Question

Which is an example of a chemical change?

distilling a mixture of water and alcohol

rust forming on an iron fence

the change of iodine from a solid to a purple gas

salt dissolving in a glass of water

Answer 1

THE SECOND ONE because iron becomes rust. Chemical changes occur through the process of chemical reactions, and the resulting substances have different properties because their atoms and molecules are arranged differently.

Answer 2

B.) rust forming on an iron fence