{"id":10809,"date":"2018-02-20T16:18:51","date_gmt":"2018-02-20T10:48:51","guid":{"rendered":"http:\/\/mycbseguide.com\/blog\/?p=10809"},"modified":"2019-01-29T12:53:46","modified_gmt":"2019-01-29T07:23:46","slug":"chemical-effects-electric-current-class-8-notes-science","status":"publish","type":"post","link":"https:\/\/mycbseguide.com\/blog\/chemical-effects-electric-current-class-8-notes-science\/","title":{"rendered":"Chemical Effects of Electric Current class 8 Notes Science"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/mycbseguide.com\/blog\/chemical-effects-electric-current-class-8-notes-science\/#Class_8_Science_notes_Chapter_14_Chemical_Effects_of_Electric_Current\" >Class 8 Science notes Chapter 14\u00a0Chemical Effects of Electric Current<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/mycbseguide.com\/blog\/chemical-effects-electric-current-class-8-notes-science\/#CBSE_Class_8_Science_Revision_Notes_Chemical_Effects_of_Electric_Current\" >CBSE Class 8 Science Revision Notes Chemical Effects of Electric Current<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/mycbseguide.com\/blog\/chemical-effects-electric-current-class-8-notes-science\/#Electrolysis\" >Electrolysis:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/mycbseguide.com\/blog\/chemical-effects-electric-current-class-8-notes-science\/#Application_of_Electroplating\" >Application of Electroplating:<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/mycbseguide.com\/blog\/chemical-effects-electric-current-class-8-notes-science\/#Chemical_Effects_of_Electric_Current_class_8_Notes_Science\" >Chemical Effects of Electric Current class 8 Notes Science<\/a><\/li><\/ul><\/nav><\/div>\n<p><strong>Chemical Effects of Electric Current class 8 Notes Science<\/strong> in PDF are available for free download in myCBSEguide mobile app. The best app for CBSE students now provides Chemical Effects of Electric Current class 8 Notes Science latest chapter wise notes for quick preparation of CBSE exams and school-based annual examinations. Class 8 Science notes on chapter 14 Chemical Effects of Electric Current Science are also available for download in CBSE Guide website.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Class_8_Science_notes_Chapter_14_Chemical_Effects_of_Electric_Current\"><\/span><strong>Class 8 Science notes Chapter 14\u00a0<\/strong><strong>Chemical Effects of Electric Current<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Download CBSE class 8th revision notes for chapter 14 Chemical Effects of Electric Current in PDF format for free. Download revision notes for Chemical Effects of Electric Current class 8 Notes and score high in exams. These are the Chemical Effects of Electric Current class 8 Notes prepared by team of expert teachers. The revision notes help you revise the whole chapter 14 in minutes. Revision notes in exam days is one of the best tips recommended by teachers during exam days.<\/p>\n<p style=\"text-align: center;\"><strong><a class=\"button\" href=\"https:\/\/mycbseguide.com\/downloads\/cbse-class-08-science\/1466\/cbse-revision-notes\/7\/\">Download Revision Notes as PDF<\/a><\/strong><\/p>\n<h2><span class=\"ez-toc-section\" id=\"CBSE_Class_8_Science_Revision_Notes_Chemical_Effects_of_Electric_Current\"><\/span><strong>CBSE Class 8 Science Revision Notes <\/strong><strong>Chemical Effects of Electric Current<br \/>\n<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Materials through which electric current can pass through easily are called conductors of electricity. Electrical conductivity is a measure of the ability of a substance to allow the flow of an electric current. Among solids metals and graphite are good conductors of electricity which have high electrical conductivity. Some liquids are also good conductors.<\/p>\n<p>Pure water or distilled water is a poor conductor of electricity. But the presence of even small amount of impurities(salts and minerals) makes water a good conductor as it\u00a0contains ions through which conduction takes place. Hence water from taps, wells, ponds, rivers, seas, lakes, etc. conduct electricity as they contain impurities.<\/p>\n<p>Most liquids that conduct electricity are solutions of acids, bases, and salts. When electricity is passed through a conducting solution, the molecules of the solution dissociate into ions. Ions are atoms or group of atoms with a positive or a negative charge. These ions cause electrical conduction through the liquid. A liquid That conducts electricity due to the presence of ions is called an electrolyte.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Electrolysis\"><\/span><strong>Electrolysis:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The process of decomposition of a chemical compound in a solution when an electric current passes through it is called electrolysis. This process is due to the chemical effect of electric current.<\/p>\n<p>Two electrodes are inserted in the solution and are connected to the terminals of a battery with a switch in between. This arrangement is called an electrolytic cell. The electrode that is connected to the positive terminal of the battery is called the anode, and the other connected to the negative terminal is called the cathode.<\/p>\n<p>Electrolysis is used in refining and extraction of metals from impure samples. This process is called electrorefining. It is also useful in coating one metal with another. This process is called electroplating.<\/p>\n<p>The passage of an electric current through a conducting solution causes chemical reactions. This is known as the chemical effect of electric current. Some of the chemical effects of electric current are the following:<\/p>\n<p>\u2022 \u00a0Formation of bubbles of a gas on the electrodes<br \/>\n\u2022 \u00a0Deposition of metal on electrodes<br \/>\n\u2022 \u00a0Change in colour of solutions<\/p>\n<p><strong>Electroplating:<\/strong>The process of depositing a layer of any desired metal on another material<br \/>\nby means of electricity is called electroplating.<\/p>\n<p>The object to be electroplated is made the cathode (negative electrode) by connecting it to the negative terminal of the battery. The metal which has to be deposited is made the anode (positive electrode) by connecting it to the positive terminal of the battery. The electrolyte is usually a salt solution of the metal to be coated.