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Separating Substances: Step-by-Step 1

In this worksheet, students will be helped to decide how to organise the separating of different substances into the correct order for it to work properly, requiring them to draw on past experience and to look ahead before making decisions.

'Separating Substances: Step-by-Step 1' worksheet

Key stage:  KS 2

Curriculum topic:  Properties and Changes of Materials

Curriculum subtopic:  Separating Mixtures

Difficulty level:  

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Worksheet Overview

QUESTION 1 of 10

In Science, when things are separated from each other, the order that you do the steps in is very important, otherwise the experiment won't work properly.

 

This worksheet gives you the chance to try this out without making a mess in real life, so you can always go back and try again!

Jessica and Erin's science teacher has set them a problem to solve. They have been given a mixture of sand, iron filings and sugar and their teacher has asked them what they would do to separate the three substances.

 

Here are eight pictures showing the stages in their experiment. Look carefully at each picture and decide which letter represents the starting point for their experiment and choose that letter in the answers below. Then move on to the next question for the next step in the operation.

 

 

So choose the letter for their starting point:

A

B

C

D

E

F

G

H

Jessica and Erin's science teacher has set them a problem to solve. They have been given a mixture of sand, iron filings and sugar and their teacher has asked them what they would do to separate the three substances.

 

Here are eight pictures showing the stages in their experiment. Look carefully at each picture and decide which letter represents second stage in their separation operation:

 

A

B

C

D

E

F

G

H

Jessica and Erin's science teacher has set them a problem to solve. They have been given a mixture of sand, iron filings and sugar and their teacher has asked them what they would do to separate the three substances.

 

Here are eight pictures showing the stages in their experiment. Look carefully at each picture and decide which letter represents the third thing they'd do in their separation operation:

 

A

B

C

D

E

F

G

H

Jessica and Erin's science teacher has set them a problem to solve. They have been given a mixture of sand, iron filings and sugar and their teacher has asked them what they would do to separate the three substances.

 

Here are eight pictures showing the stages in their experiment. Look carefully at each picture and decide which letter represents the fourth separation operation:

 

A

B

C

D

E

F

G

H

Jessica and Erin's science teacher has set them a problem to solve. They have been given a mixture of sand, iron filings and sugar and their teacher has asked them what they would do to separate the three substances.

 

Here are eight pictures showing the stages in their experiment. Look carefully at each picture and decide which letter represents the next - the fifth - stage in their separation operation:

 

A

B

C

D

E

F

G

H

Jessica and Erin's science teacher has set them a problem to solve. They have been given a mixture of sand, iron filings and sugar and their teacher has asked them what they would do to separate the three substances.

 

Here are eight pictures showing the stages in their experiment. Look carefully at each picture and decide which letter represents the sixth stage in their separation operation:

 

A

B

C

D

E

F

G

H

Jessica and Erin's science teacher has set them a problem to solve. They have been given a mixture of sand, iron filings and sugar and their teacher has asked them what they would do to separate the three substances.

 

Here are eight pictures showing the stages in their experiment. Look carefully at each picture and decide which letter represents the next stage in their separation operation - the seventh stage:

 

A

B

C

D

E

F

G

H

Jessica and Erin's science teacher has set them a problem to solve. They have been given a mixture of sand, iron filings and sugar and their teacher has asked them what they would do to separate the three substances.

 

Here are eight pictures showing the stages in their experiment. Look carefully at each picture and decide which letter represents the final stage in their separation operation:

 

A

B

C

D

E

F

G

H

  • Question 1

Jessica and Erin's science teacher has set them a problem to solve. They have been given a mixture of sand, iron filings and sugar and their teacher has asked them what they would do to separate the three substances.

 

Here are eight pictures showing the stages in their experiment. Look carefully at each picture and decide which letter represents the starting point for their experiment and choose that letter in the answers below. Then move on to the next question for the next step in the operation.

