1a3 marks
Different mixtures can be separated using different methods.
Draw a line from each separation process to the apparatus used.
Use only one line for each process.
1b1 mark
A student is given a mixture of iron filings and sulfur powder.
Suggest a method that he could use to separate the iron and sulfur.
1c2 marks
The student heated the mixture to form solid iron sulfide. This is an example of a chemical change.
Write down two ways the student will know a chemical reaction has taken place.
1 ......................................................
2 ......................................................
1d3 marks
i)
The particle model shows how particles are arranged and how they move in solids, liquids and gases.
Describe how the particles are arranged in a solid.
[2]
ii)
Describe how the particles move in a solid.
[1]
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