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Application_of_Electroplating\"><\/span><strong>Application of Electroplating:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>(i)\u00a0 Metals that rust are often coated with other metals to prevent rusting.<br \/>\n(ii)\u00a0Chromium plating is found on bath taps, car bumpers, etc. to give a bright attractive appearance and resist scratches and wear.<br \/>\n(iii)\u00a0 Silver plating is done on cutlery and jewellery items.<br \/>\n(iv)\u00a0Tin cans, used for storing food, are made by electroplating tin onto iron. Tin is less reactive than iron. Thus, food does not come into contact with iron and is protected from getting spoilt.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Chemical_Effects_of_Electric_Current_class_8_Notes_Science\"><\/span>Chemical Effects of Electric Current class 8 Notes Science<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Chemical Effects of Electric Current class 8 Notes Science. CBSE quick revision note for class-8 Science, Chemistry, Math\u2019s, Biology and other subject are very helpful to revise the whole syllabus during exam days. The revision notes covers all important formulas and concepts given in the chapter. Even if you wish to have an overview of a chapter, quick revision notes are here to do if for you. These notes will certainly save your time during stressful exam days.<\/p>\n<ul>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-08-mathematics\/1449\/cbse-revision-notes\/7\/\">Mathematics<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-08-science\/1466\/cbse-revision-notes\/7\/\">Science<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-08-social-science\/1485\/cbse-revision-notes\/7\/\">Social Science<\/a><\/li>\n<\/ul>\n<p>To download Chemical Effects of Electric Current class 8 Notes Science, sample paper for class 8 Science, Social Science, Science; do check myCBSEguide app or website. myCBSEguide provides sample papers with solution, test papers for chapter-wise practice, NCERT solutions, NCERT Exemplar solutions, quick revision notes for ready reference, CBSE guess papers and CBSE important question papers. Sample Paper all are made available through\u00a0<a href=\"https:\/\/play.google.com\/store\/apps\/details?id=in.techchefs.MyCBSEGuide&amp;referrer=utm_source%3Dmycbse_bottom%26utm_medium%3Dtext%26utm_campaign%3Dmycbseads\"><strong>the best app for CBSE students<\/strong><\/a>\u00a0and myCBSEguide website.<\/p>\n<ul>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/10779-2\/\">Crop Production and Management class 8 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/microorganisms-class-8-notes-science\/\">Microorganisms class 8 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/synthetic-fibres-plastics-class-8-notes-science\/\">Synthetic Fibres and Plastics class 8 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/materials-metals-non-metals-class-8-notes-science\/\">Materials: Metals and Non-Metals class 8 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/coal-petroleum-class-8-notes-science\/\">Coal and Petroleum class 8 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/combustion-flame-class-8-notes-science\/\">Combustion and Flame class 8 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/conservation-plants-animals-class-8-notes-science\/\">Conservation of Plants and Animals class 8 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/cell-structure-functions-class-8-notes-science\/\">Cell-Structure and Functions class 8 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/reproduction-animals-class-8-notes-science\/\">Reproduction in Animals class 8 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/reaching-age-adolescence-class-8-notes-science\/\">Reaching the age of Adolescence class 8 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/force-pressure-class-8-notes-science\/\">Force and Pressure class 8 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/friction-class-8-notes-science\/\">Friction class 8 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/sound-class-8-notes-science\/\">Sound class 8 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/natural-phenomena-class-8-notes-science\/\">Some Natural Phenomena class 8 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/light-class-8-notes-science\/\">Light class 8 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/stars-solar-system-class-8-notes-science\/\">Stars and the Solar System class 8 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/pollution-air-water-class-8-notes-science\/\">Pollution of Air and Water class 8 Notes Science<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Chemical Effects of Electric Current class 8 Notes Science in PDF are available for free download in myCBSEguide mobile app. The best app for CBSE students now provides Chemical Effects of Electric Current class 8 Notes Science latest chapter wise notes for quick preparation of CBSE exams and school-based annual examinations. Class 8 Science notes &#8230; <a title=\"Chemical Effects of Electric Current class 8 Notes Science\" class=\"read-more\" href=\"https:\/\/mycbseguide.com\/blog\/chemical-effects-electric-current-class-8-notes-science\/\" aria-label=\"More on Chemical Effects of Electric Current class 8 Notes Science\">Read more<\/a><\/p>\n","protected":false},"author":2,"featured_media":10780,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[293,456],"tags":[457,150,1541,974,426,240,962],"class_list":["post-10809","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cbse-class-08","category-revision-notes","tag-cbse-notes","tag-cbse-notes-and-key-points","tag-cbse-revision-notes","tag-chemical-effects-of-electric-current","tag-quick-revision","tag-quick-revision-notes","tag-science-notes"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Chemical Effects of Electric Current class 8 Notes Science | myCBSEguide<\/title>\n<meta name=\"description\" content=\"Chemical Effects of Electric Current class 8 Notes Science chp-14 in PDF format for free download. 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