This is a picture of two atoms that are together,- compound

This is a picture of a water fountain, it is pure water- it is a pure substance

This is a picture of a water bottle with salt water, the salt water makes it a solution.

This picture of a floor is heterogeneous, because you can pick out the individual parts.

This is a picture of a wall that you can see has the same particles and are in a pattern that you can see, so it is homogeneous.