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Separation Techniques and Mixtures Quiz

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Questions and Answers

What is the key characteristic that distinguishes suspensions from colloids?

Suspensions scatter light while colloids do not.

Colloids are always soluble in solvents.

Particle size is visible to the naked eye in suspensions. (correct)

Particle size is too small to be seen in colloids.

Which term best describes a mixture where the particles are evenly distributed and do not settle out over time?

Solution (correct)

Suspension

Colloid

Solute

What is the dispersed phase in a colloid?

The particles that are too small to be seen. (correct)

The particles that scatter light.

The visible particles in the mixture.

The medium in which the particles are distributed.

Which type of mixture shows the properties of its constituting elements or compounds?

Homogeneous mixture Signup and view all the answers

What distinguishes a compound from a mixture?

Compound properties are different from its elements. Signup and view all the answers

Which separation technique would be most appropriate for separating sodium chloride from water?

Evaporation Signup and view all the answers

How can you separate small pieces of metal from engine oil in a car?

Filtration Signup and view all the answers

What property of colloids allows them to scatter light but not settle out over time?

Small particle size Signup and view all the answers

What defines a saturated solution?

A solution where no more solute can dissolve at a given temperature. Signup and view all the answers

How can you separate different pigments from an extract of flower petals?

Chromatography Signup and view all the answers