Butene

But- → beautiful → door → four → 4 carbon atoms

-ene → Queen → two James Bonds → double bond → double carbon bond

 

 

Or

Which looks like

 

Or

 

So butene = C₄H₈

C₄H₈

C₄H₈ is 

Or

Which looks like

Or

 

4 carbon atoms → four → door → beautiful → But-

Double carbon bond → double bond → two James Bonds → Queen → -ene

 

C₄H₈ = butene

More Info