C2 Exothermic and Endothermic
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What is an exothermic reaction?
Reaction that gives out heat energy ( products have less stored energy than reactants )
What happens to the temperature in an exothermic reaction?
Temperature increases (feels warm)
Give an example of an exothermic reaction?
Combustion ( burning) Acids with alkalis Magnesium with acid Respiration
What is an endothermic reaction?
Reactions that takes in heat energy (from the surroundings) ( products have more stored energy than reactants )
What happens to the temperature in an endothermic reaction?
Temperature decreases (feels cold)
Give an example of an endothermic reaction?
Potassium chloride with water Citric acid and sodium hydrogen carbonate ( sherbet ) photo synthesis cooking electrolysis polymerization
What is a reversible reaction?
Reaction can go in both directions Both the forward and reverse reactions can take place
What is the reversible reaction symbol?
