Substances, Mixtures, and Solutions


10 Questions

90 Seconds

90% to Pass

Register to view full lesson

You'll also get unlimited access to all the lessons in Math, English, Science, and more as a member. Plus, get practice tests, quizzes, and the progress tracker to view progress and achievements.

Create Your Account
Something that can't be broken down into simpler parts and physical changes that won't alter its composition is called a substance.
A substance is made of a single compound.

Example: Water (H2O) - Water is a substance. Water will remain H2O no matter what physical process we put water through (Freezing or boiling).
Different substances mixed together and with no possibility to be chemically bonded are called a mixture.

Example: Salad - A salad is a mixture of different things like oil, herbs, and lemon juice.
There are two kinds of mixtures: Heterogeneous mixture and Homogenous mixture.
A mixture that the substances do not evenly mix called a heterogeneous mixture

Example - Salad - No matter how many times you mix the salad, every bit of salads different.
A mixture that the molecules of each substance are equally mixed and that we can't see the different parts of the mixture is called homogenous mixture.

Example - Suger dissolves in water and creates a homogenous mixture that we can't see the sugar and the water. It is just a liquid that mixed both molecules.
Homogenous mixtures are also called solutions.
A solution is made of solute and a solvent.
A solution is made of solute and a solvent.
Solute: The substance that gets dissolved is called the solute.
Solvent: The substance that dissolves the solute called the solvent.

Example: When making a cup of tea, milk, coffee and sugar are solutes, and water is solvent.
Solubility is the ability of a substance to dissolve in another substance.
Temperature, gas, pressure, and concentration affect solubility.
Temperature, gas, pressure, and concentration affect solubility.

Example: Solid solutes are more soluble in water at higher temperatures. (Suger easily dissolves in hot water.)
Gases are more soluble in liquid at colder temperatures.

Example: Carbonated beverages remain fizzy longer when they are cold.
Concentration is the amount of solute contained in a solution.
A concentrated solution has a lot of solutes. The diluted solution has very little solute

Example: Concentrated lemon drink solution would be really sour and sweet, and a diluted solution would taste watery.
The side of a fruit juice box will usually tell us the concentration of fruit juice. If the concentration of fruit in a fruit punch is 7 percent, that means 7 percent of the drink is made of juice, and the rest is stuff like water and sugar.

Check Your Knowledge

Start Quiz