{"id":3486,"date":"2025-07-22T10:05:42","date_gmt":"2025-07-22T10:05:42","guid":{"rendered":"https:\/\/odeacademy.in\/?p=3486"},"modified":"2025-07-22T12:54:40","modified_gmt":"2025-07-22T12:54:40","slug":"chemical-reactions-and-equations","status":"publish","type":"post","link":"https:\/\/thequickknowledge.com\/exam\/chemical-reactions-and-equations\/","title":{"rendered":"Chemical Reactions and Equations \u2013 Chemistry | General Science"},"content":{"rendered":"<h4 style=\"text-align: center;\">Chemical Reactions and Equations<\/h4>\n<div class=\"CM8kHf j86kh\" data-hveid=\"CAkQAQ\">\n<div data-expression=\"frac{1}{v} + frac{1}{u} = frac{1}{f}\">\n<hr \/>\n<\/div>\n<\/div>\n<p>Chemical reactions cause change in identity and nature of substances. <strong>Indicators of a chemical reaction<\/strong>: Change in state, Change in color, Evolution of gas, Change in temperature etc.<\/p>\n<p><strong>Types of Chemical Reactions<\/strong><\/p>\n<ul>\n<li><strong>Redox Reaction<\/strong>: 3Fe + 4H\u2082O \u2192 Fe\u2083O\u2084 + 4H\u2082<\/li>\n<li><strong>Combination Reaction<\/strong> &#8211; When two or more substances combine to form a single product.<br \/>\nCaO(s)+H2O(l)\u2192Ca(OH)2 (aq) + Heat<\/li>\n<li><strong>Decomposition Reaction<\/strong> &#8211; A single compound breaks down into <strong data-start=\"1090\" data-end=\"1112\">simpler substances<\/strong>.<\/li>\n<li>(Electrolysis of water produces hydrogen and oxygen gases. Silver chloride turns grey in sunlight, forming silver and chlorine. Silver bromide also decomposes in sunlight similarly.)<br \/>\n(1) CaCO3(s)\u2192 CaO(s)+CO2(g), (2) 2FeSO4 \u2192 Fe2O3 + SO2 + SO3<\/li>\n<li><strong data-start=\"524\" data-end=\"549\">Displacement Reaction<\/strong>: Iron displaces copper from copper sulphate solution. Iron nail turns brown, and the solution\u2019s blue color fades. Zinc and lead are more reactive and can displace copper from compounds.<\/li>\n<li><strong>Double Displacement Reaction<\/strong>: Mixing sodium sulphate and barium chloride forms a white precipitate of barium sulphate.<\/li>\n<li><strong data-start=\"890\" data-end=\"925\">Oxidation and Reduction (Redox)<\/strong>:\n<ul>\n<li><strong data-start=\"932\" data-end=\"949\">Copper powder<\/strong> turns black on heating due to the formation of <strong data-start=\"997\" data-end=\"1017\">copper(II) oxide<\/strong>.<\/li>\n<li data-start=\"930\" data-end=\"1018\">When <strong data-start=\"1029\" data-end=\"1041\">hydrogen<\/strong> is passed over hot copper(II) oxide, it reduces to copper.<\/li>\n<li data-start=\"930\" data-end=\"1018\"><strong>Corrosion:<\/strong> The process where metals (like iron) react with substances such as moisture or acids and deteriorate. It is commonly observed as rusting (iron turns reddish-brown). Silver and copper also tarnish.<\/li>\n<li data-start=\"930\" data-end=\"1018\"><strong data-start=\"508\" data-end=\"521\">Rancidity<\/strong>: Occurs when fats and oils are oxidized, resulting in unpleasant smells and taste. Antioxidants are added to delay rancidity.<\/li>\n<\/ul>\n<\/li>\n<li>\n<p data-start=\"890\" data-end=\"926\">\n<\/li>\n<\/ul>\n<p>Exothermic in nature (releases heat), Calcium hydroxide is used in whitewashing.<\/p>\n<p>g<\/p>\n<hr \/>\n<p><span style=\"color: #ff0000;\"><strong>Related Links<\/strong><\/span><\/p>\n<ul>\n<li><strong>General Science : Questions for Competitive Exams<\/strong> \ud83d\udd17<\/li>\n<\/ul>\n<p><strong><a href=\"https:\/\/thequickknowledge.com\/exam\/general-science\/\">General Science<\/a>, <a href=\"https:\/\/thequickknowledge.com\/exam\/study-materials\/\">Study Materials<\/a>, <a href=\"https:\/\/thequickknowledge.com\/exam\/current-affairs\/\">Current Affairs<\/a>, <a href=\"https:\/\/thequickknowledge.com\/exam\/practice-questions\/\">Practice Questions<\/a>,\u00a0<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Chemical Reactions and Equations Chemical reactions cause change in identity and nature of substances. Indicators of a chemical reaction: Change in state, Change in color, Evolution of gas, Change in temperature etc. Types of Chemical Reactions Redox Reaction: 3Fe + 4H\u2082O \u2192 Fe\u2083O\u2084 + 4H\u2082 Combination Reaction &#8211; When two or more substances combine to [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[137],"tags":[138],"class_list":["post-3486","post","type-post","status-publish","format-standard","hentry","category-general-science","tag-general-science-notes"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Chemical Reactions and Equations Chemical reactions cause change in identity and nature of substances. Indicators of a chemical reaction: Change in state, Change in color, Evolution of gas, Change in temperature etc. Types of Chemical Reactions Redox Reaction: 3Fe + 4H\u2082O \u2192 Fe\u2083O\u2084 + 4H\u2082 Combination Reaction - When two or more substances combine to\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"TQKExam\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/thequickknowledge.com\/exam\/chemical-reactions-and-equations\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.1.1\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"The Quick Knowledge -\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Chemical Reactions and Equations \u2013 Chemistry | General Science - The Quick Knowledge\" \/>\n\t\t<meta property=\"og:description\" content=\"Chemical Reactions and Equations Chemical reactions cause change in identity and nature of substances. Indicators of a chemical reaction: Change in state, Change in color, Evolution of gas, Change in temperature etc. Types of Chemical Reactions Redox Reaction: 3Fe + 4H\u2082O \u2192 Fe\u2083O\u2084 + 4H\u2082 Combination Reaction - When two or more substances combine to\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/thequickknowledge.com\/exam\/chemical-reactions-and-equations\/\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/thequickknowledge.com\/exam\/wp-content\/uploads\/2025\/10\/cropped-TQKLogoExam.png\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/thequickknowledge.com\/exam\/wp-content\/uploads\/2025\/10\/cropped-TQKLogoExam.png\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2025-07-22T10:05:42+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2025-07-22T12:54:40+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Chemical Reactions and Equations \u2013 Chemistry | General Science - The Quick Knowledge\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Chemical Reactions and Equations Chemical reactions cause change in identity and nature of substances. Indicators of a chemical reaction: Change in state, Change in color, Evolution of gas, Change in temperature etc. Types of Chemical Reactions Redox Reaction: 3Fe + 4H\u2082O \u2192 Fe\u2083O\u2084 + 4H\u2082 Combination Reaction - When two or more substances combine to\" \/>\n\t\t<meta name=\"twitter:image\" content=\"https:\/\/thequickknowledge.com\/exam\/wp-content\/uploads\/2025\/10\/cropped-TQKLogoExam.png\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BlogPosting\",\"@id\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/chemical-reactions-and-equations\\\/#blogposting\",\"name\":\"Chemical Reactions and Equations \\u2013 Chemistry | General Science - The Quick Knowledge\",\"headline\":\"Chemical Reactions and Equations \\u2013 Chemistry | General Science\",\"author\":{\"@id\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/author\\\/tikeshwarp23\\\/#author\"},\"publisher\":{\"@id\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/#organization\"},\"image\":{\"@type\":\"ImageObject\",\"url\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/wp-content\\\/uploads\\\/2025\\\/10\\\/cropped-TQKLogoExam.png\",\"@id\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/#articleImage\",\"width\":1419,\"height\":291,\"caption\":\"TQKLogoExam\"},\"datePublished\":\"2025-07-22T10:05:42+00:00\",\"dateModified\":\"2025-07-22T12:54:40+00:00\",\"inLanguage\":\"en-US\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/chemical-reactions-and-equations\\\/#webpage\"},\"isPartOf\":{\"@id\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/chemical-reactions-and-equations\\\/#webpage\"},\"articleSection\":\"General Science, General Science Notes\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/chemical-reactions-and-equations\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/thequickknowledge.com\\\/exam#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/category\\\/general-science\\\/#listItem\",\"name\":\"General Science\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/category\\\/general-science\\\/#listItem\",\"position\":2,\"name\":\"General