{"id":4373,"date":"2024-09-22T16:57:39","date_gmt":"2024-09-22T16:57:39","guid":{"rendered":"https:\/\/workhouse.sweetdishy.com\/?p=4373"},"modified":"2024-09-22T16:57:40","modified_gmt":"2024-09-22T16:57:40","slug":"thomsons-plum-pudding-model-of-the-atom","status":"publish","type":"post","link":"https:\/\/workhouse.sweetdishy.com\/index.php\/2024\/09\/22\/thomsons-plum-pudding-model-of-the-atom\/","title":{"rendered":"THOMSON\u2019S \u201cPLUM PUDDING\u201d MODEL OF THE ATOM"},"content":{"rendered":"\n<p>Thomson concluded that the negatively charged particle of cathode rays must be a fundamental part of matter itself. His model presented the atom containing a large number of smaller bodies, which he still called&nbsp;<em>corpuscles<\/em>. Since common atoms are electrically neutral, Thomson proposed that the atom comprises separate negative and positive parts. The negative corpuscles (electrons) were the carriers of negative electrical charge, and the positive ion left behind was a bubble with much larger mass than the negative corpuscles.<\/p>\n\n\n\n<p>At a time before the discovery of the atomic nucleus, Thomson imagined that \u201cthe atoms of the elements consist of a number of negatively electrified corpuscles enclosed in a sphere of uniform positive electrification.\u201d<\/p>\n\n\n\n<p>Thomson\u2019s 1904 model was compared by his fellow scientists to a British dessert called plum pudding (Figure 55): the atom is composed of electrons surrounded by a soup of positive charge to balance the electrons\u2019 negative charges, like negatively charged \u201cplums\u201d surrounded by positively charged \u201cpudding.\u201d<\/p>\n\n\n\n<p id=\"fig55\">Figure 55\u00a0In Thomson\u2019s \u201cplum pudding\u201d model of the atom, tiny electron \u201cplums\u201d float inside a much larger blob of positively charged \u201cpudding.\u201d Ernest Rutherford proved this model wrong in 1911 after he discovered the atomic nucleus.<img loading=\"lazy\" decoding=\"async\" width=\"309\" height=\"355\" src=\"https:\/\/learning.oreilly.com\/api\/v2\/epubs\/urn:orm:book:9781118170700\/files\/OEBPS\/images\/80-1.jpg\" alt=\"\"><\/p>\n\n\n\n<p>This model was shown to be false by an experiment conducted by Ernest Rutherford in 1911, in which Rutherford discovered that the small nucleus of the atom contained a very high positive charge; this discovery led to the Rutherford model of the atom.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Thomson concluded that the negatively charged particle of cathode rays must be a fundamental part of matter itself. His model presented the atom containing a large number of smaller bodies, which he still called&nbsp;corpuscles. Since common atoms are electrically neutral, Thomson proposed that the atom comprises separate negative and positive parts. The negative corpuscles (electrons) [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4174,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[513],"tags":[],"class_list":["post-4373","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-atoms-and-radioactivity"],"jetpack_featured_media_url":"https:\/\/workhouse.sweetdishy.com\/wp-content\/uploads\/2024\/09\/atom-2.png","_links":{"self":[{"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/posts\/4373","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/comments?post=4373"}],"version-history":[{"count":1,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/posts\/4373\/revisions"}],"predecessor-version":[{"id":4374,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/posts\/4373\/revisions\/4374"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/media\/4174"}],"wp:attachment":[{"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/media?parent=4373"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/categories?post=4373"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/tags?post=4373"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}