{"id":1412,"date":"2015-09-12T09:24:19","date_gmt":"2015-09-12T09:24:19","guid":{"rendered":"http:\/\/paksc.org\/pk\/?p=1412"},"modified":"2017-11-14T03:39:26","modified_gmt":"2017-11-14T03:39:26","slug":"does-mass-change-in-chemical-reactions","status":"publish","type":"post","link":"https:\/\/paksc.org\/pk\/science-experiments\/chemistry-experiments\/does-mass-change-in-chemical-reactions\/","title":{"rendered":"Does mass change in Chemical Reactions"},"content":{"rendered":"<h3>Mass change in chemical reaction<\/h3>\n<h2 style=\"text-align: center;\">Activity 1 Iron gains mass when it burns<\/h2>\n<h3>Apparatus &amp; Materials<\/h3>\n<ul>\n<li>Steel Wool<\/li>\n<li>Spirit Lamp<\/li>\n<li>Match Box<\/li>\n<li>Tweezers<\/li>\n<\/ul>\n<h3>Construction<\/h3>\n<ol>\n<li>\u00a0Make two balls of steel wool of almost same sizes.<\/li>\n<li>Put the iron balls in the dishes and balance them.<\/li>\n<li>Take one steel wool ball from the balance.<\/li>\n<li>Ignite the spirit lamp on a paper.<\/li>\n<li>Burn the steel wool ball well for 3-4 minutes.<\/li>\n<li>Return the burn steel wool ball and its fragments to the dish of the balance.<\/li>\n<li>Replace the balance on the fulcrum and observe the movement.<\/li>\n<\/ol>\n<h3>Result:<\/h3>\n<p>The mass of steel wool increases when it burns.<\/p>\n<h2 style=\"text-align: center;\">Activity 2 Paper loses mass when it burns<\/h2>\n<h3>Apparatus &amp; Materials<\/h3>\n<ul>\n<li>Self-made weighing Balance<\/li>\n<li>Spirit Lamp<\/li>\n<li>Paper 2<\/li>\n<li>Match Box<\/li>\n<\/ul>\n<h3>Construction<\/h3>\n<ol>\n<li>\u00a0Take two sheets of paper and make two balls of them.<\/li>\n<li>Put the paper balls in the dishes and balance them.<\/li>\n<li>Burn the paper ball at one side of the balance and observe the movement.<\/li>\n<li>The mass of paper ball decreases when it burns.<\/li>\n<\/ol>\n<h3>Scientific Reason<\/h3>\n<h4>Two steel wool balls ignite one ball<\/h4>\n<p>The mass of the burnt steel wool increases because iron changes into iron oxide.<\/p>\n<h4>\u00a0 Two paper balls ignite one ball<\/h4>\n<p>The mass of the burnt paper decreases because carbon in paper changes into carbon dioxide and diffuses in the air.<\/p>\n<h3>Watch Video Does mass change in Chemical Reactions<\/h3>\n<p><iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/zX8k19UXzuE?rel=0\" width=\"420\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p>See Also:<\/p>\n<ul>\n<li><a href=\"http:\/\/paksc.org\/pk\/science-experiments\/chemistry-experiments\/192-flame-reaction-chemistry-experiment-level-elementary\/\" data-wpel-link=\"internal\">Flame reaction, Chemistry Experiment<\/a><\/li>\n<li><a href=\"http:\/\/paksc.org\/pk\/science-experiments\/chemistry-experiments\/193-recrystallization-chemistry-experiment\/\" data-wpel-link=\"internal\">Let\u2019s make the alum crystal, Chemistry Experiment<\/a><\/li>\n<li><a href=\"http:\/\/paksc.org\/pk\/uncategorized\/188-elements-compounds-and-mixtures-chemistry-experiment\/\" data-wpel-link=\"internal\">Elements, Compounds and Mixtures, Chemistry Experiment<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Mass change in chemical reaction Activity 1 Iron gains mass when it burns Apparatus &amp; Materials Steel Wool Spirit Lamp Match Box Tweezers Construction \u00a0Make two balls of steel wool of almost same sizes. Put the iron balls in the dishes and balance them. Take one steel wool ball from the balance. Ignite the spirit&#8230;<\/p>\n","protected":false},"author":9,"featured_media":1413,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[33],"tags":[73,6,22,16,17,13],"class_list":["post-1412","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-chemistry-experiments","tag-chemical-reactions","tag-class-7th-to-8th","tag-fun-science-experiments","tag-hands-on-science-activities","tag-science-club-activities","tag-science-fair-projects"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Does mass 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