The diagrams below represent the four states of matter. A number of blue balls are loosely packed in a container. A number of yellow balls are randomly distributed in a container. Diagram 1 Diagram 2 A number of red balls are tightly and neatly packed in a container. A number of balls are positioned randomly in a container. Some are pink and labeled with a plus sign and some are blue and labeled with a minus sign. Diagram 3 Diagram 4 Which diagram represents a gas that has been ionized? diagram 1 diagram 2 diagram 3 diagram 4