A mixture can be classified as heterogenous or homogenous.
Heterogenous:
Components can be distinguished with the human eye.
Properties and composition are different throughout the mixture.
Mixtures are separated through mechanical processes.
Homogenous:
Particles cannot be distinguished with the human eye, requiring a microscope.
Properties and composition are uniform throughout the mixture.
Mixtures are separated through processes requiring state-change.
Hope it helped,
BioTeacher101