 

 

So choose the letter for their starting point:

CORRECT ANSWER
A
EDDIE SAYS
OK, so an easy start: it's the sand, iron filings and sugar mixture their teacher gave them. Things may get a little trickier soon!
  • Question 2

Jessica and Erin's science teacher has set them a problem to solve. They have been given a mixture of sand, iron filings and sugar and their teacher has asked them what they would do to separate the three substances.

 

Here are eight pictures showing the stages in their experiment. Look carefully at each picture and decide which letter represents second stage in their separation operation:

 

CORRECT ANSWER
D
EDDIE SAYS
The second thing they'd do is to use a magnet to separate out all the iron filings; iron is attracted to a magnet.
  • Question 3

Jessica and Erin's science teacher has set them a problem to solve. They have been given a mixture of sand, iron filings and sugar and their teacher has asked them what they would do to separate the three substances.

 

Here are eight pictures showing the stages in their experiment. Look carefully at each picture and decide which letter represents the third thing they'd do in their separation operation:

 

CORRECT ANSWER
F
EDDIE SAYS
Next they'd add some water to the remaining sand/sugar mixture (hoping to dissolve the sugar in the water).
  • Question 4

Jessica and Erin's science teacher has set them a problem to solve. They have been given a mixture of sand, iron filings and sugar and their teacher has asked them what they would do to separate the three substances.

 

Here are eight pictures showing the stages in their experiment. Look carefully at each picture and decide which letter represents the fourth separation operation:

 

CORRECT ANSWER
G
EDDIE SAYS
Having stirred it, Jessica and Erin would hope that all the sugar would dissolve in the water as the sand certainly won't!
  • Question 5

Jessica and Erin's science teacher has set them a problem to solve. They have been given a mixture of sand, iron filings and sugar and their teacher has asked them what they would do to separate the three substances.

 

Here are eight pictures showing the stages in their experiment. Look carefully at each picture and decide which letter represents the next - the fifth - stage in their separation operation:

 

CORRECT ANSWER
B
EDDIE SAYS
Now that the sugar's dissolved in the water it's time to separate it from the sand - filtering will do this. The sand should get left in the filter paper.
  • Question 6

Jessica and Erin's science teacher has set them a problem to solve. They have been given a mixture of sand, iron filings and sugar and their teacher has asked them what they would do to separate the three substances.

 

Here are eight pictures showing the stages in their experiment. Look carefully at each picture and decide which letter represents the sixth stage in their separation operation:

 

CORRECT ANSWER
H
EDDIE SAYS
Once the sand/sugar/water mixture is in the filter the sugary water starts to drip through: the sugar is now in tiny particles mixed in with the water and can pass through the tiny holes in the filter paper. The grains of sand are too big to pass through and get stuck. A filter is like a very fine sieve. The sand and sugar have now been separated.
  • Question 7

Jessica and Erin's science teacher has set them a problem to solve. They have been given a mixture of sand, iron filings and sugar and their teacher has asked them what they would do to separate the three substances.

 

Here are eight pictures showing the stages in their experiment. Look carefully at each picture and decide which letter represents the next stage in their separation operation - the seventh stage:

 

CORRECT ANSWER
C
EDDIE SAYS
Now it's time to try to get the sugar back out of the water (the sugar solution) - it's quite tricky and needs gentle heating to evaporate the water away without burning the sugar. Alternatively, Jessica and Erin could have left the dish of sugar solution on the windowsill to slowly evaporate away, but like all scientists they're keen to see the results of their experiment!
  • Question 8

Jessica and Erin's science teacher has set them a problem to solve. They have been given a mixture of sand, iron filings and sugar and their teacher has asked them what they would do to separate the three substances.

 

Here are eight pictures showing the stages in their experiment. Look carefully at each picture and decide which letter represents the final stage in their separation operation:

 

CORRECT ANSWER
E
EDDIE SAYS
That's it! They've finished! All being well, Jessica and Erin will have seen the last of the water slowly evaporate away leaving them with some white crystals of sugar. Hooray!
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