{"id":3646,"date":"2023-01-09T11:19:04","date_gmt":"2023-01-09T11:19:04","guid":{"rendered":"https:\/\/6thclass.deltapublications.in\/?page_id=3646"},"modified":"2025-08-20T09:49:44","modified_gmt":"2025-08-20T09:49:44","slug":"s-5-a-introduction","status":"publish","type":"page","link":"https:\/\/6thclass.deltapublications.in\/index.php\/s-5-a-introduction\/","title":{"rendered":"s-5.a Introduction"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color\" style=\"color:#00056d;text-transform:uppercase\"><strong> introduction<\/strong><\/h2>\n\n\n\n<p class=\"has-text-color has-link-color has-huge-font-size wp-elements-aae0d72b0df05b1a7d05750bd97517d2\" style=\"color:#74008b\"><strong>Key Notes :<\/strong><\/p>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-5672cc5bb938c346aeb0b686da180981\" style=\"color:#000060\"><strong>Definition<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Separation of substances refers to the process of dividing or removing different components from a mixture to make them pure or separate the useful substances from the unwanted ones.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-36eae3c3cc04a1d2b95288a4b5248bee\" style=\"color:#000060\"><strong>Purpose of Separation<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>To remove <strong>impurities<\/strong> or harmful substances.<\/li>\n\n\n\n<li>To separate <strong>useful substances<\/strong> from a mixture (e.g., salt from seawater).<\/li>\n\n\n\n<li>To obtain a <strong>pure substance<\/strong> from a mixture.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-0df527b7f51645e82d395cf74b5f759c\" style=\"color:#000060\"><strong>Types of Mixtures<\/strong>:<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"317\" height=\"159\" src=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/image-107.png\" alt=\"\" class=\"wp-image-13652\" srcset=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/image-107.png 317w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/image-107-300x150.png 300w\" sizes=\"auto, (max-width: 317px) 100vw, 317px\" \/><\/figure><\/div>\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Homogeneous mixture<\/strong>: A mixture in which the components are evenly distributed (e.g., salt in water).<\/li>\n\n\n\n<li><strong>Heterogeneous mixture<\/strong>: A mixture in which the components are not evenly distributed (e.g., sand in water).<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-c07ee34b170bf8cbfcb63fb0c89765b0\" style=\"color:#000060\"><strong>Need for Separation<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Different substances in a mixture may have different properties (e.g., size, weight, solubility) which allow them to be separated.<\/li>\n\n\n\n<li>Separation is necessary in everyday life (e.g., separating rice from small stones, cream from milk).<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-ddfc4ca5742006e4a2e99b48ee2b8301\" style=\"color:#000060\"><strong>Common Methods of Separation<\/strong>:<\/p>\n\n\n\n<p class=\"has-large-font-size\"><strong>Handpicking<\/strong>: Used when the substances are large enough to be picked by hand (e.g., separating pebbles from grains).<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"400\" src=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/image-108.png\" alt=\"\" class=\"wp-image-13653\" style=\"width:204px;height:auto\" srcset=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/image-108.png 400w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/image-108-300x300.png 300w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/image-108-150x150.png 150w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/figure><\/div>\n\n\n<p class=\"has-large-font-size\"><strong>Threshing<\/strong>: Used to separate grains from stalks.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/image-110-1024x683.png\" alt=\"\" class=\"wp-image-13655\" style=\"width:308px;height:auto\" srcset=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/image-110-1024x683.png 1024w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/image-110-300x200.png 300w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/image-110-768x512.png 768w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/image-110.png 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p class=\"has-large-font-size\"><strong>Winnowing<\/strong>: Used to separate lighter particles from heavier ones using wind (e.g., separating husk from grain).<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"237\" height=\"212\" src=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/image-111.png\" alt=\"\" class=\"wp-image-13656\"\/><\/figure><\/div>\n\n\n<p class=\"has-large-font-size\"><strong>Sieving<\/strong>: Used to separate particles of different sizes using a sieve (e.g., separating flour from bran).<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/image-112.png\" alt=\"\" class=\"wp-image-13657\" style=\"width:254px;height:auto\" srcset=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/image-112.png 500w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/image-112-300x300.png 300w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/image-112-150x150.png 150w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/image-112-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><\/div>\n\n\n<p class=\"has-large-font-size\"><strong>Sedimentation and Decantation<\/strong>: Sedimentation allows heavier particles to settle at the bottom of a liquid, and decantation separates the liquid from the solid.