Science\",\"item\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/category\\\/general-science\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/chemical-reactions-and-equations\\\/#listItem\",\"name\":\"Chemical Reactions and Equations \\u2013 Chemistry | General Science\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/thequickknowledge.com\\\/exam#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/chemical-reactions-and-equations\\\/#listItem\",\"position\":3,\"name\":\"Chemical Reactions and Equations \\u2013 Chemistry | General Science\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/category\\\/general-science\\\/#listItem\",\"name\":\"General Science\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/#organization\",\"name\":\"The Quick Knowledge\",\"url\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"url\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/wp-content\\\/uploads\\\/2025\\\/10\\\/cropped-TQKLogoExam.png\",\"@id\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/chemical-reactions-and-equations\\\/#organizationLogo\",\"width\":1419,\"height\":291,\"caption\":\"TQKLogoExam\"},\"image\":{\"@id\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/chemical-reactions-and-equations\\\/#organizationLogo\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/author\\\/tikeshwarp23\\\/#author\",\"url\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/author\\\/tikeshwarp23\\\/\",\"name\":\"TQKExam\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/chemical-reactions-and-equations\\\/#authorImage\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/c224cd3e6a6fd06ec81ad1ee6728273e9cb600457023900fb616e734dc85d021?s=96&d=mm&r=g\",\"width\":96,\"height\":96,\"caption\":\"TQKExam\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/chemical-reactions-and-equations\\\/#webpage\",\"url\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/chemical-reactions-and-equations\\\/\",\"name\":\"Chemical Reactions and Equations \\u2013 Chemistry | General Science - The Quick Knowledge\",\"description\":\"Chemical Reactions and Equations Chemical reactions cause change in identity and nature of substances. Indicators of a chemical reaction: Change in state, Change in color, Evolution of gas, Change in temperature etc. Types of Chemical Reactions Redox Reaction: 3Fe + 4H\\u2082O \\u2192 Fe\\u2083O\\u2084 + 4H\\u2082 Combination Reaction - When two or more substances combine to\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/chemical-reactions-and-equations\\\/#breadcrumblist\"},\"author\":{\"@id\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/author\\\/tikeshwarp23\\\/#author\"},\"creator\":{\"@id\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/author\\\/tikeshwarp23\\\/#author\"},\"datePublished\":\"2025-07-22T10:05:42+00:00\",\"dateModified\":\"2025-07-22T12:54:40+00:00\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/#website\",\"url\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/\",\"name\":\"The Quick Knowledge\",\"inLanguage\":\"en-US\",\"publisher\":{\"@id\":\"https:\\\/\\\/thequickknowledge.com\\\/exam\\\/#organization\"}}]}\n\t\t<\/script>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"Chemical Reactions and Equations \u2013 Chemistry | General Science - The Quick Knowledge","description":"Chemical Reactions and Equations Chemical reactions cause change in identity and nature of substances. Indicators of a chemical reaction: Change in state, Change in color, Evolution of gas, Change in temperature etc. Types of Chemical Reactions Redox Reaction: 3Fe + 4H\u2082O \u2192 Fe\u2083O\u2084 + 4H\u2082 Combination Reaction - When two or more substances combine to","canonical_url":"https:\/\/thequickknowledge.com\/exam\/chemical-reactions-and-equations\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BlogPosting","@id":"https:\/\/thequickknowledge.com\/exam\/chemical-reactions-and-equations\/#blogposting","name":"Chemical Reactions and Equations \u2013 Chemistry | General Science - The Quick Knowledge","headline":"Chemical Reactions and Equations \u2013 Chemistry | General