What happens to heat during an exothermic reaction?

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What is the definition of endothermic? What is the definition of exothermic? What is the difference between endothermic and exothermic? What type of reaction do handwarmers use? What is more common an endothermic reaction or an exothermic reaction? How can you calculate the bond energy? Is energy released when bonds are formed or broken? What is activation energy? Where is energy transferred in an exothermic reaction? Where is energy transferred in an endothermic reaction? What are examples of exothermic reactions? What are examples of endothermic reactions? What is an example of an everyday use of an endothermic reaction? What is an example of an everyday use of an exothermic reaction? What is an example of a slow reaction? What is an example of a fast reaction? Are explosions a fast or slow reaction? is rusting a fast or slow reaction? What is collision theory? What things alter the rates of reactions? What is the definition of a catalyst? How do you calculate a reaction rate? How do you find the rate of a reaction from a graph? According to collision theory hat must happen for 2 particles to react? Why does increasing the temperature increase reaction rate? Why does increasing the concentration of solutions increase reaction rate? How can you measure the reaction rate of a precipitation reaction? what is a precipitation reaction? What is a reversible reaction? What is an example of a reversible reaction? What is the equilibrium? What conditions change the position of the equilibrium? What does it mean if the equilibrium is on the left? What does it mean if the equilibrium is on the right? What does it mean if the equilibrium is in the centre? How do endo and exothermic reactions work with reversible reactions? What is Le Chatlier's principle? For a reversible reaction, what is the effect on equilibrium of removing some of the reactants from a reactant mixture? What is the definition of dynamic equilibrium? What does the steep line on a rate of reaction graph show? What does the flat line on a rate of reaction graph show? How does a catalyst work to increase reaction rate? How do you work out the mean rate of reaction? In an exothermic reaction is heat given out or taken in from the surroundings? In an exothermic reaction does the overall energy in the reactants increase or decrease? In a given reaction the beaker heats up, is this an example of an exothermic or an endothermic reaction? When water freezes it turns into ice, is this an example of an exothermic or an endothermic reaction? In an endothermic reaction is heat taken in or given out? The temperature rises by 2 degrees in a reaction, is this reaction endothermic or exothermic? Would performing a reaction in a polystyrene cup reduce or increase the heat lost to the surroundings? In a reaction where bonds are formed, is the reaction exothermic or endothermic? In a reaction where bonds are broken, is the reaction exothermic or endothermic? If the initial energy of the reactants is higher than the final energy in the products, is the reaction exothermic or endothermic? If the energy of the reactants is lower than the energy of the products, is the reaction exothermic or endothermic? If more energy is required to break the bonds in the reactants than to make the bonds in the products, is the reaction exothermic or endothermic? Define activation energy. What happens to heat during an endothermic reaction? Will a double bond between two atoms take more or less energy to break than a single bond between two atoms?