This chart shows descriptions of the atoms for four different substances. which substance is a solid? object 1 object 2 object 3 object 4

The answer is Object 3. 

Atoms in a solid are locked and can only vibrate in place. So, it can't slide past each other or spread out to fill the containers (Objects 1 and 4 are out). Viscous means having a thick and sticky consistency between solid and liquid, so I'm guessing that it's something like glue or syrup, which is not a solid. That leaves Object 3 left. 

Cause its being chemically applied?