{"id":3842,"date":"2023-01-09T10:39:11","date_gmt":"2023-01-09T10:39:11","guid":{"rendered":"https:\/\/7thclass.deltapublications.in\/?page_id=3842"},"modified":"2025-09-10T06:55:16","modified_gmt":"2025-09-10T06:55:16","slug":"s-6-c-rusting-of-iron","status":"publish","type":"page","link":"https:\/\/7thclass.deltapublications.in\/index.php\/s-6-c-rusting-of-iron\/","title":{"rendered":"S-6.c Rusting Of Iron"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color\" style=\"color:#00056d;text-transform:uppercase\"><strong>Rusting Of Iron<\/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-5fIfqw4\/3LuXOOqYP-qiJkQObVGI1A\/watch?embed\" allowfullscreen=\"allowfullscreen\" allow=\"fullscreen\">\n  <\/iframe>\n<\/div>\n<a href=\"https:&#x2F;&#x2F;www.canva.com&#x2F;design&#x2F;DAF-5fIfqw4&#x2F;3LuXOOqYP-qiJkQObVGI1A&#x2F;watch?utm_content=DAF-5fIfqw4&amp;utm_campaign=designshare&amp;utm_medium=embeds&amp;utm_source=link\" target=\"_blank\" rel=\"noopener\">rusting of iron<\/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<p class=\"has-text-color has-large-font-size\" style=\"color:#000060\"><strong>Definition of Rusting<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Rusting is a chemical reaction in which iron reacts with oxygen and water to form iron oxide (commonly known as rust).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-68653f3803cf4f5897c14005a961bf1b\" style=\"color:#000060\"><strong>Conditions for Rusting<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Rusting occurs when iron is exposed to both water (moisture) and oxygen from the air. The process is faster in the presence of saltwater, which acts as an electrolyte.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-a26c13d60cd3bfb21b7cd965553b8ff8\" style=\"color:#000060\"><strong>The Chemical Reaction<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>The process of rusting can be represented by the following chemical equation: <strong>4Fe+3O2+6H2O\u21924Fe(OH)3<\/strong> This forms iron(III) hydroxide, which eventually dehydrates to form iron oxide (rust).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-8bfbfb0e5e425835041dc86f648e652a\" style=\"color:#000060\"><strong>Stages of Rusting<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Stage 1<\/strong>: Iron reacts with water and oxygen to form hydrated iron(III) oxide.<\/li>\n\n\n\n<li><strong>Stage 2<\/strong>: The hydrated iron(III) oxide dehydrates to form reddish-brown iron oxide (rust).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-1e7e423e7c0cb35ed8b31a13f4ff6676\" style=\"color:#000060\"><strong>Factors Affecting Rusting<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Presence of water and oxygen<\/strong>: Water and oxygen are essential for rusting to occur.<\/li>\n\n\n\n<li><strong>Saltwater<\/strong>: Salt accelerates rusting as it increases the conductivity of water.<\/li>\n\n\n\n<li><strong>Environmental conditions<\/strong>: Humid and wet climates increase the rate of rusting.<\/li>\n\n\n\n<li><strong>Acidic environments<\/strong>: Acidic conditions (e.g., rainwater) speed up rusting.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-47b555aa9fd8af69536893ee99e4ddb8\" style=\"color:#000060\"><strong>Prevention of Rusting<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Painting<\/strong>: Coating iron with paint prevents exposure to moisture and air.<\/li>\n\n\n\n<li><strong>Galvanization<\/strong>: Coating iron with a layer of zinc to protect it from rust.<\/li>\n\n\n\n<li><strong>Alloying<\/strong>: Mixing iron with other metals (e.g., stainless steel) to make it more resistant to rust.<\/li>\n\n\n\n<li><strong>Use of Oil or Grease<\/strong>: Coating iron with oil or grease to prevent moisture contact.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-e6d98acc5e179a6bcdbd2f3089fff9b4\" style=\"color:#000060\"><strong>Importance of Preventing Rusting<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Rust weakens iron and steel structures, leading to corrosion and damage.<\/li>\n\n\n\n<li>It affects the lifespan of objects like bridges, vehicles, and tools.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-59bd64ff6f5ea7b26d9f134c5fac3a34\" style=\"color:#000060\"><strong>Real-life Examples<\/strong>:<\/p>\n\n\n\n<p class=\"has-primary-color has-text-color has-large-font-size\"><strong>Rusting of Cars<\/strong>: Cars exposed to rain and saltwater can develop rust on the body and parts.<\/p>\n\n\n\n<p class=\"has-large-font-size\"><strong>Rusting of Nails<\/strong>: When iron nails are exposed to moisture, they rust over time.<\/p>\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\/225\/189\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-23.png\" alt=\"\" class=\"wp-image-5909\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-23.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-23-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-23-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-23-400x400.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\/682\/274\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-19.png\" alt=\"\" class=\"wp-image-5910\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-19.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-19-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-19-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-19-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Rusting Of Iron rusting of iron by Delta publications Key Notes : Definition of Rusting: Conditions for Rusting: The Chemical Reaction: Stages of Rusting: Factors Affecting Rusting: Prevention of Rusting: Importance of Preventing Rusting: Real-life Examples: Rusting of Cars: Cars exposed to rain and saltwater can develop rust on the body and parts. Rusting of<a class=\"more-link\" href=\"https:\/\/7thclass.deltapublications.in\/index.php\/s-6-c-rusting-of-iron\/\">Continue reading <span class=\"screen-reader-text\">&#8220;S-6.c Rusting Of Iron&#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,"footnotes":""},"class_list":["post-3842","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3842","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=3842"}],"version-history":[{"count":26,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3842\/revisions"}],"predecessor-version":[{"id":16956,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3842\/revisions\/16956"}],"wp:attachment":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=3842"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}