Science","author":{"@id":"https:\/\/thequickknowledge.com\/exam\/author\/tikeshwarp23\/#author"},"publisher":{"@id":"https:\/\/thequickknowledge.com\/exam\/#organization"},"image":{"@type":"ImageObject","url":"https:\/\/thequickknowledge.com\/exam\/wp-content\/uploads\/2025\/10\/cropped-TQKLogoExam.png","@id":"https:\/\/thequickknowledge.com\/exam\/#articleImage","width":1419,"height":291,"caption":"TQKLogoExam"},"datePublished":"2025-07-22T10:05:42+00:00","dateModified":"2025-07-22T12:54:40+00:00","inLanguage":"en-US","mainEntityOfPage":{"@id":"https:\/\/thequickknowledge.com\/exam\/chemical-reactions-and-equations\/#webpage"},"isPartOf":{"@id":"https:\/\/thequickknowledge.com\/exam\/chemical-reactions-and-equations\/#webpage"},"articleSection":"General Science, General Science Notes"},{"@type":"BreadcrumbList","@id":"https:\/\/thequickknowledge.com\/exam\/chemical-reactions-and-equations\/#breadcrumblist","itemListElement":[{"@type":"ListItem","@id":"https:\/\/thequickknowledge.com\/exam#listItem","position":1,"name":"Home","item":"https:\/\/thequickknowledge.com\/exam","nextItem":{"@type":"ListItem","@id":"https:\/\/thequickknowledge.com\/exam\/category\/general-science\/#listItem","name":"General Science"}},{"@type":"ListItem","@id":"https:\/\/thequickknowledge.com\/exam\/category\/general-science\/#listItem","position":2,"name":"General Science","item":"https:\/\/thequickknowledge.com\/exam\/category\/general-science\/","nextItem":{"@type":"ListItem","@id":"https:\/\/thequickknowledge.com\/exam\/chemical-reactions-and-equations\/#listItem","name":"Chemical Reactions and Equations \u2013 Chemistry | General Science"},"previousItem":{"@type":"ListItem","@id":"https:\/\/thequickknowledge.com\/exam#listItem","name":"Home"}},{"@type":"ListItem","@id":"https:\/\/thequickknowledge.com\/exam\/chemical-reactions-and-equations\/#listItem","position":3,"name":"Chemical Reactions and Equations \u2013 Chemistry | General Science","previousItem":{"@type":"ListItem","@id":"https:\/\/thequickknowledge.com\/exam\/category\/general-science\/#listItem","name":"General Science"}}]},{"@type":"Organization","@id":"https:\/\/thequickknowledge.com\/exam\/#organization","name":"The Quick Knowledge","url":"https:\/\/thequickknowledge.com\/exam\/","logo":{"@type":"ImageObject","url":"https:\/\/thequickknowledge.com\/exam\/wp-content\/uploads\/2025\/10\/cropped-TQKLogoExam.png","@id":"https:\/\/thequickknowledge.com\/exam\/chemical-reactions-and-equations\/#organizationLogo","width":1419,"height":291,"caption":"TQKLogoExam"},"image":{"@id":"https:\/\/thequickknowledge.com\/exam\/chemical-reactions-and-equations\/#organizationLogo"}},{"@type":"Person","@id":"https:\/\/thequickknowledge.com\/exam\/author\/tikeshwarp23\/#author","url":"https:\/\/thequickknowledge.com\/exam\/author\/tikeshwarp23\/","name":"TQKExam","image":{"@type":"ImageObject","@id":"https:\/\/thequickknowledge.com\/exam\/chemical-reactions-and-equations\/#authorImage","url":"https:\/\/secure.gravatar.com\/avatar\/c224cd3e6a6fd06ec81ad1ee6728273e9cb600457023900fb616e734dc85d021?s=96&d=mm&r=g","width":96,"height":96,"caption":"TQKExam"}},{"@type":"WebPage","@id":"https:\/\/thequickknowledge.com\/exam\/chemical-reactions-and-equations\/#webpage","url":"https:\/\/thequickknowledge.com\/exam\/chemical-reactions-and-equations\/","name":"Chemical Reactions and Equations \u2013 Chemistry | General Science - The Quick Knowledge","description":"Chemical Reactions and Equations Chemical reactions cause change in identity and nature of substances. Indicators of a chemical reaction: Change in state, Change in color, Evolution of gas, Change in temperature etc. Types of Chemical Reactions Redox Reaction: 3Fe + 4H\u2082O \u2192 Fe\u2083O\u2084 + 4H\u2082 Combination Reaction - When two or more substances combine to","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/thequickknowledge.com\/exam\/#website"},"breadcrumb":{"@id":"https:\/\/thequickknowledge.com\/exam\/chemical-reactions-and-equations\/#breadcrumblist"},"author":{"@id":"https:\/\/thequickknowledge.com\/exam\/author\/tikeshwarp23\/#author"},"creator":{"@id":"https:\/\/thequickknowledge.com\/exam\/author\/tikeshwarp23\/#author"},"datePublished":"2025-07-22T10:05:42+00:00","dateModified":"2025-07-22T12:54:40+00:00"},{"@type":"WebSite","@id":"https:\/\/thequickknowledge.com\/exam\/#website","url":"https:\/\/thequickknowledge.com\/exam\/","name":"The Quick Knowledge","inLanguage":"en-US","publisher":{"@id":"https:\/\/thequickknowledge.com\/exam\/#organization"}}]},"og:locale":"en_US","og:site_name":"The