Question

what is one way to decide whether a sample of matter homogeneous or heterogéneous

Answer 1

In the heterogeneous sample we can appreciate the different materials or particles that the matter has, and by the other hand in the homogeneous the elements of the matter are equal, so we can't differentiate from each other.

Answer 2

The heterogeneous mixture is Suspensions (their particles settle if left standing, and can also be separated by filtration, and turbid to agitate particles are observed with the naked eye eg. Water frugos cocoa milk of magnesia) Colloid other is (its particles are not visible to the naked eye, a microscope is needed form clots eg. paint bleeds mayonnaise) a homogeneous mixture are the solutions (these have a single "solid" phase is a substance called solvent which is used in greater proportion and another solute call is to a lesser extent its particles are not visible to the naked eye nor with microscope common example. welding stainless steel brine)