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Solute and Solvent

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Solute and Solvent

When one substance dissolves into another, a solution is formed.  A solution is a homogeneous mixture consisting of a solute dissolved into a solvent .  The solute is the substance that is being dissolved, while the solvent is the dissolving medium,solvent is in excess compare the solute.  Solutions can be formed with many different types and forms of solutes and solvents.

We know of many types of solutions.  Here are a few examples:

Types of Solutions

Type

Solvent

Solute

Example

gas/gas

nitrogen

oxygen

air

gas/liquid

water

carbon dioxide

soda pop

liquid/liquid

water

ethylene glycol

antifreeze

solid/liquid

water

salts

seawater

We want to focus on solutions where the solvent is water.  An aqueous solution is water that contains one or more dissolved substances.  The dissolved substances in an aqueous solution may be solids, gases, or other liquids.  Some examples are listed in the table above.  

Summary

  • A solution is a homogeneous mixture of a solute in a solvent.
  • A solute is the material present in the smaller amount in the solution.
  • A solvent is the material present in the larger amount in the solution.

Practice

See the video below to answer the following questions:

  1. How does sugar dissolve in water?

Review

  1. What is a solution?
  2. What is the solute?
  3. What is the solvent?
  4. Look at he composition of the air.Why is nitrogen the solvent in air?

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