Quick Knowledge -","og:type":"article","og:title":"Chemical Reactions and Equations \u2013 Chemistry | General Science - The Quick Knowledge","og:description":"Chemical Reactions and Equations Chemical reactions cause change in identity and nature of substances. Indicators of a chemical reaction: Change in state, Change in color, Evolution of gas, Change in temperature etc. Types of Chemical Reactions Redox Reaction: 3Fe + 4H\u2082O \u2192 Fe\u2083O\u2084 + 4H\u2082 Combination Reaction - When two or more substances combine to","og:url":"https:\/\/thequickknowledge.com\/exam\/chemical-reactions-and-equations\/","og:image":"https:\/\/thequickknowledge.com\/exam\/wp-content\/uploads\/2025\/10\/cropped-TQKLogoExam.png","og:image:secure_url":"https:\/\/thequickknowledge.com\/exam\/wp-content\/uploads\/2025\/10\/cropped-TQKLogoExam.png","article:published_time":"2025-07-22T10:05:42+00:00","article:modified_time":"2025-07-22T12:54:40+00:00","twitter:card":"summary_large_image","twitter:title":"Chemical Reactions and Equations \u2013 Chemistry | General Science - The Quick Knowledge","twitter:description":"Chemical Reactions and Equations Chemical reactions cause change in identity and nature of substances. Indicators of a chemical reaction: Change in state, Change in color, Evolution of gas, Change in temperature etc. Types of Chemical Reactions Redox Reaction: 3Fe + 4H\u2082O \u2192 Fe\u2083O\u2084 + 4H\u2082 Combination Reaction - When two or more substances combine to","twitter:image":"https:\/\/thequickknowledge.com\/exam\/wp-content\/uploads\/2025\/10\/cropped-TQKLogoExam.png"},"aioseo_meta_data":{"post_id":"3486","title":null,"description":null,"keywords":null,"keyphrases":{"focus":{"keyphrase":"","score":0,"analysis":{"keyphraseInTitle":{"score":0,"maxScore":9,"error":1}}},"additional":[]},"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":"","og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"BlogPosting","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":"-1","robots_max_videopreview":"-1","robots_max_imagepreview":"large","priority":null,"frequency":"default","local_seo":null,"breadcrumb_settings":null,"limit_modified_date":false,"ai":{"faqs":[],"keyPoints":[],"titles":[],"descriptions":[],"socialPosts":{"email":[],"linkedin":[],"twitter":[],"facebook":[],"instagram":[]}},"created":"2025-07-22 10:05:42","updated":"2025-07-22 13:06:09","seo_analyzer_scan_date":null,"focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/thequickknowledge.com\/exam\" title=\"Home\">Home<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/thequickknowledge.com\/exam\/category\/general-science\/\" title=\"General Science\">General Science<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tChemical Reactions and Equations \u2013 Chemistry | General Science\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/thequickknowledge.com\/exam"},{"label":"General Science","link":"https:\/\/thequickknowledge.com\/exam\/category\/general-science\/"},{"label":"Chemical Reactions and Equations \u2013 Chemistry | General Science","link":"https:\/\/thequickknowledge.com\/exam\/chemical-reactions-and-equations\/"}],"_links":{"self":[{"href":"https:\/\/thequickknowledge.com\/exam\/wp-json\/wp\/v2\/posts\/3486","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/thequickknowledge.com\/exam\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/thequickknowledge.com\/exam\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/thequickknowledge.com\/exam\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/thequickknowledge.com\/exam\/wp-json\/wp\/v2\/comments?post=3486"}],"version-history":[{"count":3,"href":"https:\/\/thequickknowledge.com\/exam\/wp-json\/wp\/v2\/posts\/3486\/revisions"}],"predecessor-version":[{"id":3495,"href":"https:\/\/thequickknowledge.com\/exam\/wp-json\/wp\/v2\/posts\/3486\/revisions\/3495"}],"wp:attachment":[{"href":"https:\/\/thequickknowledge.com\/exam\/wp-json\/wp\/v2\/media?parent=3486"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/thequickknowledge.com\/exam\/wp-json\/wp\/v2\/categories?post=3486"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/thequickknowledge.com\/exam\/wp-json\/wp\/v2\/tags?post=3486"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}