Separating mixtures

This method separates dissolved substances based on differences in how well they dissolve in a solvent.

• Filtration

• Evaporation

• Distillation

• Chromatography

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/condensation

• filtration

• decanting

• magnetism

Tags

NGSS.MS-PS1-4

Grade 4 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

Which environmental problems can be separated by physical manipulation?

• garbage in the landfill

• flood

• global warming

• contaminated rivers and lakes