Gallium is a metal that has a very low melting point, so it can be turned into molten metal with just your own body heat. As it turns out, putting metal into a microwave is a bad idea.

What happens when you heat gallium?

Gallium is solid at normal room temperatures, but as well as mercury, cesium, and rubidium it becomes liquid when heated slightly. ... Gallium easily alloys with most metals, so it is used to form low-melting alloys.

Is gallium used in microwaves?

Gallium is used primarily in electronics. In fact, about 95 percent of all gallium produced is used to make gallium arsenide (GaAs), a compound used in microwave and infrared circuits, semiconductors and blue and violet LEDs, according to Chemistry Explained.