{"id":3830,"date":"2023-01-09T10:37:41","date_gmt":"2023-01-09T10:37:41","guid":{"rendered":"https:\/\/7thclass.deltapublications.in\/?page_id=3830"},"modified":"2025-08-13T06:57:09","modified_gmt":"2025-08-13T06:57:09","slug":"s-5-a-acids-and-bases","status":"publish","type":"page","link":"https:\/\/7thclass.deltapublications.in\/index.php\/s-5-a-acids-and-bases\/","title":{"rendered":"S-5.a Acids And Bases"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color\" style=\"color:#00056d;text-transform:uppercase\"><strong>Acids and Bases<\/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<iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/_rShwhRPk9I?si=gyILdlan6MCUnMPS&#038;rel=0\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n\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-large-font-size\" style=\"color:#000060\"><strong>Understanding Acids and Bases:<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Acids:<\/strong> Substances that release hydrogen ions (H\u207a) when dissolved in water. They taste sour and can turn blue litmus paper red. Examples include lemon juice and vinegar.<\/li>\n\n\n\n<li><strong>Bases:<\/strong> Substances that release hydroxide ions (OH\u207b) when dissolved in water. They taste bitter and can turn red litmus paper blue. Examples include baking soda and soap.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"423\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2024\/08\/6f3a1cdf-9b33-4b5f-b956-2a6620a4a8b6.png\" alt=\"\" class=\"wp-image-13666\" style=\"aspect-ratio:1.6548463356973995;width:430px;height:auto\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2024\/08\/6f3a1cdf-9b33-4b5f-b956-2a6620a4a8b6.png 700w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2024\/08\/6f3a1cdf-9b33-4b5f-b956-2a6620a4a8b6-300x181.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure><\/div>\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-large-font-size\" style=\"color:#000060\"><strong>Properties of Acids:<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Sour taste.<\/li>\n\n\n\n<li>Can conduct electricity in solution.<\/li>\n\n\n\n<li>React with metals to produce hydrogen gas.<\/li>\n\n\n\n<li>Examples: Citric acid in citrus fruits, acetic acid in vinegar.<\/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-large-font-size\" style=\"color:#000060\"><strong>Properties of Bases:<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Bitter taste.<\/li>\n\n\n\n<li>Slippery or soapy feel.<\/li>\n\n\n\n<li>Can conduct electricity in solution.<\/li>\n\n\n\n<li>Examples: Sodium hydroxide in drain cleaners, magnesium hydroxide in antacids.<\/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-large-font-size\" style=\"color:#000060\"><strong>pH Scale:<\/strong><\/h3>\n\n\n\n<p class=\"has-large-font-size\"><strong>pH Scale:<\/strong> Measures how acidic or basic a substance is, ranging from 0 to 14.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>pH &lt; 7:<\/strong> Acidic.<\/li>\n\n\n\n<li><strong>pH = 7:<\/strong> Neutral (e.g., water).<\/li>\n\n\n\n<li><strong>pH &gt; 7:<\/strong> Basic (alkaline).<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"650\" height=\"273\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2024\/08\/image-1.png\" alt=\"\" class=\"wp-image-13669\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2024\/08\/image-1.png 650w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2024\/08\/image-1-300x126.png 300w\" sizes=\"auto, (max-width: 650px) 100vw, 650px\" \/><\/figure>\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-large-font-size\" style=\"color:#000060\"><strong>Indicators:<\/strong><\/h3>\n\n\n\n<p class=\"has-large-font-size\"><strong>Litmus Paper:<\/strong> Changes color to indicate acidity or basicity.<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Red Litmus Paper:<\/strong> Turns blue in a base, stays red in an acid.<\/li>\n\n\n\n<li><strong>Blue Litmus Paper:<\/strong> Turns red in an acid, stays blue in a base.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-large-font-size\"><strong>Universal Indicator:<\/strong> Changes color to show the pH level of a solution.<\/p>\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-large-font-size\" style=\"color:#000060\"><strong>Neutralization Reaction:<\/strong><\/h3>\n\n\n\n<p class=\"has-large-font-size\"><strong>Neutralization:<\/strong> A chemical reaction between an acid and a base that produces salt and water.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-large-font-size\">Example: Hydrochloric acid (HCl) + Sodium hydroxide (NaOH) \u2192 Sodium chloride (NaCl) + Water (H\u2082O).<\/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-large-font-size\" style=\"color:#000060\"><strong>Safety:<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Always handle acids and bases with care.<\/li>\n\n\n\n<li>Wear safety goggles and gloves.<\/li>\n\n\n\n<li>Follow proper procedures for dilution and disposal.<\/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-large-font-size\" style=\"color:#000060\"><strong>Everyday Examples:<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Acids:<\/strong> Citrus fruits, soda, and yogurt.<\/li>\n\n\n\n<li><strong>Bases:<\/strong> Toothpaste, baking soda, and ammonia.<\/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\/76678\/211\/791\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-21.png\" alt=\"\" class=\"wp-image-5903\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-21.