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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.
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∙ 13y ago
lenpollock
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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Is the reaction between citric acid an sodium endothermic or exothermic?
Endothermic
Contrast endothermic and exothermic reactions?
Endothermic reactions are chemical reactions that use heat as part of the reactant. Heat is absorbed into the reaction in order for it to continue. Exothermic reactions are chemical reactions that release heat as a product of the reaction.
Is the reaction between caesium and water exothermic or endothermic?
This is a strong exothermic reaction.
Is the reaction between potassium permanganate and glycerin a endothermic or exothermic reaction?
Exothermic
When clothes are drying is it an endothermic or an exothermic reaction?
The combustion is exothermic.
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.
How do you distinguish exothermic and endothermic processes?
By whether heat is released or absorbed during the reaction.
Is the reaction between citric acid an sodium endothermic or exothermic?
Endothermic
Contrast endothermic and exothermic reactions?
Endothermic reactions are chemical reactions that use heat as part of the reactant. Heat is absorbed into the reaction in order for it to continue. Exothermic reactions are chemical reactions that release heat as a product of the reaction.
Is the reaction between caesium and water exothermic or endothermic?
This is a strong exothermic reaction.
Is the reaction between potassium permanganate and glycerin a endothermic or exothermic reaction?
Exothermic
When clothes are drying is it an endothermic or an exothermic reaction?
The combustion is exothermic.
Which state changes are exothermic and endothermic?
freezing is exothermic, melting is endothermic, evaporation is endothermic, condensation is exothermic.
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.
Is the reaction between between hydrogen peroxide and yeast an endothermic or exothermic reaction?
endothermic because it absorbs energy, and not releasing it
Is the reaction between zinc and copper sulphate endothermic or exothermic?
exothermicby Arindam
