Carbon comp
- 1. CARBON & ITS COMPOUNDS
- 2. CARBON 2 Carbon & its compounds 9/23/2014
- 3. CARBON Carbon belongs to the group IV of the periodic table. It has four electrons in its outermost orbit, so its valency is four. Carbon is a non-metal. 3 Carbon & its compounds 9/23/2014
- 4. Compounds of Carbon are Widely Distributed in Nature!!!!!! The number of carbon compounds is larger than that of all other elements put together. 4 Carbon & its compounds 9/23/2014
- 5. Why so many Carbon Compounds in nature? Because carbon is chemically unique. Only carbon atoms have the ability to combine with themselves to form long chains 5 Carbon & its compounds 9/23/2014
- 6. Carbon- Long Chains A long chain, in turn, provides a convenient backbone of atoms to which other atoms can attach themselves in a variety of ways 6 Carbon & its compounds 9/23/2014
- 7. Allotropes of Carbon In nature, pure carbon occur in two forms- Diamond Graphite 7 Carbon & its compounds 9/23/2014
- 8. What are Allotropes ? Allotropes are elements which are chemically identical, but they differ markedly in their physical properties. Diamond and Graphite – two allotropes of carbon differ in their physical properties. 8 Carbon & its compounds 9/23/2014
- 9. Physical Properties of Diamond and Graphite Property Diamond Graphite Appearance Transparent Black, Shiny Hardness Very Hard Soft, slippery to touch Thermal Conductivity Very poor moderate Electrical Conductivity Poor Good conductor Density(kg/m3) 3510 2250 Uses Jewellery, drilling Dry cell, electric arc, lubricant, pencil lead 9 Carbon & its compounds 9/23/2014
- 10. How Diamond and Graphite are chemically identical? These results of these experiments answer this question: On heating diamond or graphite in the air, they burn completely to form carbon dioxide. Equal quantities of diamond and graphite when burned, produce exactly the same amount of carbon dioxide. 10 Carbon & its compounds 9/23/2014
- 11. Why the physical properties of diamond and graphite are so different? Due to the difference in the arrangement of carbon atoms in diamond and graphite 11 Carbon & its compounds 9/23/2014
- 12. Hydrocarbons Hydrocarbons are compounds of carbon and hydrogen. The natural source of hydrocarbons is petroleum (crude oil) 12 Carbon & its compounds 9/23/2014
- 13. The Simplest Hydrocarbon A molecule of methane has four hydrogen atoms linked to one central atom of carbon. Methane CH4 13 Carbon & its compounds 9/23/2014
- 14. H y d r o c a r b o n s S a t u r a t e d A l k a n e s 14 Carbon & its compounds 9/23/2014
- 15. Alkanes The hydrocarbons methane, ethane propane and butane form a series of carbon compounds known as alkanes The alkane series can be represented by the general formula 15 Carbon & its compounds 9/23/2014
- 16. Isomerism Compounds having the same molecular formulae but different structural arrangement of atoms in them are known as isomers, and the phenomenon is known as isomerism Isomers of Butane – Obtained by rearranging the carbon and the hydrogen atoms 16 Carbon & its compounds 9/23/2014
- 17. Unsaturated Hydrocarbons Unsaturated hydrocarbons contain a double or triple bond between two carbon atoms. The one with double bond are called alkenes 17 Carbon & its compounds 9/23/2014
- 18. Alkenes An alkene, olefin, or olefine is an unsaturated chemical compound containing at least one carbon–carbon double bond 18 Carbon & its compounds 9/23/2014
- 19. Alkynes Unsaturated hydrocarbons which contain triple bond between two carbon atoms. 19 Carbon & its compounds 9/23/2014
- 20. Conclusion Carbon, a non-metal, occurs in free as well as in combined form All living creatures are based on it Its amount in the earth’s crust and in the atmosphere is quite meagre. Carbon forms a large number of compounds with itself and with the atoms of other elements Also many studies based on carbon are still going on… 20 Carbon & its compounds 9/23/2014