Photo by: Getty Images

Getty Images

Gallium Is A Metal That Melts In Your Hands

By: Discovery

Gallium will change your perception of metal.

August 01, 2019

When you think of metal, you most likely think of strength and toughness. Well, element gallium is here to change that perception.

Melts In Your Hands, Not On Your Table

The element gallium is an unexpected metal—it's a soft, silvery-white metal that is solid at room temperature (similar to aluminum) but it can literally melt in the palm of your hand. It's bizarre and a little unsettling to see, but it makes sense. The melting point for gallium (which is represented on the Periodic Table as Ga) is relatively low, at 85.6°F (29.8°C). However, the boiling point for this element is quite high, at 4044°F (2229°C). This quality makes gallium ideal for recording temperatures that would destroy a thermometer. According to the Los Alamos National Laboratory, gallium is "one of four metals — mercury, cesium, and rubidium — which can be liquid near room temperature and, thus, can be used in high-temperature thermometers. It has one of the longest liquid ranges of any metal and has a low vapor pressure even at high temperatures."

What Else Is It Good For?

Gallium is more than just a weirdo substance to poke at in the palm of your hand. As the Los Alamos National Laboratory explains, "Gallium wets glass or porcelain and forms a brilliant mirror when it is painted on glass. It is widely used in doping semiconductors and producing solid-state devices such as transistors. Magnesium gallate containing divalent impurities, such as Mn+2, is finding use in commercial ultraviolet-activated powder phosphors. Gallium arsenide is capable of converting electricity directly into coherent light. Gallium readily alloys with most metals, and has been used as a component in low-melting alloys."

This article first appeared on Curiosity.com.

Next Up

Taking a Cold Hard Look at Melting Glaciers

What is the Ice Memory Project and what will we learn about our past from this study of glaciers?

Ice Melts in Norway to Reveal Ancient Artifacts

Ice melting in Norway has revealed an Iron Age medieval mountain pass littered with near-perfectly preserved artifacts.

If The Earth's Core Is So Hot, Why Doesn't It Melt?

The Earth's core same temperature as the surface of the sun.