GCSE Edexcel Higher Combined Science Chemistry · Topic 4 of 7
Choose a subtopic. Understand reactivity, metal extraction, redox, equilibria, and the Haber process. 33 lessons in 6 subtopics.
Revise Topic 4: Extracting metals and equilibria for GCSE Edexcel Higher Combined Science Chemistry, including Reactivity of metals.
33
Lessons
6
Subtopics
Topic 4: Extracting metals and equilibria has 6 subtopics:
33 lessons, grouped by subtopic.
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Understand reactivity, metal extraction, redox, equilibria, and the Haber process. 33 lessons in 6 subtopics.
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.
The metal reactivity series, from most reactive to least reactive, is potassium, sodium, lithium, calcium, magnesium, aluminium, zinc, iron, copper. The Metal Reactions and the Reactivity Series 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.
NPK fertilisers are formulations of salts containing nitrogen, phosphorus and potassium compounds, used to improve plant growth and agricultural productivity. The NPK fertilisers and their importance notes cover this in full.
A displacement reaction is a reaction where a more reactive element takes the place of a less reactive element in a compound. The Displacement Reactions and the Extended Reactivity Series notes cover this in full.
A redox reaction is one in which oxidation and reduction both occur. The Understanding Oxidation and Reduction with Electrons notes cover this in full.
Rust is iron oxide, formed when iron slowly oxidises in damp air. The Metal Oxides and Oxidation Reactions notes cover this in full.
A metal reacting with a dilute acid produces a salt and hydrogen gas: metal + acid → salt + hydrogen. The Metal Reactions and the Reactivity Series notes cover this in full.