which process is a chemical change?\n○ breaking of glass\n○ formation of frost\n○ magnetization of an iron…

which process is a chemical change?\n○ breaking of glass\n○ formation of frost\n○ magnetization of an iron nail\n○ loss of atmospheric ozone

which process is a chemical change?\n○ breaking of glass\n○ formation of frost\n○ magnetization of an iron nail\n○ loss of atmospheric ozone

Answer

Brief Explanations:

A chemical change results in new substances with different chemical properties. Breaking glass is a physical change as it only changes the shape. Frost formation is a phase - change (physical). Magnetization of an iron nail doesn't change its chemical composition. Loss of atmospheric ozone involves chemical reactions where ozone ($O_3$) is converted into other substances like oxygen ($O_2$), which is a chemical change.

Answer:

loss of atmospheric ozone