Question

Sand is made of tiny pieces of rock that have been worn down by wind and water. Explain why the formation of sand is a physical change.

Answer 1

It's a physical change because the physical of a once bigger rock, is now a smaller rock that was worn down by natural factors.

Answer 2

Explanation: The formation of sand is a physical change because some of the physical properties of the rocks change, but their identities do not. The particles of rock are rearranged as their sizes and shapes change, but their identities and total mass remain the same.