During a class activity, students used colored candies to create models of elements, compounds, homogeneous mixtures, and heterogeneous mixtures. The students were then asked to use the models to compare and contrast mixtures and pure substances.


Which THREE observations could the students have made?
A
The candies in the dish representing elements are all one color and the candies in the dish representing the heterogeneous mixture are four different colors, so elements have only one part while heterogeneous mixtures have four different parts.
B
The dishes of candies representing compounds and homogeneous mixtures have the same ratio of different colored candies, so compounds and homogeneous mixtures are similar because they have the same ratio of their component substances.
C
The dishes of candies representing elements, compounds, and homogeneous mixtures look the same no matter which part of the dish you are looking at, so pure substances are similar to homogeneous mixtures because they both look the same throughout.
D
The candies in the dishes representing elements and compounds look the same, but the candies in the dish representing heterogeneous mixtures do not look the same, so pure substances are different than heterogeneous mixtures because pure substances look the same and heterogeneous mixtures don’t.
E
The candies in the dish representing compounds are stuck together and can’t be separated and the candies in the dishes representing the homogeneous and heterogeneous mixtures are not stuck together and can easily be separated, so compounds are different from mixtures because the parts of the compound cannot be separated.