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Solutions

The concept of solvent and solute is applicable to solids, liquids, and gasses, so we’re going to take a look at the definition of a solution and what makes up a solution.

First of all, you have the solvent, which is a host substance. When you think of host, you think of something else coming over, and so you think of a solute, which goes into the solvent.

Mini-test: SOLUTIONS 

Question 1: A solution is a mixture that is
A.
B.
C.
D.
Question 2: Which of the following is a solution?
A.
B.
C.
D.

 

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The transcript is provided for your convenience
The solvent is the host substance for the solute, which is a material that can be dissolved in the solvent.

Think about salt and water, water would be the solvent, and the solute would be salt because you can put salt in water and the salt will dissolve in the water and so when you have a solute dissolved in the solvent, it becomes a solution. The solution would just be salty tasting water; there is no longer salt just sitting on the bottom, it’s mixed into the water.

A solution is a mixture with the same composition made of two or more substances, so when you see composition right there, that means it’s one substance. You don’t have salt and water in the glass anymore; you just have salty tasting water. That’s why it says to make sure it’s the same composition, but it’s made of two or more substances, so water and salt together make up the two substances.

Then there’s something called a saturated solution, and that’s a solution with the maximum amount of solute, so at some point, when you’re putting a solute in a solvent the solute will stop being dissolved in the water. You can only put so much in the solvent. A saturated solution is when you put so much solute in the solvent, that if you put anymore solute in the solvent no more of the solute will be dissolved. I hope this is making sense for you.

The saturated solution is at the point where all of the solutes has been dissolved in the solvent, but if you put any more solute in there, that solute would not be dissolved. Then there is also the heterogeneous mixture, and that’s a solution that contains an unequal distribution of solvents in the solution. To review, a solvent is a host substance for the solute, and the solute and the solvent together form the solution. Those are the important points to remember.

Next Lesson: Energy