Mixtures - Basic Learning

Mixtures

Mixtures

There are a variety of mixtures you can make, and find. In this lesson, we will be learning about different kinds of mixtures.  Titles included: - Soluble and insoluble - Solution - Solvent and solute - Pure and impure substances

Soluble and Insoluble

Soluble: A soluble substance is a substance that can dissolve in a liquid. Example sugar can dissolve in water. Salt can dissolve in water, and other powders or substances can dissolve in a liquid.  Nail polish is also soluble to nail polish remover, because it dissolves when you add some to your nails while taking the nail polish off. Summarise: Soluble substances can dissolve in a liquid.

Insoluble: Insoluble substances are the opposite to soluble substances. Take a guess... Insoluble substances cannot dissolve in water. Example, oil can't dissolve in water, in fact, it sits lightly at the top of the container. Sand cannot dissolve in water, it may disappear for a while, but once it settles, all the sand drops back down to the bottom of the container. Summarise: Insoluble substances cannot dissolve in a liquid.        

Solution

In the last slide, we learnt about soluble and insoluble substances. A solution is made when a soluble substance (A substance that dissolves in a liquid) dissolves in a liquid. This forms a solution. The solution can be used for many different terms. An example is coffee. Coffee powder is put into hot water, once the coffee dissolves, it makes black coffee, or any coffee you had just made. Another example of a solution is sugar water. You make sugar water by adding sugar to some water, this then makes it sugar water. Summarise; A solution is made when a soluble substance dissolves in a liquid.

Solvent and Solute

Solvent: A solvent is the liquid that the substance gets dissolved in. Example sugar is added into some water. Water is the solvent because a substance is being added to be dissolved in the water. Summarise: A solvent is the liquid that dissolves a substance.

Solute: A solute is the substance that is being dissolved in the liquid (solvent). Example sugar is added into some water. Sugar is the solute because it is the substance that is being added into the water (solvent) to be dissolved in. Summarise: Solute is the substance that is being dissolved into the liquid.

Pure and Impure substances

Pure substance: A pure substance is a substance that only has one type of particle. An example is gold. Gold only has one particle. Summarise: A pure substance only has one particle.

Impure substance: An impure substance has many particles. An example is a cake. A cake has more than one particle, because it was made with a mixture of egg, flour, butter, etc.  Summarise: An impure substance has more than one particle