Question

witch of the following is a heterogeneous mixture?
a) air
b) salt water
c) steel
d) soil

Answer 1

Let's start with salt water. we know that the equation is this.

\[NaCl(aq) --> Na(aq) + Cl(aq) \]

aq means aqueous that we have dissolved something in water, which is our solvent.
now because salt dissolves in water, the solution is not heterogenous but rather homogenous.

the clearest depiction of a heterogenous mixture may be soil, because when mixed you can distinguish among the components.

Answer 2

thanks