all lectures and discussions about Alkenes --- (1).pptx

lectures and discussions about alkenes. definitions and more.

1. WHICH BETWEEN THESE TWO IS AN ALKENE?

2. Learning Objectives Differentiate alkenes and alkynes; Name some alkenes and alkynes; and Explain the importance of unsaturated compounds in every day life.

3. Hydrocarbons that contain one or more double bonds between carbon atoms. unsaturated hydrocarbons . The naming in alkynes is the same with the naming with alkenes. The only difference is that the suffix for alkenes is – ene . C n H 2n ALKENE

4. No. of Carbons Prefix Suffix 1 meth- - ene 2 eth- 3 prop- 4 but- 5 pent- 6 hex- 7 hept - 8 oct - 9 non- 10 dec - Naming Alkene

5. How many carbons does a heptene contain? 7

6. How about pentene? 5

7. C n H 2n What is the molecular formula of pentene following its general formula? Answer: C 5 H 10

8. C n H 2n How about the molecular formula of butene ? Answer: C 4 H 8

9. WELCOME TO THE CARBON WORLD! Cycloalkenes

10. What are the missing words about alkenes and bonds? Alkenes are homologous series of hydrocarbons with a general formula ________________. Cycloalkenes are hydrocarbons which contain ____________ of carbon atoms. LEARNING CHECK!

11. ALKYNE Unsaturated hydrocarbons that contain one or more triple bonds between carbon atoms in a chain. The naming in alkynes is the same with the naming with alkenes. The only difference is that the suffix for alkynes is – yne .