissolving something in liquid is a physical change because only the state of the matter has changed. Allowing the water to evaporate will separate the substance from the water.

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the answer would be d

all these collisions do one thing, and that thing is explained in the last option. when dusst, rocks and ice collide, they harden and form giant layers of rocks or hard ice.

d)   to harden materials to form different parts of earth’s layers

hope it ,

bioteacher101