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-21-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-21-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-21-400x400.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\/58940\/502\/624\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-17.png\" alt=\"\" class=\"wp-image-5904\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-17.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-17-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-17-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-17-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Acids and Bases Key Notes : Understanding Acids and Bases: Properties of Acids: Properties of Bases: pH Scale: pH Scale: Measures how acidic or basic a substance is, ranging from 0 to 14. Indicators: Litmus Paper: Changes color to indicate acidity or basicity. Universal Indicator: Changes color to show the pH level of a solution.<a class=\"more-link\" href=\"https:\/\/7thclass.deltapublications.in\/index.php\/s-5-a-acids-and-bases\/\">Continue reading <span class=\"screen-reader-text\">&#8220;S-5.a Acids And Bases&#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-3830","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Acids and Bases Key Notes : Understanding Acids and Bases: Acids: Substances that release hydrogen ions (H\u207a) when dissolved in water. They taste sour and can turn blue litmus paper red. Examples include lemon juice and vinegar. Bases: Substances that release hydroxide ions (OH\u207b) when dissolved in water. They taste bitter and can turn red\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/7thclass.deltapublications.in\/index.php\/s-5-a-acids-and-bases\/\" \/>\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=\"7th Class - WHERE KNOWLEDGE MATTERS\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"S-5.a Acids And Bases - 7th Class\" \/>\n\t\t<meta property=\"og:description\" content=\"Acids and Bases Key Notes : Understanding Acids and Bases: Acids: Substances that release hydrogen ions (H\u207a) when dissolved in water. They taste sour and can turn blue litmus paper red. Examples include lemon juice and vinegar. Bases: Substances that release hydroxide ions (OH\u207b) when dissolved in water. They taste bitter and can turn red\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/7thclass.deltapublications.in\/index.php\/s-5-a-acids-and-bases\/\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/cropped-Untitled_design__42_-removebg-preview.png\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/cropped-Untitled_design__42_-removebg-preview.png\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2023-01-09T10:37:41+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2025-08-13T06:57:09+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary\" \/>\n\t\t<meta name=\"twitter:title\" content=\"S-5.a Acids And Bases - 7th Class\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Acids and Bases Key Notes : Understanding Acids and Bases: Acids: Substances that release hydrogen ions (H\u207a) when dissolved in water. They taste sour and can turn blue litmus paper red. Examples include lemon juice and vinegar. Bases: Substances that release hydroxide ions (OH\u207b) when dissolved in water. They taste bitter and can turn red\" \/>\n\t\t<meta name=\"twitter:image\" content=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/cropped-Untitled_design__42_-removebg-preview.png\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/7thclass.deltapublications.in\\\/index.php\\\/s-5-a-acids-and-bases\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/7thclass.deltapublications.in#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/7thclass.deltapublications.in\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/7thclass.deltapublications.in\\\/index.php\\\/s-5-a-acids-and-bases\\\/#listItem\",\"name\":\"S-5.a Acids And Bases\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/7thclass.deltapublications.in\\\/index.php\\\/s-5-a-acids-and-bases\\\/#listItem\",\"position\":2,\"name\":\"S-5.a Acids And Bases\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/7thclass.deltapublications.in#listItem\",\"name\":\"Home\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/7thclass.deltapublications.in\\\/#organization\",\"name\":\"7th Class\",\"description\":\"WHERE KNOWLEDGE MATTERS\",\"url\":\"https:\\\/\\\/7thclass.deltapublications.in\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"url\":\"https:\\\/\\\/7thclass.deltapublications.in\\\/wp-content\\\/uploads\\\/2023\\\/02\\\/cropped-Untitled_design__42_-removebg-preview.png\",\"@id\":\"https:\\\/\\\/7thclass.deltapublications.in\\\/index.php\\\/s-5-a-acids-and-bases\\\/#organizationLogo\",\"width\":240,\"height\":240},\"image\":{\"@id\":\"https:\\\/\\\/7thclass.deltapublications.in\\\/index.php\\\/s-5-a-acids-and-bases\\\/#organizationLogo\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/7thclass.deltapublications.in\\\/index.php\\\/s-5-a-acids-and-bases\\\/#webpage\",\"url\":\"https:\\\/\\\/7thclass.deltapublications.in\\\/index.php\\\/s-5-a-acids-and-bases\\\/\",\"name\":\"S-5.a Acids And Bases - 7th Class\",\"description\":\"Acids and Bases Key Notes : Understanding Acids and Bases: Acids: Substances that release hydrogen ions (H\\u207a) when dissolved in water. They taste sour and can turn