1 7-Zip-Right-click on the file or folder you want to compress and select 7-Zip â Add to archive. 2  In the Add to Archive menu, you can set your compression options. 3  Note that increasing compression levels can significantly increase the time it takes to compress. 7-Zip-Right-click on the file or folder you want to compress and select 7-Zip â Add to archive. 2  In the Add to Archive menu, you can set your compression options. 3  Note that increasing compression levels can significantly increase the time it takes to compress.
Endothermic reactions are the opposite. The new bonds require more energy. This comes from heating the substances, or sometimes, comes from the surrounding environment. Absorbing heat energy from the environment makes everything decrease in temperature so the reaction 'feels' cooler.
For example combustion is an exothermic reaction in which energy is released in the form of heat. Unlike exothermic reaction, in an endothermic reaction the energy is absorbed in the form of heat.Letâs discuss some other aspects of endothermic reactions with appropriate examples.Chemical reactions that require heat energy are called endothermic reactions.. They become cooler as they progress.or example combustion is an exothermic reaction in which energy is released in the form of heat. Unlike exothermic reaction, in an endothermic reaction the energy is absorbed in the form of heat.