when a object float it has density
How
If an object floats it is less dense than the substance it's floating in.
If an object floats in water it will also float in the much denser mercury
It is impossible to tell; whether an object floats or sinks depends on its density, not on its weight.
The Density.
Color
If the object is floating, then the buoyant force is equal to the object's weight.
If the object is floating, then the buoyant force is equal to the object's weight.
Well usually, the bigger the volume, the better it floats. But mostly, it matters about how much mass an object contains.
the amount of density
An object floats when the objects density is LESS than the liquid your using.
If the object is floating, then the buoyant force is equal to the object's weight.
If the object sinks or floats depends on mass or weight. The object can be made of the same material, but if the weight is not the same (say if it is heavery than water) it will sink.