Question

What is a double bond?

Answer 1

A double bond is when the bond has two attractions, so, two bonds. 

Like this:-

C=C    ←  Double bond
C≡C     ←  Triple bond  

Answer 2

Answer:

A covalent bond between 2 atoms where each atom contributes 2 electrons. Hope this helps!

Explanation:

a p e x — : )