Explain how a piece of silver and a silver necklace can illustrate a physical change.

A chemical change is when the matter changes permanently, and a physical change is when a matter changes entirely. The best answer is when the metals melt and harden again

for example, no new evidence will demonstrate that the earth does not orbit around the sun (heliocentric theory), or that living things are not made of cells (cell theory), that matter is not composed of atoms, or that the surface of the earth is not divided into solid plates that have moved over geological timescales .