Using resources

Making water potable and the water practical, life cycle assessments and recycling, phytomining and bioleaching, corrosion and materials, and the Haber process with NPK fertilisers, with every calculation worked.

Start with Potable water, waste water and the water practical. In 30 minutes you will be able to explain the difference between pure and potable water. 2 of the 5 lessons here are free.

Lessons

Practise and test

Question bank49 exam-style question types with mark schemes and worked solutions. 21 are free.
Topic test14 questions, 42 marks, 50 minutes, marked with an estimated grade. Plus.

By the end you can

Explain the difference between pure and potable water and describe how fresh water, sea water and sewage are treated
Carry out the water analysis practical and find the mass of dissolved solids per dm³
Compare products with life cycle data and calculate the energy and ore saved by recycling
Describe phytomining and bioleaching and calculate the masses involved (Higher)
Explain corrosion protection, work with carats and alloy recipes, and choose materials from data (Chemistry only)
Describe the Haber process, calculate yields and compare fertilisers by their nitrogen (Chemistry only)

Specifications

AQA 8462 (Chemistry) 4.10 (4.10.1.4 Higher; 4.10.3 and 4.10.4 Chemistry only)
AQA 8464 (Combined Trilogy) 5.10.1 and 5.10.2
Pearson Edexcel 1CH0 and 1SC0 Topics 2 and 4 (1CH0 also Topics 5 and 9)
OCR Gateway J248 and J250 C6.1, with potable water in C6.3 (J250: C6.1 and C6.2)

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