Gallium is a chemical element with the symbol Ga and atomic number 31. Elemental gallium is a soft, silvery metal at standard temperature and pressure; however in its liquid state it becomes silvery white. If too much force is applied, the gallium may fracture conchoidally. It is in group 13 of the periodic table, and thus has similarities to the other metals of the group, aluminium, indium, and thallium. Gallium does not occur as a free element in nature, but as gallium(III) compounds in trace amounts in zinc ores and in bauxite. Elemental gallium is a liquid at temperatures greater than 29.76 °C (85.57 °F), and will melt in a person's hands at normal human body temperature of 37 °C (99 °F).
The melting point of gallium is used as a temperature reference point. Gallium alloys are used in thermometers as a non-toxic and environmentally friendly alternative to mercury, and can withstand higher temperatures than mercury. An even lower melting point of −19 °C (−2 °F), well below the freezing point of water, is claimed for the alloy galinstan (62–95% gallium, 5–22% indium , and 0–16% tin by weight), but that may be the freezing point with the effect of supercooling.
Gallium is predominantly used in electronics. Gallium arsenide , the primary chemical compound of gallium in electronics, is used in microwave circuits, high-speed switching circuits, and infrared circuits. Semiconducting gallium nitride and indium gallium nitride produce blue and violet light-emitting diodes (LEDs) and diode lasers. Gallium is also used in the production of artificial gadolinium gallium garnet for jewelry. Gallium is considered a technology-critical element.
My son had lots of fun with it
Surprisingly good for the price it was at. Only downside is that the container it came in cannot be warmed with your hands so to get the metal out, you have to heat it with other sources. Other than that, I think it's really neat!
I bought this for my son when we started studying the periodic table of elements. We had a great time with it.
Just ordered gallium, Mars regolith, and a few other items. Awesome products to display, and good pricing.
If you're like me, you're worried about "losing" some of the gallium due to experimentation. One of the things I was most worried about was whether it would "wet" the side of whatever container it's melted in - thus obscuring the view, and depending on where you poured it; losing material. However, I found that the plastic tube this was delivered in DOES allow it to be melted without wetting the sides, so we easily liquified and observed; and then let it cool back to frozen/solid.
This stuff is great! It comes in a little vial that I plopped in some hot water to melt down and put in a petri dish. It's very fun to play with! Sort of like a mix between soldering metal when it's super heated and mercury. I recommend getting it, even if just for display!
Everything came exactly as advertised.
My 6 year old grandson told me he HAD to have some Gallium would I get some? I had never heard of it and anyone I asked hadn't either. So he was very excited to get some! Fast shipping. He got to teach his teacher too! Thanks for making me the best Grampa ever! According to him! Stephen