Separation of Mixtures

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Magnetism

A magnet is used to separate magnetic materials from those that are not magnetic.

Evaporation

A mixture is heated unit the water changes from a liquid to a gas. The water vapor can be collected and condensed back into liquid form. The remaining substance has then been separated from the water.

Sifting or Filtering

A mixture is passed through a screen that operates large particles. The smaller particles pass through while the larger particles are collected on the screen.

Weight

A mixture of lead and aluminum pellets

Evaporation & weight

A mixture of oil and water

Weight

A mixture of red blood cells and plasma

Magnetism

A mixture of salt and iron filings

Sifting and filtering

A mixture of sand and gravel

Evaporation

A mixture of sugar and water

Weight

A special machine called a centrifuge spins a mixture to separate substances with different masses. The heavier substances is forced to the bottom and the liquid is siphoned off.


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