GCSE AQA Higher Combined Science Chemistry · Topic 10 of 11
Choose a subtopic. Topic 10: Using resources covers Using the Earth's resources and obtaining potable water, Life cycle assessment and recycling, Using materials (chemistry only), and The Haber process and the use of NPK fertilisers (chemistry only) in GCSE AQA Higher Combined Science Chemistry. 14 lessons in 4 subtopics.
Revise Topic 10: Using resources for GCSE AQA Higher Combined Science Chemistry, including Using the Earth's resources and obtaining potable water.
14
Lessons
4
Subtopics
Topic 10: Using resources has 4 subtopics:
14 lessons, grouped by subtopic.
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Topic 10: Using resources covers Using the Earth's resources and obtaining potable water, Life cycle assessment and recycling, Using materials (chemistry only), and The Haber process and the use of NPK fertilisers (chemistry only) in GCSE AQA Higher Combined Science Chemistry. 14 lessons in 4 subtopics.
Percentage change = (new value - old value) ÷ old value × 100. The Data Analysis and Sustainable Development notes cover this in full.
The three Rs are reduce, reuse and recycle, and the hierarchy matters: reduce first, then reuse, then recycle. The Evaluating Resource Reduction Strategies notes cover this in full.
Aluminium melts at 660°C, much lower than iron at 1538°C. The Recycling in Practice: Glass and Metals notes cover this in full.
Reverse osmosis is a desalination method that uses high pressure to force water molecules through a semi-permeable membrane, which blocks salt ions. The Water Treatment for Different Sources notes cover this in full.
Potable water is water that is safe to drink, with sufficiently low levels of dissolved salts and microbes. The What is Potable Water and How Do We Make It? notes cover this in full.
Sustainable development is about balancing present needs with the long-term availability of resources. The Earth's Resources and Human Needs notes cover this in full.
A circular economy is a system where waste becomes input for other processes. The Evaluating Resource Reduction Strategies notes cover this in full.
Bioleaching uses bacteria to break down low-grade metal ores, such as copper sulfide, producing a leachate solution containing dissolved metal compounds. The Why We Need New Methods to Extract Metals notes cover this in full.