In 1875, the French chemist Bois Baudland held in his hand the splenite from the Pyrenees, after that, he discovered this metal with a slight blue light, after which people gradually learned that when it was 29.76 ° C, it would dissolve into a silvery-white liquid, which is the mysterious gallium, we know that mercury and gallium are basically similar in appearance, in the liquid state, they can also show a silvery liquid, how do we distinguish them?
After in-depth study of it, the foreign brother personally explained the differences between them, for example, mercury is already liquid at room temperature, gallium must be heated by warm water to become liquid, imagine if in a good atmosphere of the party, you give a friend a spoon and a cup of hot tea. As she stirred the hot tea with the spoon, a magical scene occurred, and the spoon in her hand actually "melted". At this scene, I think her expression must be very exciting.
At that time you can tell her that this is just a "little trick", through some chemical knowledge can be achieved, this trick, you need to use a metal is what we call gallium today, the reason is that gallium in the room temperature environment, belongs to the solid state, once we put it in warm water, it will be melted, which means that when you hold it in the palm of your hand, just a few minutes, you can witness the process of gallium from solid to liquid, at that time, it will become like mercury, you may say, The melted gallium is also very similar to aluminum, but there are not many liquid metals in life that can make you touch and will not burn you, and most importantly, it is not poisonous!
As a result, gallium has gradually become a major prop in the pranks of the chemical world. It is worth noting that the spoon made of gallium, usually the hardness is not very large, when struck with a hammer, it can leave traces on it, multiple knocks can even be knocked into 2 halves, you can understand that gallium this metal is very tough when hard, soft when it can really do the second to become liquid, in the experiment, when the gallium metal solid located in the container, after contact with concentrated sulfuric acid, we see it quickly melted into liquid, encounter low temperature environment, it gradually becomes a solid metal, it is worth mentioning that gallium in the liquid state Its surface has a strong tension, at this time, even if you scatter it, it can quickly condense, in the experiment, he sucked the liquid gallium with a needle, and then hit the liquid again, after that, the liquid gallium became a bead of water adsorbed together, and the last scene looked like gallium opened the "demon eye". What magic does such a gallium have?
There are foreigners with the syringe in their hands to drop metal gallium on this metal lock, at first, this metal lock did not have any adverse reactions, so he took out a silver needle, scratched several scratches on the metal lock, this time he will be liquid metal gallium drops on the scratched metal lock, unexpectedly, after the liquid metal gallium solidified, we can obviously see that the metal lock has been corroded by the metal gallium, this time the metal lock, just a light pinch, will become shattered, so it seems that the metal gallium is still quite scary, Incidentally, it's also expensive, with 1 kilogram of gallium costing about $3,000, so it's recommended that you don't try it yourself. Friends who like this video don't forget to pay attention to me, thank you for watching, we will see you in the next issue.