Melting Point:The temperature at which a solid substance changes into its liquid state. For gallium, it has a very low melting point of 29.76 degrees Celsius.
Semiconductor: A material that has electrical conductivity between that of an insulator and that of a conductor. Gallium is often used in semiconductors to control the flow of electricity.
Alloy:A mixture composed of two or more elements, at least one of which is a metal. Gallium can be mixed with other metals to form alloys with unique properties.