Is a kids bike chain spaced differently?
I bought a standard chain at the store for my friends kids barbie bike. It seems to fit fine on the rear sprocket but the fron sprocket won't accept the spacing of the chain. Is there a different spacing for chains?
Yes, there are different chains available. There are generally speaking 2 pitches:
3/32 for dérailleur equipped bikes
1/8 for single speed and internal geared bikes like old 3 speeds
So unfortunately, there is no single common chain with bikes. Check out the links below for more.