Mixture

What is a mixture?

• elements chemically combined

• a combination of different substances

• composed of one atom only

• it is made of chemical

Sand floating in water, but most of the sand is settled at the bottom this an example of which type of mixture?

• A solution
• A colloid
• A suspension
• A compound

Which statement below does NOT describe a colloid?

• A colloid is a type of heterogeneous mixture

• A colloid is a type of solution.

• The particles in a colloid do not settle like they do in a suspension.

• The particles in a colloid do not dissolve – they are just too small to be seen.

How are suspensions and colloids different?

• Suspensions settle out and colloids do not settle.

• Colloids settle out and suspensions do not settle.

• Suspensions dissolve and colloids do not.

• Colloids dissolve and suspensions do not.

_______ is a mixture in which particles will settle out.

• suspension

• colloid

• compound

• solvent

The air around is a mixture of gases.

• True

• False

When two or more substances are combined so each can be separated by physical means, the result is a(n) _____.

• chemical change

• compounds

• mixture

• element

This is a mixture of two or more substances in which one or more of these substances (solutes) is dissolved in another substance.

• compound

• element

• solution

• heterogeneous mixture

When there is a change from a solid to part of a solution when placed into a solvent

• dissolve
• rain
• solution
• diffusion

A type of mixture that always looks cloudy because clumps of insoluble particles remain suspended throughout it - they do not settle as sediments after a period of time

• colloid
• sedimentation
• suspended
• crystallisation