Note: In the energy level diagrams, the electrons are spread out evenly in the level. ... The answer to this is far beyond the scope of a middle school chemistry unit. It involves thinking of ...

Free interactive and download to print GCSE Chemistry ... energy, endothermic, thermal decomposition, exothermic, combustion, oxidation, neutralisation, reaction profile, energy level diagram ...

Free interactive and download to print GCSE Chemistry flashcards to help prepare for your GCSE exams. Revise topics such as exothermic and endothermic reactions and chemical cells.