C4 Separation Techniques

What is the difference between filtrate and distillate?

• Filtrate is obtained from physical separation, whereas distillate is obtained from chemical separation.

• Distillate is a pure liquid, whereas filtrate may be an impure liquid

• Filtrate is a liquid, whereas distillate is not a liquid

• Distillation is obtained from a solid-solid mixture, whereas filtrate is obtained from a solid-liquid mixture.

Science WB p39 Q8 (Do in WB too)

Singapore relies on desalination to produce potable water. Which statement(s) about desalination process in SG is/are correct? (Refer to p6 of C4 notes)

I: Salt is removed from seawater

II: Distillation is involved.

III Evaporation is involved.

• A. I

• B. II

• C. I and II

• D. I, II and III

Which of the following key question(s) can determine the appropriate separation methods to separate a substance from a mixture?

• What are the types of the mixtures?

  (e.g. solid-solid, solid-liquid, etc)

• Is one of the substance magnetic?

• Is the liquid in the mixture flammable?

• Is the solid substance soluble or insoluble in the solvent?

During filtration, the insoluble solid that did not pass through the filter paper is known as (a)   .

During distillation, the pure liquid that is collected at the conical flask is known as (a)   .

During paper chromatography, how do we know that 2 dyes are different on the chromatogram?

(a)  

During filtration, the insoluble solids are unable to pass through the filter paper because the insoluble solids were too _____________________________________________________.

Evaporation to dryness used ______________________________ to remove liquid from the solution.

• Solubility

• Heat

• Magnetic attraction

How do we tell the difference between a suspension and a solution in your own words?

Name 2 applications of paper chromatography