Question

Are these materials either homogeneous or heterogeneous?

(You can name them as #1=)

Thank you in advance if you are able to help me! :)

Answer 1

#1=Heterogenous

#2=Homogenous

#3=Heterogenous

#4= Heterogenous

#5= Homogenous

#6=Homogenous

#7= Heterogenous

#8=Heterogenous

#9=Homogenous