Orange juice regularly features in childhood memories of the breakfast table. But more than that, it also makes cameos in memories of science classes due to the various forms it takes.
Along with the memories, orange juice sometimes conjures up questions. An interesting one is whether orange juice is a solution. I scoured through some notes myself and here’s what I got!
Is Orange Juice A Solution?
Orange juice is considered a solution when it does not contain any solid particles. On the other hand, orange juice with pulp is considered a suspension. Additionally, concentrated orange juice is a colloid because it has a gel-like consistency. In general, orange juice is classified as a mixture because it is made of multiple substances.
If you’re still curious about how different types of orange juice are classified according to their form, then there is only one thing to do. Keep on reading!
Is Orange Juice A Solution Or Mixture?
Orange juice is a solution if it is without pulp.
A solution is a mixture in which the components are in even amounts. There are no floating particles and no separation will take place.
Processed orange juice filtered to remove solid particles or blended thoroughly are considered solutions.
Is Orange Juice A Suspension?
Orange juice is a suspension when it is freshly squeezed and full of pulp.
A suspension is composed of solid particles in the midst of a liquid. Rather than dissolving in the liquid, these particles stay solid and cause a division.
Freshly squeezed orange juice is brimming with pulp and cell membranes. Although these particles seem to blend with the juice at first, that is not the case.
When left to sit even for a short time, the solid particles sink to the bottom. The pulp settles down and shows a noticeable division away from the liquid part.
Settled orange juice temporarily returns to its uniform state when shaken. However, it is inevitable that the pulp will split because it is of a different density than the rest.
Why Is Orange Juice A Mixture?
Orange juice is a mixture because it is not made of a pure single substance. Instead, it is a combination of different elements, including vitamins and minerals, without a fixed ratio. These components combine in different measures.
Is Orange Juice A Colloid?
Yes, orange juice, particularly concentrated orange juice, is a colloid.
Colloids are a type of mixture where two or multiple substances are combined but not enough for them to be inseparable. This mixture is somewhere between a suspension and a solution.
Concentrated orange juice is your typical orange juice that has gone through the pasteurization process to remove bacteria then taken a step further and dehydrated.
Regular orange juice is 90% water but concentrated orange juice has little to no liquid. The result is a gel-like formation.
Is Pulpy Orange Juice A Saturated Solution?
No, orange juice with the pulp intact is not a saturated solution.
Saturated solutions are a combination of liquid and solid particles. These solid particles are mostly dissolved but some sit through the bottom.
The pulp in orange juice does not even dissolve in the liquid portion. As such, it is not a saturated solution but rather a suspension.
Is Orange Juice A Mechanical Mixture?
Freshly-squeezed orange juice is a mechanical mixture.
A mechanical mixture is something that can be separated through physical means. One component of it should be large and solid enough to be filtered.
Since the pulp in freshly squeezed orange juice does not mix with the liquid portion, you can definitely filter it out.
On the other hand, store-bought orange juice is not considered a mechanical mixture because the particles are completely merged with one another.
This is because most store-bought juice in the market is homogenized so the particles combine smoothly.
If you want to learn more about orange juice, you can see our related posts on why we drink orange juice in the morning, how to make orange juice without a juicer, and how long fresh-squeezed orange juice lasts.
Orange juice with its pulp filtered is a solution because the components of it are combined in a uniform manner. Unfiltered orange juice with its pulp and other solid particles intact is a suspension.
On the other hand, concentrated orange juice is a colloid because it is viscous and has a semi-liquid form that can act as a solid.
Moreover, freshly squeezed orange juice is a mechanical mixture because you can separate the pulp from the liquid using physical means. However, store-bought orange juice is not under this category as it has undergone homogenization.