Three treatments of different starting materials are listed. which statement explains the treatments? substance 1 was activated by a decrease in temperature, substance 2 was activated by the change in concentration, and substance 3 decreased the surface area. substance 1 was activated by a decrease in temperature, substance 2 was activated by the change in pressure, and substance 3 increased the surface area. substance 1 was activated by the heat and inactivated by ice, substance 2 was activated by the change in pressure, and substance 3 decreased the surface area. substance 1 was activated by the heat and inactivated by ice, substance 2 was activated by the change in concentration, and substance 3 increased the surface area.