Extraction Refinement Revision

Something that contains only one type of substance is called a............

• pure substance
• mixture
• solution
• combination

Which separation technique should be used to separate a soluble substance from a solvent?

• Chromatography
• Fractional distillation
• Evaporation
• Filtration

Which separating technique is the best way to separate sugar from a sugar solution?

• Chromatography
• Evaporation
• Distillation
• Filtration

Which separating technique is the best way to separate different coloured pigments in an ink?

• Chromatography
• Evaporation
• Distillation
• Filtration

Which separating technique is the best way to separate mud from a mixture of muddy water?

• Chromatography
• Evaporation
• Distillation
• Filtration

Which separating technique is the best way to separate water from ink and water?

• Chromatography
• Evaporation
• Distillation
• Filtration

Which of the following is the pH of an acid?

• 2.5

• 7.0
• 9.4

• 11.6

What pH would a weak alkali be?

• 5
• 8
• 7
• 1
• 13

What pH would a strong alkali be?

• 4

• 9

• 7
• 2

• 14

What pH would a weak acid be?

• 6

• 9

• 7
• 2

• 14