Chemistry Worksheets - Free Printable

To solve this, we need to decide if each item is a homogeneous mixture (looks the same throughout) or a heterogeneous mixture (you can see different parts).

Here is the step-by-step check for each item:

1. Alcohol: This is usually a solution like rubbing alcohol or ethanol mixed with water. It looks clear and the same everywhere. → Homogeneous
2. Apple juice box: Juice that comes in a box is filtered so you don't see pulp. It looks like one liquid. → Homogeneous
3. Beach sand: Sand has tiny rocks, shells, and dirt of different colors and sizes. You can see the different grains. → Heterogeneous
4. Black coffee: Once brewed, coffee is a dark liquid that looks the same throughout (assuming no creamer chunks). → Homogeneous
5. Cherry vanilla ice cream: You can see the white vanilla ice cream and the red cherry pieces separately. → Heterogeneous
6. Dirty pond water: This contains water, mud, algae, and bugs. It looks cloudy and chunky. → Heterogeneous
7. Fruit soda pop: Soda is a liquid with gas bubbles dissolved in it. While it fizzes, the liquid itself is uniform in color and taste. → Homogeneous
8. Granite: This rock has visible speckles of black, white, and pink minerals. You can clearly see the different parts. → Heterogeneous
9. Iron: Pure iron is an element, not a mixture. However, in these worksheets, pure substances are often grouped with homogeneous materials because they are uniform throughout. → Homogeneous
10. Pure clean air: Air is a mixture of gases (nitrogen, oxygen, etc.) that are mixed perfectly. You cannot see separate parts. → Homogeneous
11. Salad dressing: Most salad dressings (like vinaigrette) separate into oil and vinegar layers, or have herbs floating in them. → Heterogeneous
12. Spaghetti sauce: This has tomato liquid, but also chunks of meat, vegetables, and herbs. → Heterogeneous
13. Sugar: Pure sugar is a substance made of identical crystals. It is uniform. → Homogeneous
14. Tap water: Water from the tap has minerals dissolved in it, but it looks clear and the same throughout. → Homogeneous
15. Un-popped popcorn: This is a mix of hard kernels and maybe some dust/chaff. Also, inside the kernel, the starch and water are distinct phases before popping. In mixture contexts, bulk unpopped corn is considered heterogeneous because the individual kernels are separate solid objects. → Heterogeneous

Final Answer:

| Item | Classification |
| :--- | :--- |
| 1. Alcohol | Homogeneous |
| 2. Apple juice box | Homogeneous |
| 3. Beach sand | Heterogeneous |
| 4. Black coffee | Homogeneous |
| 5. Cherry vanilla ice cream | Heterogeneous |
| 6. Dirty pond water | Heterogeneous |
| 7. Fruit soda pop | Homogeneous |
| 8. Granite | Heterogeneous |
| 9. Iron | Homogeneous |
| 10. Pure clean air | Homogeneous |
| 11. Salad dressing | Heterogeneous |
| 12. Spaghetti sauce | Heterogeneous |
| 13. Sugar | Homogeneous |
| 14. Tap water | Homogeneous |
| 15. Un-popped popcorn | Heterogeneous |