Question 11
How do colloidal dispersions differ from true solutions with regard to dispersed particle size and homogeneity?
A. Colloidal dispersions consist of particles that are much smaller than the average molecules and cannot scatter light.
B. Colloidal dispersions consist of particles that are much bigger than the average molecules and are big enough to scatter light.
C. Colloidal dispersions consist of particles that are much bigger than the average molecules but not big enough to scatter light.
D. Colloidal dispersions consist of particles that are on the microscopic scale, thus appearing homogeneous but are big enough to scatter light.
Editorial task: assess the alternatives and justify whether a unique answer exists.
A. Colloidal dispersions consist of particles that are much smaller than the average molecules and cannot scatter light.
B. Colloidal dispersions consist of particles that are much bigger than the average molecules and are big enough to scatter light.
C. Colloidal dispersions consist of particles that are much bigger than the average molecules but not big enough to scatter light.
D. Colloidal dispersions consist of particles that are on the microscopic scale, thus appearing homogeneous but are big enough to scatter light.
Editorial task: assess the alternatives and justify whether a unique answer exists.