Answer:

1. chocolate chip cookies- heterogeneous

2. salt and pepper - heterogeneous

3. sandwich- heterogeneous

4. coffee- homogeneous

5. orange juice- homogeneous

6. vegetable salad-heterogeneous

7. milk- homogeneous

8. water- homogeneous

9. air- homogeneous

10. ketchup- homogeneous

11. milk and cereal- heterogeneous

12. alcohol- homogeneous

13. jellybeans- heterogeneous

14. burger- heterogenous

15. cooking oil- homogenous

A homogeneous mixture has the same uniform appearance and composition throughout. Many homogeneous mixtures are commonly referred to as solutions. A heterogeneous mixture consists of visibly different substances or phases.