Does sand freeze when put in the freezer?

Answer 1

Sand will not freeze. Sand is already a solid, and so is already frozen. If you were to melt sand by heating it up more than 1700°C, you could then "freeze it" by putting it in the freezer.

If it looks like sand is freezing in the freezer, it is because there is still water inside the sand that is freezing, and making the sand look like it's freezing together.