Year 9 separating mixtures - Chromatography 2025-2026 - Phoenix Hoyle | Library

Instructions

https://www.focuselearning.co.uk/s/27wzak56mghd Simulation

1

Match the separation technique to the diagram.

No notes needed.

Other Answer Choices:

crystallisation

filtration

simple distillation

fractional distillation

1

3

https://docs.google.com/document/d/1lj4RPwF4heTc6Swwzy-FYentSEcY4LqLWZ3qmZrygZU/edit?usp=sharing
 Complete then copy into your book. With the title Method.
Place base of the paper in the ____________ 
Make sure the solvent level is below __________ 
leave until solvent __________is close to the top of the paper.
(i) Describe how the student should complete the experiment after placing the four spots on the paper.
Measure the distance from the pencil line to the solvent line with a  __________ .
Measure the distance from the pencil line to the drop with a __________ 

Other Answer Choices:

solvent

ruler

spots

front

2

Suggest why food colouring F did not move during the experiment.
I will need to look at your answers before you get a mark for this.

1

How many food dyes are there in food colouring E?

1

How many known food dyes are there in food colouring H?

2

Record the results for the dye in G and calculate its Rf value. Give your answer to 2 decimal places.

1

Calculate the Rf values (give your answers to 2 d.p.
Make a quick sketch of the chromatogram
Copy the calculation into your book
Rf value for A = _______ 
Rf value for B = _______ 
B is _______ soluble in the solvent than A as it has travelled further up the paper in the same time.
D is _______ in the solvent used.
To make a chromatogram of D a different solvent such as ethanol or propanone could be used.
Copy the notes into your book

1

Complete the question no notes needed
Blue is _________ 
Green is _________
Yellow is _________ 
Black is a ____________ 
The Rf value of green is _________ 

Other Answer Choices:

mixture

pure

0.80

1.25

insoluble

0.8

2

Tick the colour(s) that include a dye that is not safe

2

Identify the unsafe dyes

5

Explain how the different dyes in X are separated by paper chromatography.
The _________  soluble the dye is in the moving solvent
and the _________ the dye is attracted to the chromatography __________ 
The ____________  the dye moves in the same time.

Other Answer Choices:

paper

more

solvent

further

less

Year 9 separating mixtures - Chromatography 2025-2026

Year 9 separating mixtures - Chromatography 2025-2026

Suggest why food colouring F did not move during the experiment.
I will need to look at your answers before you get a mark for this.

How many food dyes are there in food colouring E?

How many known food dyes are there in food colouring H?

Record the results for the dye in G and calculate its Rf value. Give your answer to 2 decimal places.

Tick the colour(s) that include a dye that is not safe

Identify the unsafe dyes

Which method of separation should be used to obtain sand from a mixture containing salt, sand, and water?
No notes needed.

Which method of separation should be used to obtain pure water from a mixture containing salt, sand, and water?
No notes needed.

Which method of separation should be used to obtain copper(II) sulfate from a mixture containing copper(II) sulfate and water?
No notes needed.

Suggest why food colouring F did not move during the experiment.
I will need to look at your answers before you get a mark for this.

How many food dyes are there in food colouring E?

How many known food dyes are there in food colouring H?

Record the results for the dye in G and calculate its Rf value. Give your answer to 2 decimal places.

Tick the colour(s) that include a dye that is not safe

Identify the unsafe dyes

Year 9 separating mixtures - Chromatography 2025-2026

Year 9 separating mixtures - Chromatography 2025-2026

Suggest why food colouring F did not move during the experiment.I will need to look at your answers before you get a mark for this.

How many food dyes are there in food colouring E?

How many known food dyes are there in food colouring H?

Record the results for the dye in G and calculate its Rf value. Give your answer to 2 decimal places.

Tick the colour(s) that include a dye that is not safe

Identify the unsafe dyes

Which method of separation should be used to obtain sand from a mixture containing salt, sand, and water?No notes needed.

Which method of separation should be used to obtain pure water from a mixture containing salt, sand, and water?No notes needed.

Which method of separation should be used to obtain copper(II) sulfate from a mixture containing copper(II) sulfate and water?No notes needed.

Suggest why food colouring F did not move during the experiment.I will need to look at your answers before you get a mark for this.

How many food dyes are there in food colouring E?

How many known food dyes are there in food colouring H?

Record the results for the dye in G and calculate its Rf value. Give your answer to 2 decimal places.

Tick the colour(s) that include a dye that is not safe

Identify the unsafe dyes

Suggest why food colouring F did not move during the experiment.
I will need to look at your answers before you get a mark for this.

Which method of separation should be used to obtain sand from a mixture containing salt, sand, and water?
No notes needed.

Which method of separation should be used to obtain pure water from a mixture containing salt, sand, and water?
No notes needed.

Which method of separation should be used to obtain copper(II) sulfate from a mixture containing copper(II) sulfate and water?
No notes needed.

Suggest why food colouring F did not move during the experiment.
I will need to look at your answers before you get a mark for this.