The samples (except gases) weigh about 0.25 grams each, and the whole set comes in a very nice wooden box with a printed periodic table in the lid. To learn more about the set you can visit my page about element collecting for a general description and information about how to buy one,...
Carbon's discovery is lost to history. The element was known to prehistoric humans in the form of charcoal. Carbon as coal is still a major source of fuel worldwide, providing about 37% of the world's electricity, according to the World Coal Association. Coal is also a key component in...
But if you pour (or even drip) water into a container of molten metal, it's a different story: That is quite likely to cause a steam explosion that throws liquid metal all over. So when you're pouring metal into water, the biggest danger is if any water happens to splash back into ...
Iodine is element 53 on the periodic table, with element symbol I. Iodine is an element you encounter in iodized salt and some dyes. A small amount of iodine is essential for nutrition, while too much is toxic. Here are facts about this interesting, colorful element. The Name Iodine comes...
Gold is a relatively rare element on Earth, making up only about 0.0000005% of the Earth’s crust by mass. While this might seem like a tiny amount, it’s still significant enough for gold to be mined and valued as a precious metal. Most of the gold on Earth is concentrated deep und...
Learn about the element plutonium. Understand plutonium's definition, uses, how and when it was discovered, properties such as atomic number, and...
pure element on Earth as a diatomic gas, H2, but it's rare in Earth's atmosphere because it is light enough to escape gravity and bleed into space. The element remains common at the Earth's surface, where it is bound into water and hydrocarbons to be the third most abundant element. ...
formula, promotion cell metabolism and the collogen proliferation, improves the flesh to sink darkly, the wrinkle, the spot and the flaccid skin nature; The tight skin regeneration, supplements the nutrition, activates the cell which the stimulated element influence suff 正在翻译,请等待...[...
Silicon, a nonmetallic chemical element in the carbon family that makes up 27.7 percent of Earth’s crust; it is the second most abundant element in the crust, being surpassed only by oxygen. Learn more about the characteristics, distribution, and uses o
Halogen, any of the six nonmetallic elements that constitute Group 17 (Group VIIa) of the periodic table. The halogen elements are fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At), and tennessine (Ts). Learn more about the properties