Separating mixtures

If a substance is insoluble in water, it ___________.

• dissolves in water

• cannot dissolve in water

• forms a solution when mixed with water

• cannot be separated from water

Which method is this a picture of?

• Filtration

• Evaporation

• Distillation

• Chromatography

True/False:

Mixtures are combinations of two or more substances.

• True

• False

What tool can be used to separate plastic beads and metal paper clips?

• filter

• magnet

• strainer

• cloth

Tags

NGSS.MS-PS2-3

John wants to separate salt from water. What separation technique should he use?

• evaporation/ crystallisation

• filtration

• decanting

• magnetism

Some students are conducting an experiment with saltwater.  A large quantity of sand was added to the container of saltwater.  What do you expect to observe?

• The salt floats to the top of the container

• The sand dissolves.

• The sand settles to the bottom of the container.

• The salt and sand combine to form a solid.

A kind of mixture in which all the parts are mixed EVENLY?

• energy

• sand and saltwater

• soil

• solution

This method is a technique used in separating a less-dense substance from a denser one.

• decantation

• evaporation

• distillation

• filtration

How do you separate iron filings from sand?

• You can use a filter.
• You can use a fagnet.
• You can use a magnet.
• You can use all of the methods!

What is the process of separating products with densities?

• centrifugation
• chromatography
• heating
• decantation