Question detail
Why is it important for potable water to have low levels of dissolved salts?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Using the Earth's resources and obtaining potable water
Question
Why is it important for potable water to have low levels of dissolved salts?
Answer
Potable water should have low levels of dissolved salts to ensure it is safe for human consumption and does not cause health issues such as dehydration or kidney problems. High salt levels can also affect the taste of the water.
Explanation
A strong answer should directly address the approved learning objective to explain why potable water should have low levels of dissolved salts and microbes. This question belongs to Potable water within Using the Earth's resources and obtaining potable water, so the response should use that exact curriculum context rather than a generic statement. The answer is correct when it names the key idea, explains the link to potable water, and keeps the wording specific to AQA GCSE revision.
Common mistake
Understanding Potable Water
Students often confuse potable water with chemically pure water, thinking both are the same.
Emphasize that potable water is safe to drink and may contain low levels of dissolved salts and microbes, while chemically pure water has no impurities at all.
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