This is a low ability KS3 lesson, with the theme of Disney's Frozen.
Pupils begin with a "Think, Pair and Share" of how they will obtain fresh water from salt water on a beach.
They then go onto do the rock salt experiment, creating a solution and then separating the salt and water, for higher ability classes get them to capture the fresh water, rather than letting it evaporate.
Pupils then go onto a chromatography practical. Use a number of different green pens (one being the sample) and get pupils to determine which green pen was used in a scenario. You could also demo distillation of ink.
Pupils finally complete the "Purifying a Solid" clue task to revisit key terms.
There is also an extended writing homework available.
Pupils begin with a "Think, Pair and Share" of how they will obtain fresh water from salt water on a beach.
They then go onto do the rock salt experiment, creating a solution and then separating the salt and water, for higher ability classes get them to capture the fresh water, rather than letting it evaporate.
Pupils then go onto a chromatography practical. Use a number of different green pens (one being the sample) and get pupils to determine which green pen was used in a scenario. You could also demo distillation of ink.
Pupils finally complete the "Purifying a Solid" clue task to revisit key terms.
There is also an extended writing homework available.
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