![]() It is a major element in many rock formations such as limestone and marble. Carbon also has the highest melting point of all the elements.Ĭarbon is found throughout the earth. One of the key characteristics of carbon is its ability to make long chains of molecules through linking up with other carbon atoms. Amorphous carbon is generally black and is used to describe coal and soot. Graphite, on the other hand, is one of the softest materials and is black-gray in color. It also has the highest thermal conductivity of any element. In its diamond allotrope, carbon is the hardest known substance in nature. Each allotrope of carbon has different physical properties. Allotropes are materials made from the same element, but their atoms fit together differently. Click here to learn more about the carbon cycle.Ĭarbon is found on Earth in the form of three different allotropes including amorphous, graphite, and diamond. Carbon is the fourth most abundant element in the universe by mass and the second most abundant element in the human body.Ĭarbon is constantly cycled through the Earth's oceans, plant life, animal life, and atmosphere. It forms more compounds than any other element and forms the basis to all plant and animal life. Discovered by: Carbon has been known about since ancient timesĬarbon is one of the most important elements to life on planet Earth.Density: amorphous: 1.8 to 2.1, diamond: 3.515, graphite: 2.267 grams per cm cubed. ![]()
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