{"id":22536,"date":"2024-07-17T08:16:17","date_gmt":"2024-07-17T06:16:17","guid":{"rendered":"https:\/\/www.linseis.com\/endothermic-vs-exothermic-reactions\/"},"modified":"2024-08-12T11:55:20","modified_gmt":"2024-08-12T09:55:20","slug":"endothermic-vs-exothermic-reactions","status":"publish","type":"post","link":"https:\/\/www.linseis.com\/en\/wiki\/endothermic-vs-exothermic-reactions\/","title":{"rendered":"Endothermic vs. exothermic reactions"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"22536\" class=\"elementor elementor-22536 elementor-8417\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9eb8745 e-flex e-con-boxed e-con e-parent\" data-id=\"9eb8745\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a3559ab elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"a3559ab\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;headings_by_tags&quot;:[&quot;h2&quot;],&quot;exclude_headings_by_selector&quot;:[],&quot;marker_view&quot;:&quot;numbers&quot;,&quot;no_headings_message&quot;:&quot;No headings were found on this page.&quot;,&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;hierarchical_view&quot;:&quot;yes&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t\t\t\t<h4 class=\"elementor-toc__header-title\">\n\t\t\t\tTable of Contents\t\t\t<\/h4>\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__a3559ab\" aria-expanded=\"true\" aria-label=\"Open table of contents\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__a3559ab\" aria-expanded=\"true\" aria-label=\"Close table of contents\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div id=\"elementor-toc__a3559ab\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<svg class=\"elementor-toc__spinner eicon-animation-spin e-font-icon-svg e-eicon-loading\" aria-hidden=\"true\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M500 975V858C696 858 858 696 858 500S696 142 500 142 142 304 142 500H25C25 237 238 25 500 25S975 237 975 500 763 975 500 975Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8a9139e elementor-widget elementor-widget-heading\" data-id=\"8a9139e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What is the Difference Between Endothermic and Exothermic Reactions?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ffaef65 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"ffaef65\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tThe main difference between exothermic and endothermic reactions lies in the heat exchange with the surroundings:\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-44eeb2a elementor-widget elementor-widget-text-editor\" data-id=\"44eeb2a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul>\n<li><span style=\"text-decoration: underline;\"><strong>Endothermic reactions absorb energy<\/strong><\/span> in the form of heat from their surroundings, which leads to the surroundings becoming colder. This means that the products have more energy than the reactants, and the reaction requires heat, leading to a positive change in enthalpy (\u0394H).<\/li>\n<li><span style=\"text-decoration: underline;\"><strong>Exothermic reactions release energy<\/strong><\/span> in the form of heat to their surroundings, which leads to the surroundings becoming warmer. In this case, the products have less energy than the reactants, and the reaction releases heat, leading to a negative change in enthalpy (\u0394H).<\/li>\n<\/ul>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-39e791b elementor-widget__width-initial elementor-widget elementor-widget-image\" data-id=\"39e791b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"385\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/enthalphy-endothermic-vs-exothermic-1170x563-1-1024x493.png\" class=\"attachment-large size-large wp-image-24674\" alt=\"\" srcset=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/enthalphy-endothermic-vs-exothermic-1170x563-1-1024x493.png 1024w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/enthalphy-endothermic-vs-exothermic-1170x563-1-300x144.png 300w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/enthalphy-endothermic-vs-exothermic-1170x563-1-768x370.png 768w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/enthalphy-endothermic-vs-exothermic-1170x563-1.png 1170w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c7825d6 elementor-widget elementor-widget-heading\" data-id=\"c7825d6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How to Identify an Exothermic or Endothermic Reaction?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-43e3dff elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"43e3dff\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>There are two methods to recognize exothermic reactions:<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5bab2f7 elementor-widget elementor-widget-text-editor\" data-id=\"5bab2f7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ol>\n<li><span style=\"text-decoration: underline;\">Temperature Change:<\/span>\n<ul>\n<li><strong>In<\/strong> <strong>an<\/strong> <strong>exothermic<\/strong> <strong>reaction<\/strong>, energy is released, leading to an increase in the temperature of the reaction mixture. In contrast, <strong>in<\/strong> <strong>an<\/strong> <strong>endothermic<\/strong> <strong>reaction<\/strong>, energy is absorbed, resulting in a decrease in temperature. You can observe changes in temperature by placing a thermometer in the reaction mixture.