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A Coggle Diagram about Salts and electrolysis, Structure and bonding (Gigant covalent: , Giant metallic, Covalent, giant ionic structure, Ionic, Nanoscience, Polymers and Metallic : ), Rates and energy (The effect of a catalyst, Endothermic and exothermic reactions, The effect of temperature, Collision theory and SA, Concentration or pressure:, How fast?, In reversible reactions , the forward and reverse reactions involve equal but opposite energy transfers, therefore if one reaction is endothermic in one way, it will be exothermic in the other and Exothermic reactions can be used to heat things, hand warmers and self-heating cans are some examples of this, some of them are reversible such as crystallisation reactions in salts.
Endothermic reactions can be used to cool things, for example in aluminum nitrate the water is kept separate and when mixed together the aluminum dissolves in water taking energy from the surroundings) and How much? (Mass, Analysing and Reversible reactions. )