Are you mixed if your dad is fully African and your mom is fully black or is that the same thing ?

"African" doesn't mean anything. Africa has one fifth of the world's land, one sixth of nations, and one seventh of population. Africa is this big:
kai.sub.blue/images/true_size_of_africa_v3-da3dd38e.jpg

"African" is what people say when they are afraid to say "black".