<\/p>\n\n\n\n<p class=\"has-large-font-size\"><strong>Filtration<\/strong>: Used to separate insoluble solids from liquids (e.g., separating sand from water).<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"327\" src=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/Filtration-Process-along-with-Example-700x327-1.png\" alt=\"\" class=\"wp-image-13659\" srcset=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/Filtration-Process-along-with-Example-700x327-1.png 700w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/Filtration-Process-along-with-Example-700x327-1-300x140.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n\n\n\n<p class=\"has-large-font-size\"><strong>Evaporation<\/strong>: Used to separate a soluble solid from a liquid (e.g., obtaining salt from seawater).<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"941\" height=\"661\" src=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/image-113.png\" alt=\"\" class=\"wp-image-13658\" style=\"width:325px;height:auto\" srcset=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/image-113.png 941w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/image-113-300x211.png 300w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/image-113-768x539.png 768w\" sizes=\"auto, (max-width: 941px) 100vw, 941px\" \/><\/figure><\/div>\n\n\n<p class=\"has-large-font-size\"><strong>Distillation<\/strong>: Used to separate two liquids with different boiling points (e.g., separating alcohol from water).<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1007\" height=\"599\" src=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/image-114.png\" alt=\"\" class=\"wp-image-13660\" style=\"width:402px;height:auto\" srcset=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/image-114.png 1007w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/image-114-300x178.png 300w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2024\/09\/image-114-768x457.png 768w\" sizes=\"auto, (max-width: 1007px) 100vw, 1007px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-3e18a0a6654ea8c36fd8ff2ce534700a\" style=\"color:#000060\"><strong>Application in Daily Life<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Purifying drinking water.<\/li>\n\n\n\n<li>Separating solid waste from liquids in the kitchen.<\/li>\n\n\n\n<li>Processing raw materials in industries.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-8d8c7aec3a2d0b4d67bf78af09098065\" style=\"color:#000060\"><strong>Key Concepts<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Soluble substances<\/strong> dissolve in liquids (e.g., salt in water), whereas <strong>insoluble substances<\/strong> do not (e.g., sand in water).<\/li>\n\n\n\n<li>Different methods of separation are chosen based on the physical properties of the substances in the mixture, such as size, solubility, weight, and boiling point.<\/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\/96169\/305\/554\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-15.png\" alt=\"\" class=\"wp-image-4845\" srcset=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-15.png 500w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-15-300x300.png 300w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-15-150x150.png 150w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-15-400x400.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\/77857\/888\/425\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-15.png\" alt=\"\" class=\"wp-image-4846\" srcset=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-15.png 500w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-15-300x300.png 300w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-15-150x150.png 150w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-15-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>introduction Key Notes : Definition: Purpose of Separation: Types of Mixtures: Need for Separation: Common Methods of Separation: Handpicking: Used when the substances are large enough to be picked by hand (e.g., separating pebbles from grains). Threshing: Used to separate grains from stalks. Winnowing: Used to separate lighter particles from heavier ones using wind (e.g.,<a class=\"more-link\" href=\"https:\/\/6thclass.deltapublications.in\/index.php\/s-5-a-introduction\/\">Continue reading <span class=\"screen-reader-text\">&#8220;s-5.a Introduction&#8221;<\/span><\/a><\/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,"_mi_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-3646","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/6thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3646","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/6thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/6thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/6thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/6thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/comments?post=3646"}],"version-history":[{"count":39,"href":"https:\/\/6thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3646\/revisions"}],"predecessor-version":[{"id":16442,"href":"https:\/\/6thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3646\/revisions\/16442"}],"wp:attachment":[{"href":"https:\/\/6thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=3646"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}