Let us now take a look into the more widely known allotropes of carbon: Graphite. Plastics are made from carbon polymers. Carbon has several allotropes, or different forms in which it can exist. As we all know that carbon in all forms needs oxygen, heat, and light and forms carbon dioxide. Physical properties are usually those that can be observed using our senses such as color, luster, freezing point, boiling point, melting point, density, hardness and odor. Charcoal is commonly used for grilling food on barbeques. Physical properties are usually those that can be observed using our senses such as color, luster, freezing point, boiling point, melting point, density, hardness and odor. 14C is a radioactive isotope of carbon with a half-life of 5730 years. How does carbon-carbon compare to other non-oxide engineering ceramics? Additional facts and information regarding the Periodic Table and the elements may be accessed via the Periodic Table Site Map. It occurs in a number of allotropic forms. radiometric datingA technique used to date materials by comparing the natural abundance of radioactive atoms to their remaining decay products. Carbon is a chemical element which is non-metallic. Carbon Properties - What are the Physical Properties of Carbon? Diamond is transparent, the ultimate abrasive, and can be an electrical insulator and thermal conductor. Definition of Carbon. They are both very brittle. Chemical properties determine how carbon will react with other substances or change from one form to the other. It belongs to group 14 in the periodic table. The most popular among these are graphite and diamond. It has the lowest density among non-oxide engineering ceramics. Carbon is a chemical element which is non-metallic. Chemically pure carbon can be prepared by termic decomposition of sugar (sucrose) in absence of air. This property allows carbon to form an almost infinite number of compounds; in fact, there are more known carbon-containing compounds than all the compounds of the other chemical elements combined, except those of hydrogen (because almost all organic compounds contain hydrogen as well). Carbon monoxide (CO) is very toxic to both humans and animals. Refer to the article on Carbon for additional information and facts about this substance. The physical and chemical properties of carbon depend on the crystalline structure of the element. The answer is that when a saturated hydrocarbon is burnt in the presence of oxygen than it gives blue colour flame and this is because here fuel is burnt completely. It is of vital importance to life on Earth, allowing carbon to be continually reused and recycled.