Howden School and Technology College

7H Solutions

How much salt is there in rock salt?

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Objective

• To calculate and conclude which rock salt sample contains the most salt.

Howden School and Technology College

Obtaining your evidence

Level

In my experiment, I can .......

3 use simple equipment to make measurements e.g. length and mass

make basic observations

4 make enough measurements and/or observations for the investigation

5 make a series of measurements and/or observations that are accurate

spot that a result is “odd” and repeat the experiment

Howden School and Technology College

Getting salt from rock salt

DissolveFilter Evaporate

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How much salt?

Percentage of salt obtained

Mass of pure salt

Mass of rock salt used= X 100

Weigh the rock salt at the start of the experiment

Weigh the salt at the end of the experiment

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Level In my conclusion, I can .......

3 give some explanation for the patterns and observations

4 use scientific language to: explain the patterns shown in my graphsuse the patterns in my graphs to draw conclusionslink the conclusion to my prediction

5 use knowledge and understanding of level 5 science to :explain the patterns shown in my graphsuse these patterns and any other results to draw conclusions

Making a conclusion

Howden School and Technology College

Which sample had the most salt?