Gallium/ˈɡæliəm/ Definition 1 of 1Pro Tip 1/3Soft Metal Gallium is very soft, can even be cut with a knife. In the lab, we sliced the gallium into small pieces easily. Pro Tip 2/3Low Melting Point Gallium melts just above room temperature, unlike most metals. The gallium sample melted in my hand during the experiment. Pro Tip 3/3Tech Industry Gallium is often used in electronics, such as semiconductors and LEDs. The new smartphone uses a gallium-based chip.