Food Chemistry

The diagram shows liquid in a measuring cylinder.

What is the volume of the liquid?

• 41.3 cm3

• 41.4 cm3

• 41.6 cm3

• 44.0 cm3

Which measuring instrument is used to determine the volume of an irregular solid?

• electronic balance

• measuring cylinder

• measuring tape

• millimetre ruler

The diagram shows a measuring cylinder used to measure the volume of a small stone.

What is the volume of the stone?

• 4 cm3

• 8 cm3

• 18 cm3

• 26 cm3

The diagram shows the results of a paper chromatography experiment carried out on a sample of food and four dyes.

Which dyes do the food contain?

• 1 and 2

• 1 and 3

• 2 and 4

• 3 and 4

A glass jar containing sugar is accidentally dropped onto the floor. The glass breaks into small pieces.

How could the glass and sugar be separated?

• by distilling the sugar

• by dissolving followed by filtering

• by evaporating the glass

• by filtering followed by dissolving

• A

• B

• C

• D

Food colourings are often a mixture of coloured dyes.

Which method can be used to separate the different dyes in a food colouring?

• chromatography

• heating

• evaporation

• filtration

A student wants to separate water from seawater.

She uses the apparatus shown to separate the water from the seawater.

Which method of separation is she using?

• dissolving

• distillation

• filtration

• paper chromatography

The diagram shows a bottle of sunflower oil and the seeds the oil came from.

The sunflower oil can be removed from the seeds by dissolving the oil in a chemical called hexane.

Which method can be used to separate the sunflower oil from the hexane?

• burning

• distillation

• filtration

• paper chromatography

The diagram shows how copper sulfate crystals are formed by heating copper sulfate solution.

Which method is being used?

• dissolving

• distillation

• evaporation

• filtration