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Uranium is the first radioactive element discovered by human. When mentioning the element, you may think about nuclear weapon, the cold war, and risking millions of innocent lives on the edge of extinction. However, this is only a very tiny little co…

09/10

2024

the disappearing element——copper

Copper Copper is known to be essential to all living organisms as it is a key component of the respiratory enzyme complex cytochrome C oxidase. Without copper, respiration would not occur and therefore life would not exist. Thus, there is no need for…

06/06

2024

The disappearing element——Gold

Gold was the first metal recognized by human, as it is one of the least active elements of metals. It doesn't even react with oxygen in air. You must have heard of oxidized iron, oxidized copper, and even oxidized silver, but you must not have heard …

05/24

2024

The disappearing elements——Iron

Iron is one of the most important elements on earth. It plays a vital role in the development of the civilization, and it is also important for the transportation of oxygen for most organism. The changing gravity on earth. Iron composes approxi…

02/23

2024