Sublimation and filtration

To separate a mixture of soil and water what separation method is used?

• Filtration
• Distillation
• Chromatography
• Evaporation

Sodium chloride can be separated from rock salt by first adding water to the mixture to dissolve the sodium chloride. The separation then takes place in two stages:

• evaporation followed by filtration
•  distillation followed by decanting
• filtration followed by evaporation
• filtration followed by decanting

The diagram shows the apparatus for separating soil and water. What are the labelled parts?

• A = residue, B = distillate
•  A = residue, B = filtrate
• A = filtrate, B = residue
• A = distillate, B = filtrate

In a coffee machine, the ground coffee is separated from the coffee solution by using..

• sand paper

• filter paper

• toilet paper

• tissue paper

When a solid turn into a gas or a gas is turned directly into a solid is called...

• Freezing

• Sublimation

• Evaporation

• Melting

Which chemical substance does not sublimes?

• Iodine

• Ammonium chloride

• Hot ice or solid carbon dioxide

• Carbon monoxide

What separating technique will you use to separate ammonium chloride and sand?

• Filtration

• A bar magnet

• Evaporation

• Sublimation