3.6 & 3.7 Recall that alkenes have the general formula CNH2N

Take a photo of it and upload to your blog (see sample below)

4. What is the general formula for alkenes?
CNH2N

5. Describe and explain the trend in boiling point
The boiling point increases as there stronger intermolecular forces that require more energy to be broken

6. Explain why there is no such compound as methene
To be classified as an alkene it requires at least one double bond

7. How do you quickly identify from the displayed formula that the hydrocarbon is unsaturated?
Check the general formula that it is not CNH2N+2(i.e. does not only include single bonds)