No, the bread is not heterogeneous because you can't see the individual substance.
hetergeneous
It's hetergeneous.
Yes
homogeneous
hetergeneous
homogeneous
Each part of it is different from others.
Pure salt is a homogeneous material.
An example is concrete; another is a steel.
Heterogeneous. You can see the different parts: bread, peanut butter.
A popsickle is a homogeneous mixture.
heterogeneous if it is assumed that dust particles are present