Whats the answer Yelp!!

False, as a substance changes from a solid to a liquid and from a liquid to a gas the molecules get farther apart from each other

Bthats what im doing to and i figured it out it is b

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).