Methods of Purification

Front

What is fractional distillation?

Back

A separation technique used to separate mixtures of liquids with different boiling points.

Front

Why can water and ethanol be separated by fractional distillation?

Back

Because they have different boiling points.

Front

What is solubility?

Back

The ability of a substance to dissolve in a solvent, such as water.

Front

Which solid is insoluble in water: sugar, copper sulfate, sand, or salt?

Back

Sand.

Front

What is a bar magnet used for in separation techniques?

Back

To separate magnetic materials, such as iron filings, from non-magnetic materials, like sand.

Front

What is chromatography?

Back

A method used to separate mixtures based on the different rates at which components move through a medium.

Front

How can dyes in water-soluble markers be separated?

Back

By using chromatography.

Front

What is filtration?

Back

A separation technique used to separate solids from liquids by passing the mixture through a filter.

Front

What method would you use to separate a mixture of soil and water?

Back

Filtration.

Front

What is distillation?

Back

A process used to separate components of a liquid mixture based on differences in boiling points.