Matter-Mixtures and their Separation

What are mixtures?

• When substances are combined without chemically reacting, mixtures are formed.

• In a mixture, each component or part retains its own original properties.

Solutions are mixtures.

In a solution, you observe only one single phase (solid or liquid or gas).

Coffee is a solution.

Lemonade is a mixture.

In a mixture, substances do not react chemically, thus

they can be separated more easily by physical

means.

Evaporate water out!

Pure water

salt

Other examples…Since iron is

magnetic, passing a magnet over the

mixture will pull the magnet out!

Filtration can be used to filter particles out of dirty water.

The recent oil spill in the Gulf has been a challenge for scientists. How do we separate the oil from the water in

an effective way?

Here a clean up crew up scoops up oil from the beach….

The difference between a mixture and

a compound:

Mixtures can easily be separated by physical

means….

Compounds cannot be as easily separated as

substances have chemically combined!

Example: pure H2OExample: candy mixture