Why is "pure orange juice" not a pure substance?

Orange juice is a mixture of many things, sweet things, fruit smashings, water, etc.

To understand why "pure orange juice" is not a pure substance, let's break it down. "Pure" means that a substance contains only one type of molecule or element and does not have any impurities or other substances mixed in. Orange juice, on the other hand, is a mixture of various components including water, sugars, acids, vitamins, minerals, and of course, the natural compounds found in oranges such as flavonoids and carotenoids.

Here's how you can confirm this:
1. Check the ingredients: Look at the packaging or label of the orange juice. You might find additional ingredients listed, such as water or sugar, indicating that it is not purely orange juice.
2. Observe Separation: If you let orange juice sit undisturbed for some time, you may notice that it separates into different layers. This occurs because the heavier components settle at the bottom, indicating the presence of solids or pulp.

Therefore, "pure orange juice" is categorized as a mixture rather than a pure substance because it contains multiple components and can show physical separation. However, it is important to note that different companies or brands may have varying definitions of what they consider as "pure" in their product descriptions.