第 1 题
1 分Which of the following is defined as water that is safe for humans to drink?
AQA GCSE · Chemistry 8462
Using the Earth's resources and obtaining potable water：练习题
5 道选择题即时批改，另有 1 道文字题附完整解题步骤，全部围绕「Using the Earth's resources and obtaining potable water」。
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第 2 题
1 分Sewage treatment involves several stages. Which stage specifically involves the use of anaerobic digestion?
第 3 题
1 分Phytomining is an alternative method for extracting copper. How is the copper eventually obtained from the plants used in this process?
第 4 题
1 分Which of these is an example of a finite resource?
第 5 题
1 分A student is investigating a water sample. They find that when the water is evaporated, a white solid remains. What does this result prove about the water sample?
第 6 题
6 分In the UK, potable water is often produced from fresh water sources.
Identify the three main stages in this process and explain why each stage is necessary to make the water safe for human consumption.
先自己写一遍答案，再对照解题步骤。
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