Radioactive dating uses the radioisotope - BBC - GCSE Bitesize: Uses of half life


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In the crust of Earth, elemental carbon is a minor component. However, carbon compounds (., carbonates of magnesium and calcium ) form common minerals (., magnesite , dolomite , marble , or limestone ). Coral and the shells of oysters and clams are primarily calcium carbonate. Carbon is widely distributed as coal and in the organic compounds that constitute petroleum , natural gas , and all plant and animal tissue . A natural sequence of chemical reactions called the carbon cycle —involving conversion of atmospheric carbon dioxide to carbohydrates by photosynthesis in plants, the consumption of these carbohydrates by animals and oxidation of them through metabolism to produce carbon dioxide and other products, and the return of carbon dioxide to the atmosphere —is one of the most important of all biological processes.

As carbon dioxide, it can be found in dry ice, fire extinguishers, carbonated and fizzy drinks. Vegetal carbon is sometimes used as a gas absorbent or bleaching agent. The same element is utilized as a decorative tool for jewelry. Many inkjet printers employ carbon as ink base. It is applied as a black fume pigment in car rims.


Radioactive dating uses the radioisotope

Radioactive dating uses the radioisotope