{"id":1129,"date":"2023-05-18T17:05:31","date_gmt":"2023-05-18T14:05:31","guid":{"rendered":"https:\/\/cedra.academy\/?p=1129"},"modified":"2023-09-28T17:15:06","modified_gmt":"2023-09-28T14:15:06","slug":"sistemul-periodic-al-elementelor","status":"publish","type":"post","link":"https:\/\/cedra.academy\/?p=1129","title":{"rendered":"Sistemul periodic al elementelor"},"content":{"rendered":"\n<div class=\"wp-block-file\"><a id=\"wp-block-file--media-b73364c0-5131-4b56-9fdc-fd672afa6376\" href=\"https:\/\/cedra.academy\/wp-content\/uploads\/2023\/09\/Istoricul_sistemului_periodic_al_element.pptx\">Istoricul_sistemului_periodic_al_element<\/a><a href=\"https:\/\/cedra.academy\/wp-content\/uploads\/2023\/09\/Istoricul_sistemului_periodic_al_element.pptx\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-b73364c0-5131-4b56-9fdc-fd672afa6376\">Descarc\u0103<\/a><\/div>\n\n\n\n<div class=\"wp-block-file\"><a id=\"wp-block-file--media-8c67d6e8-f202-4790-bc43-45a89f9ac0a9\" href=\"https:\/\/cedra.academy\/wp-content\/uploads\/2023\/09\/sistemul_periodic_al_elementelorpetcu_s.ppt\">sistemul_periodic_al_elementelorpetcu_s<\/a><a href=\"https:\/\/cedra.academy\/wp-content\/uploads\/2023\/09\/sistemul_periodic_al_elementelorpetcu_s.ppt\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-8c67d6e8-f202-4790-bc43-45a89f9ac0a9\">Descarc\u0103<\/a><\/div>\n\n\n\n<p>10 idei despre Tabelul lui Mendeleev<\/p>\n\n\n\n<ol>\n<li>Tabelul lui Mendeleev, cunoscut \u0219i sub numele de Tabelul Periodic al Elementelor, este un aranjament sistemar al elementelor chimice \u00een func\u021bie de propriet\u0103\u021bile lor chimice \u0219i fizice.<\/li>\n\n\n\n<li>Dmitri Mendeleev, un chimist rus, a dezvoltat acest tabel \u00een 1869, reu\u0219ind s\u0103 prezic\u0103 existen\u021ba \u0219i propriet\u0103\u021bile unor elemente care nu fuseser\u0103 \u00eenc\u0103 descoperite.<\/li>\n\n\n\n<li>Mendeleev a organizat elementele \u00een func\u021bie de masa atomic\u0103 \u0219i a observat c\u0103 anumite propriet\u0103\u021bi chimice se repet\u0103 periodic.<\/li>\n\n\n\n<li>Tabelul Periodic este alc\u0103tuit din \u0219iruri \u0219i coloane, unde elementele din aceea\u0219i coloan\u0103 au propriet\u0103\u021bi chimice similare.<\/li>\n\n\n\n<li>Elementele sunt aranjate \u00een ordine cresc\u0103toare a num\u0103rului atomic, ceea ce \u00eenseamn\u0103 c\u0103 num\u0103rul de protoni din nucleul atomului cre\u0219te de la st\u00e2nga la dreapta \u0219i de sus \u00een jos \u00een tabel.<\/li>\n\n\n\n<li>O important\u0103 realizare a Tabelului lui Mendeleev a fost identificarea locurilor goale \u00een tabel, care indicau existen\u021ba unor elemente necunoscute la momentul respectiv.<\/li>\n\n\n\n<li>Cu timpul, noile elemente au fost descoperite \u0219i au fost plasate \u00een tabel \u00een locurile previzionate de Mendeleev.<\/li>\n\n\n\n<li>Tabelul Periodic este esen\u021bial \u00een chimie, deoarece ofer\u0103 o structur\u0103 logic\u0103 pentru a \u00een\u021belege \u0219i organiza propriet\u0103\u021bile elementelor.<\/li>\n\n\n\n<li>Acesta serve\u0219te ca baz\u0103 pentru \u00eenv\u0103\u021barea chimiei moderne \u0219i pentru dezvoltarea unor teorii importante, cum ar fi teoria atomic\u0103 \u0219i teoria leg\u0103turilor chimice.<\/li>\n\n\n\n<li>Tabelul lui Mendeleev este una dintre cele mai importante realiz\u0103ri \u00een \u0219tiin\u021ba chimiei \u0219i r\u0103m\u00e2ne un instrument fundamental \u00een \u00een\u021belegerea \u0219i explorarea lumii elementelor chimice.<\/li>\n<\/ol>\n\n\n\n<p><br><\/p>\n","protected":false},"excerpt":{"rendered":"<p>10 idei despre Tabelul lui Mendeleev<\/p>\n","protected":false},"author":1,"featured_media":1130,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"_links":{"self":[{"href":"https:\/\/cedra.academy\/index.php?rest_route=\/wp\/v2\/posts\/1129"}],"collection":[{"href":"https:\/\/cedra.academy\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cedra.academy\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cedra.academy\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cedra.academy\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1129"}],"version-history":[{"count":1,"href":"https:\/\/cedra.academy\/index.php?rest_route=\/wp\/v2\/posts\/1129\/revisions"}],"predecessor-version":[{"id":1133,"href":"https:\/\/cedra.academy\/index.php?rest_route=\/wp\/v2\/posts\/1129\/revisions\/1133"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cedra.academy\/index.php?rest_route=\/wp\/v2\/media\/1130"}],"wp:attachment":[{"href":"https:\/\/cedra.academy\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1129"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cedra.academy\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1129"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cedra.academy\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1129"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}