{"id":3844,"date":"2023-01-09T10:39:25","date_gmt":"2023-01-09T10:39:25","guid":{"rendered":"https:\/\/7thclass.deltapublications.in\/?page_id=3844"},"modified":"2025-09-10T06:54:20","modified_gmt":"2025-09-10T06:54:20","slug":"s-6-d-crystallisation","status":"publish","type":"page","link":"https:\/\/7thclass.deltapublications.in\/index.php\/s-6-d-crystallisation\/","title":{"rendered":"S-6.d Crystallisation"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color\" style=\"color:#00056d;text-transform:uppercase\"><strong>Crystallization<\/strong><\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div style=\"position: relative; width: 100%; height: 0; padding-top: 56.2500%;\n padding-bottom: 0; box-shadow: 0 2px 8px 0 rgba(63,69,81,0.16); margin-top: 1.6em; margin-bottom: 0.9em; overflow: hidden;\n border-radius: 8px; will-change: transform;\">\n  <iframe loading=\"lazy\" style=\"position: absolute; width: 100%; height: 100%; top: 0; left: 0; border: none; padding: 0;margin: 0;\"\n    src=\"https:\/\/www.canva.com\/design\/DAF-5RtDhVk\/CNQqIZwYcDePWd4Lln6ymg\/watch?embed\" allowfullscreen=\"allowfullscreen\" allow=\"fullscreen\">\n  <\/iframe>\n<\/div>\n<a href=\"https:&#x2F;&#x2F;www.canva.com&#x2F;design&#x2F;DAF-5RtDhVk&#x2F;CNQqIZwYcDePWd4Lln6ymg&#x2F;watch?utm_content=DAF-5RtDhVk&amp;utm_campaign=designshare&amp;utm_medium=embeds&amp;utm_source=link\" target=\"_blank\" rel=\"noopener\">crystallisation<\/a> by Delta publications\n<\/div>\n<\/div>\n\n\n\n<p class=\"has-text-color has-huge-font-size\" style=\"color:#74008b\"><strong>Key Notes :<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-311def4ab6c5b844c8e2a73ba38a6eb0\" style=\"color:#000060\"><strong>What is Crystallization?<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Crystallization is the process by which a solid forms, where the atoms or molecules are arranged in a highly ordered structure known as a crystal.<\/li>\n\n\n\n<li>It is often used to separate a pure substance from a solution.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-2cc028690d2df2925d2258558f40c1c7\" style=\"color:#000060\"><strong>How Crystallization Works<\/strong><\/h3>\n\n\n\n<ol class=\"wp-block-list has-large-font-size\">\n<li><strong>Dissolution<\/strong>: A solid (solute) is dissolved in a solvent (like water) to form a solution.<\/li>\n\n\n\n<li><strong>Cooling or Evaporation<\/strong>: The solvent is slowly evaporated or the temperature is lowered, causing the solute to come out of the solution and form crystals.<\/li>\n\n\n\n<li><strong>Formation of Crystals<\/strong>: The solute molecules or ions arrange themselves in a repeating pattern to form a crystal lattice.<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-3acceb7cc8b84138d1243e5534621895\" style=\"color:#000060\"><strong>Types of Crystallization<\/strong><\/h3>\n\n\n\n<ol class=\"wp-block-list has-large-font-size\">\n<li><strong>Evaporative Crystallization<\/strong>:\n<ul class=\"wp-block-list\">\n<li>Involves evaporating the solvent to allow crystals to form.<\/li>\n\n\n\n<li>Common in nature, like in the formation of salt crystals from seawater.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Coolant Crystallization<\/strong>:\n<ul class=\"wp-block-list\">\n<li>Involves cooling the solution, which causes the solute to form crystals.<\/li>\n\n\n\n<li>Often used in the laboratory.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-6ec80d0ebd6de11256e0f13d584c3d77\" style=\"color:#000060\"><strong>Examples of Crystallization<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Salt Crystals<\/strong>: When seawater evaporates, salt crystals form.<\/li>\n\n\n\n<li><strong>Sugar Crystals<\/strong>: Crystallization of sugar is seen in candy making or when making rock candy.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-a241dfa08e93f0af57554ea019b5cae0\" style=\"color:#000060\"><strong>Importance of Crystallization<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Purification<\/strong>: Crystallization is used in laboratories and industries to purify substances.<\/li>\n\n\n\n<li><strong>Extraction<\/strong>: It is a useful method for extracting pure substances from mixtures.<\/li>\n\n\n\n<li><strong>Industrial Applications<\/strong>: Used in the production of substances like sugar, salt, and other minerals.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-a1d1c1bed2b238878be3e3165c950ba8\" style=\"color:#000060\"><strong>Factors Affecting Crystallization<\/strong><\/h3>\n\n\n\n<ol class=\"wp-block-list has-large-font-size\">\n<li><strong>Concentration<\/strong>: The more concentrated the solution, the more solute will crystallize.<\/li>\n\n\n\n<li><strong>Temperature<\/strong>: Lower temperatures often result in crystallization.<\/li>\n\n\n\n<li><strong>Rate of Cooling<\/strong>: Slow cooling allows larger crystals to form, while rapid cooling results in smaller crystals.<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-8db4b44404243dda024f27ef7ee2d2bb\" style=\"color:#000060\"><strong>Key Points to Remember<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Crystallization helps in obtaining pure substances from mixtures.<\/li>\n\n\n\n<li>It occurs when the solvent is removed or the solution is cooled.<\/li>\n\n\n\n<li>The resulting crystals are usually very pure, as impurities are left behind in the solution.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-large-font-size\" style=\"color:#d90000\"><strong>Let&#8217;s practice!<\/strong><\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/77077\/746\/650\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-22.png\" alt=\"\" class=\"wp-image-5906\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-22.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-22-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-22-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-22-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/77085\/847\/479\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-18.png\" alt=\"\" class=\"wp-image-5907\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-18.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-18-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-18-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-18-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Crystallization crystallisation by Delta publications Key Notes : What is Crystallization? How Crystallization Works Types of Crystallization Examples of Crystallization Importance of Crystallization Factors Affecting Crystallization Key Points to Remember Let&#8217;s practice!<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"footnotes":""},"class_list":["post-3844","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3844","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/comments?post=3844"}],"version-history":[{"count":23,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3844\/revisions"}],"predecessor-version":[{"id":16954,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3844\/revisions\/16954"}],"wp:attachment":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=3844"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}