I think the answer is C. An element or compound that cannot be physically separated. Sorry if im wrong.
A) heating a pan of water until the water is all gone because then it would change from a liquid top a gas.
Answer:
I guess B They have a charge
I think it'd D, atoms of more than one element can combine in different ways to form the same product.
It doesn’t let me see the picture it’s blurry.
