Why is a frozen Popsicle considered a homogeneous mixture

It is a homogenious mixture because it has the same consistency throughout. It is just a frozen block of juice. Think about it. It also has the same substance throughout.

Explanation:

true

hope that

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.