Addition reaction question

[something5678]

Are addition reactions also oxidation?

If you break a double bond (e.g. addition of H2 to Ethene to form Ethane) you are:
a) adding 2 hydrogen (gain in hydrogen is also oxidation)
b) adding two more electrons in order to create a stable compound.

Hence, you are gaining electrons and hydrogen. But is it oxidation? I always thought addition and oxidation were completely separate.

[Kel9901]

Are addition reactions also oxidation?

If you break a double bond (e.g. addition of H2 to Ethene to form Ethane) you are:
a) adding 2 hydrogen (gain in hydrogen is also oxidation)
b) adding two more electrons in order to create a stable compound.

Hence, you are gaining electrons and hydrogen. But is it oxidation? I always thought addition and oxidation were completely separate.

Oxidation is defined as the loss of electrons (or gain of oxygen, or loss of hydrogen), so this is actually reduction (the (carbon in) ethene is reduced to ethane). In ethene (C2H4), C has an oxidation number of -2 (as H is +1), while in ethane (C2H6), C has an oxidation number of -3.