A scientist has a container with a substance inside. At first, the molecules in the substance move away from each other. Later, the molecules move around each other. What change did the scientist observe in the substance? Responses a Before, the substance was a liquid. Later, it was a solid. Before, the substance was a liquid. Later, it was a solid. b Before, the substance was a gas. Later, it was a liquid. Before, the substance was a gas. Later, it was a liquid. c Before, the substance was a liquid. Later, it was a gas. Before, the substance was a liquid. Later, it was a gas. d Before, the substance was a solid. Later, it was a liquid. Before, the substance was a solid. Later, it was a liquid.