<\/li>\n<\/ul>\n<\/li>\n<li><span style=\"text-decoration: underline;\">Enthalpy Change:<\/span>\n<ul>\n<li>The change in enthalpy (\u0394H) is the difference between the energy of the products and the energy of the reactants. <strong>If<\/strong> <strong>\u0394H<\/strong> <strong>is<\/strong> <strong>negative,<\/strong> <strong>it<\/strong> <strong>indicates<\/strong> <strong>an<\/strong> <strong>exothermic<\/strong> <strong>chemical<\/strong> <strong>reaction<\/strong>, because more energy is released when the products are formed than is used to break down the reactants. <strong>If<\/strong> <strong>\u0394H<\/strong> <strong>is<\/strong> <strong>positive,<\/strong> <strong>it<\/strong> <strong>indicates<\/strong> <strong>an endothermic<\/strong> <strong>chemical<\/strong> <strong>reaction<\/strong>, because less energy is released when the products are formed than the energy used to break down the reactants.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-189f4ba elementor-widget elementor-widget-heading\" data-id=\"189f4ba\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Exothermic and Endothermic Reactions Have Different Effects on the Environment:<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b5d35cd elementor-widget elementor-widget-text-editor\" data-id=\"b5d35cd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Exothermic reactions release heat into the environment, which can have both positive and negative environmental impacts. They are involved in processes such as respiration, combustion, and energy production. However, exothermic reactions can also contribute to environmental problems like air and water pollution.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-989780e elementor-widget elementor-widget-heading\" data-id=\"989780e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Further Examples of Exothermic Reactions:<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-896c74e elementor-widget elementor-widget-text-editor\" data-id=\"896c74e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ol>\n<li><span style=\"text-decoration: underline;\">Combustion of Wood or Coal:<\/span>\n<ul>\n<li>The combustion of wood or coal releases heat, making it an exothermic reaction. These reactions are used in heaters, furnaces, and engines for energy production.<\/li>\n<\/ul>\n<\/li>\n<li><span style=\"text-decoration: underline;\">Oxidation of Metals:<\/span>\n<ul>\n<li>When metals react with oxygen, like iron forming rust, it is an exothermic reaction where heat is released.<\/li>\n<\/ul>\n<\/li>\n<li><span style=\"text-decoration: underline;\">Chemical Explosives:<\/span>\n<ul>\n<li>Explosions in chemical explosives are exothermic reactions that release large amounts of energy in the form of heat and pressure.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0caf46e elementor-widget elementor-widget-spacer\" data-id=\"0caf46e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8e92d9d elementor-widget elementor-widget-spacer\" data-id=\"8e92d9d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-29ccf75 elementor-widget elementor-widget-text-editor\" data-id=\"29ccf75\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Endothermic reactions absorb heat from the surroundings. Although they are essential for processes like photosynthesis and cooking, they generally have a lesser direct impact on the environment compared to exothermic reactions.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-accc560 elementor-widget elementor-widget-spacer\" data-id=\"accc560\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-379655b elementor-widget elementor-widget-heading\" data-id=\"379655b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Further Examples of Endothermic Reactions:<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6c44b37 elementor-widget elementor-widget-text-editor\" data-id=\"6c44b37\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ol>\n<li><span style=\"text-decoration: underline;\">Photosynthesis:<\/span>\n<ul>\n<li>In photosynthesis, plants absorb carbon dioxide from the air and convert it using light energy into sugar and oxygen. This is an endothermic reaction as energy in the form of light is absorbed.<\/li>\n<\/ul>\n<\/li>\n<li><span style=\"text-decoration: underline;\">Boiling Water:<\/span>\n<ul>\n<li>Heating water to bring it to a boil is an endothermic reaction. During the boiling process, energy in the form of heat is supplied to convert the water particles into steam.<\/li>\n<\/ul>\n<\/li>\n<li><span style=\"text-decoration: underline;\">Dissolving Salt in Water:<\/span>\n<ul>\n<li>When salt is dissolved in water, the salt molecules absorb heat from the surroundings to break down the crystals and disperse in a dissolved form.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6a35d1d elementor-widget elementor-widget-spacer\" data-id=\"6a35d1d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>The main difference between exothermic and endothermic reactions lies in the heat exchange with the environment.<\/p>\n","protected":false},"author":3,"featured_media":8469,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[106],"tags":[],"class_list":["post-22536","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-wiki"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.linseis.com\/en\/wp-json\/wp\/v2\/posts\/22536","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.linseis.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.linseis.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.linseis.com\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.linseis.com\/en\/wp-json\/wp\/v2\/comments?post=22536"}],"version-history":[{"count":0,"href":"https:\/\/www.linseis.com\/en\/wp-json\/wp\/v2\/posts\/22536\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.linseis.com\/en\/wp-json\/wp\/v2\/media\/8469"}],"wp:attachment":[{"href":"https:\/\/www.linseis.com\/en\/wp-json\/wp\/v2\/media?parent=22536"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.linseis.com\/en\/wp-json\/wp\/v2\/categories?post=22536"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.linseis.com\/en\/wp-json\/wp\/v2\/tags?post=22536"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}