Jaisul Naik

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A-Level Economics Paper 1

Market failure 1. negative externalities in production 1. chain of reasoning 2. diagram 3. example 2. negative externalities in production 1. chain of reasoning 2. diagram 3. example 3. negative externalities in production
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GCSE Science | Chemical Analysis

Pure substance * Single element or compound * Not mixed with any other substances How to test for purity * Pure substances melt and boil at fixed temperatures * Use melting and boiling point data to distinguish
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GCSE Science | Radioactivity

Radiation * this happens when a nucleus is unstable Alpha radiation * made up of 2 protons and 2 neutrons * mass number: 4 * proton number: 2 * hint: same as Helium Beta radiation * losing an electron