Chemistry·Organic chemistry · NSSCO 10.4
Alkenes
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Alkenes have a carbon-carbon double bond that makes them reactive — the building blocks of plastics. Learn their general formula, their addition reactions with bromine, hydrogen and steam, how cracking makes them, and the bromine-water test that tells them from alkanes.
What you'll learn in this lesson
By the end you should be able to (NSSCO Chemistry 10.4):
- Describe alkenes as unsaturated hydrocarbons with the general formula CₙH₂ₙ
- Describe addition reactions of alkenes with bromine, hydrogen and steam
- Describe the manufacture of alkenes by catalytic cracking
- Distinguish saturated from unsaturated hydrocarbons by structure and by bromine water / potassium manganate(VII)
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