1. Unsaturated Hydrocarbons
Organic Chemistry

2. Unsaturated Hydrocarbons
Any hydrocarbon that has a __________________________________ bond (s)
Refers to the idea that the carbons have __________________________________________attached to them as compared to alkanes
A place (s) where additional hydrogens would be attached has a double or triple bond (s) instead
Examples include: __________________________________________

3. Alkenes 3 Sometimes, carbon forms sp2 hybrids.
Made by an __________________________.
They are ______________________________.
The three sp2 hybrid orbitals arrange themselves as far apart as possible - which is at 120° to each other in a plane. The remaining p orbital is at right angles to them.

4. Organic Chemistry

5. These orbitals form a double bond.
Organic Chemistry
These orbitals form a double bond.

6. Organic Chemistry
Ethene

7. Figure 11.10
The s and p bonds in ethylene (C2H4)
overlap in one position - s
p overlap - 
electron density

8. Organic Chemistry
Hydrocarbons that contain only carbon and hydrogen and have at least one carbon carbon _________________bond are called _______________.

9. 2 Ethene 3 Propene 4 1-Butene _______________
Organic Chemistry
Alkenes end in ene and the prefix tells you how many carbon atoms are present.’ 2
Ethene 3
Propene 4
1-Butene
_______________

10. The number tells you where the _________________ is located.
Organic Chemistry
The number tells you where the _________________ is located.
______________
CH2=CH-CH2-CH3
______________
CH3-CH=CH-CH3

11. Start numbering at the end closest to the double bond
Organic Chemistry
Name this compound.
Start numbering at the end closest to the double bond

12. __________________________
Organic Chemistry 1 2 3 5 4
__________________________

13. Figure 11.12
Restricted rotation of p-bonded molecules
CIS
TRANS

14. Alkenes Important in manufacturing and in human and plant functioning
Hormones
Ripening fruit
Ethene used to make polymers

15. Alkynes
Sometimes the carbon atoms use the 2s electron and one of the 2p electrons, but leave the other 2p electrons unchanged. The new hybrid orbitals formed are called sp1 hybrids because they are made by an s orbital and a single p orbital. This forms a ______________________

16. Organic Chemistry

17. Organic Chemistry
Ethyne CHCH or C2H2

18. Figure 11.11
The s and p bonds in acetylene (C2H2)
overlap in one position - s
p overlap - 

19. The number tells you where the triple bond is located.
Organic Chemistry
Hydrocarbons that contain only carbon and hydrogen and have at least one carbon carbon ___________ bond are called _______________.
Alkynes end in yne and the prefix tells you how many carbon atoms are present.’
The number tells you where the triple bond is located.

20. Organic Chemistry
Name this compound

21. Organic Chemistry 6 4 3 2 1 5

22. ___________________________
Organic Chemistry 6 4 3 2 1 5
___________________________

23. Alkynes Not found in nature often Acetylene used in welding torches +
Ch---CH +

24. Benzene is the simplest aromatic compound
Aromatic Compounds
Unsaturated cyclic hydrocarbons are known as _________________________________________
Benzene is the simplest aromatic compound

25. Aromatic Compounds Benzene is An aromatic compound.
A ring of 6 C atoms and 6 H atoms.
Alternating _________________________bonds
Aromatic compounds often have _________

26. Aromatic Compounds in Nature and Medicine