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Endothermic reactions are reactions that create bonds between atoms, which means they require energy, so they take heat energy from its surroundings to create the bonds (meaning the reaction produces "cold"), and exothermic reactions are ones which break bonds between atoms, giving off energy and thus heat.
An exothermic reaction releases heat to its surroundings, resulting in a temperature increase. On the other hand, an endothermic reaction absorbs heat from its surroundings, causing a temperature decrease.
The words 'Endothermic ' and 'Exothermic' come from Classical Greece,
The moiety ; thermic; means heat.
The prefixes 'Exo ' means 'out of' and 'Endo' means ' in to'.
So for an Endothermic reaction it means 'heat is going in to'' in order to break the bonds.
For an Exothermic reaction in means 'heat is coming out' in order to form bonds.
As an example, when calcium carbonate is heated, heat is being driven in, in order to break bonds to form calcium oxide and carbon dioxide. So it is an ENDOTHERMIC reaction. The heat that you may feel from the Bunsen burner is 'waste' heat because it is not going in to break the bond, but some heat is going in!!!
Conversely, the neutralisation of HCl and NaOH. You mix the two together, without heating , yet the beaker feels warm. This is an EXOTHERMIC reaction as energy is released as the water bonds form.
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Contrast endothermic and exothermic reactions?
Endothermic reactions absorb heat energy from their surroundings, causing a decrease in temperature, while exothermic reactions release heat energy into their surroundings, causing an increase in temperature. Endothermic reactions require an input of energy to proceed, whereas exothermic reactions release energy as a byproduct of the reaction.
Is the reaction between zinc and copper sulphate endothermic or exothermic?
The reaction between zinc and copper sulfate is exothermic, as heat is released during the reaction.
What is the opposite of endothermic?
The opposite of endothermic is exothermic. Exothermic reactions release energy in the form of heat to the surroundings, while endothermic reactions absorb energy from the surroundings.
Which state changes are exothermic and endothermic?
Exothermic state changes release heat energy to the surroundings, such as freezing and condensation. Endothermic state changes absorb heat energy from the surroundings, like melting and vaporization.
Is vaporization exothermic or endothermic?
Vaporization is an endothermic process because it requires energy input to break the intermolecular forces between molecules and convert them from a liquid to a gas phase.
What is the different between endothermic and endothermic?
The difference between endothermic and exothermic energy is that exothermic energy is the reaction that releases energy and endothermic is the reaction in ehich energy is absorbed.
Is the reaction between HF and NaOH an endothermic or exothermic reaction?
EXTREMELY!!!!! exothermic. As in fires and explosions exothermic.
Is freeezing endothermic or exothermic?
Freezing is exothermic, as the substance that is freezing loses energy to its surroundings.
Contrast endothermic and exothermic reactions?
Endothermic reactions absorb heat energy from their surroundings, causing a decrease in temperature, while exothermic reactions release heat energy into their surroundings, causing an increase in temperature. Endothermic reactions require an input of energy to proceed, whereas exothermic reactions release energy as a byproduct of the reaction.
Is the reaction between zinc and copper sulphate endothermic or exothermic?
The reaction between zinc and copper sulfate is exothermic, as heat is released during the reaction.
What is the opposite of exothermic?
The opposite of exothermic is endothermic. Exothermic reactions are those which give off energy in the form of heat. Endothermic reactions require energy.
Is transpiration exothermic or endothermic?
endothermic
Is sublimation a exothermic or endothermic?
endothermic
Is saponification exothermic or endothermic?
it is an endothermic
Is an explosion an exothermic or endothermic?
Exothermic
Is electrolysis exothermic or endothermic?
exothermic
Is bonding endothermic or exothermic?
exothermic