blue litmus paper red. Examples include lemon juice and vinegar. Bases: Substances that release hydroxide ions (OH\\u207b) when dissolved in water. They taste bitter and can turn red\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/7thclass.deltapublications.in\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/7thclass.deltapublications.in\\\/index.php\\\/s-5-a-acids-and-bases\\\/#breadcrumblist\"},\"datePublished\":\"2023-01-09T10:37:41+00:00\",\"dateModified\":\"2025-08-13T06:57:09+00:00\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/7thclass.deltapublications.in\\\/#website\",\"url\":\"https:\\\/\\\/7thclass.deltapublications.in\\\/\",\"name\":\"7th Class\",\"description\":\"WHERE KNOWLEDGE MATTERS\",\"inLanguage\":\"en-US\",\"publisher\":{\"@id\":\"https:\\\/\\\/7thclass.deltapublications.in\\\/#organization\"}}]}\n\t\t<\/script>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"S-5.a Acids And Bases - 7th Class","description":"Acids and Bases Key Notes : Understanding Acids and Bases: Acids: Substances that release hydrogen ions (H\u207a) when dissolved in water. They taste sour and can turn blue litmus paper red. Examples include lemon juice and vinegar. Bases: Substances that release hydroxide ions (OH\u207b) when dissolved in water. They taste bitter and can turn red","canonical_url":"https:\/\/7thclass.deltapublications.in\/index.php\/s-5-a-acids-and-bases\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/7thclass.deltapublications.in\/index.php\/s-5-a-acids-and-bases\/#breadcrumblist","itemListElement":[{"@type":"ListItem","@id":"https:\/\/7thclass.deltapublications.in#listItem","position":1,"name":"Home","item":"https:\/\/7thclass.deltapublications.in","nextItem":{"@type":"ListItem","@id":"https:\/\/7thclass.deltapublications.in\/index.php\/s-5-a-acids-and-bases\/#listItem","name":"S-5.a Acids And Bases"}},{"@type":"ListItem","@id":"https:\/\/7thclass.deltapublications.in\/index.php\/s-5-a-acids-and-bases\/#listItem","position":2,"name":"S-5.a Acids And Bases","previousItem":{"@type":"ListItem","@id":"https:\/\/7thclass.deltapublications.in#listItem","name":"Home"}}]},{"@type":"Organization","@id":"https:\/\/7thclass.deltapublications.in\/#organization","name":"7th Class","description":"WHERE KNOWLEDGE MATTERS","url":"https:\/\/7thclass.deltapublications.in\/","logo":{"@type":"ImageObject","url":"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/cropped-Untitled_design__42_-removebg-preview.png","@id":"https:\/\/7thclass.deltapublications.in\/index.php\/s-5-a-acids-and-bases\/#organizationLogo","width":240,"height":240},"image":{"@id":"https:\/\/7thclass.deltapublications.in\/index.php\/s-5-a-acids-and-bases\/#organizationLogo"}},{"@type":"WebPage","@id":"https:\/\/7thclass.deltapublications.in\/index.php\/s-5-a-acids-and-bases\/#webpage","url":"https:\/\/7thclass.deltapublications.in\/index.php\/s-5-a-acids-and-bases\/","name":"S-5.a Acids And Bases - 7th Class","description":"Acids and Bases Key Notes : Understanding Acids and Bases: Acids: Substances that release hydrogen ions (H\u207a) when dissolved in water. They taste sour and can turn blue litmus paper red. Examples include lemon juice and vinegar. Bases: Substances that release hydroxide ions (OH\u207b) when dissolved in water. They taste bitter and can turn red","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/7thclass.deltapublications.in\/#website"},"breadcrumb":{"@id":"https:\/\/7thclass.deltapublications.in\/index.php\/s-5-a-acids-and-bases\/#breadcrumblist"},"datePublished":"2023-01-09T10:37:41+00:00","dateModified":"2025-08-13T06:57:09+00:00"},{"@type":"WebSite","@id":"https:\/\/7thclass.deltapublications.in\/#website","url":"https:\/\/7thclass.deltapublications.in\/","name":"7th Class","description":"WHERE KNOWLEDGE MATTERS","inLanguage":"en-US","publisher":{"@id":"https:\/\/7thclass.deltapublications.in\/#organization"}}]},"og:locale":"en_US","og:site_name":"7th Class - WHERE KNOWLEDGE MATTERS","og:type":"article","og:title":"S-5.a Acids And Bases - 7th Class","og:description":"Acids and Bases Key Notes : Understanding Acids and Bases: Acids: Substances that release hydrogen ions (H\u207a) when dissolved in water. They taste sour and can turn blue litmus paper red. Examples include lemon juice and vinegar. Bases: Substances that release hydroxide ions (OH\u207b) when dissolved in water. They taste bitter and can turn red","og:url":"https:\/\/7thclass.deltapublications.in\/index.php\/s-5-a-acids-and-bases\/","og:image":"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/cropped-Untitled_design__42_-removebg-preview.png","og:image:secure_url":"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/cropped-Untitled_design__42_-removebg-preview.png","article:published_time":"2023-01-09T10:37:41+00:00","article:modified_time":"2025-08-13T06:57:09+00:00","twitter:card":"summary","twitter:title":"S-5.a Acids And Bases - 7th Class","twitter:description":"Acids and Bases Key Notes : Understanding Acids and Bases: Acids: Substances that release hydrogen ions (H\u207a) when dissolved in water. They taste sour and can turn blue litmus paper red. Examples include lemon juice and vinegar. Bases: Substances that release hydroxide ions (OH\u207b) when dissolved in water. They taste bitter and can turn red","twitter:image":"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/cropped-Untitled_design__42_-removebg-preview.png"},"aioseo_meta_data":{"post_id":"3830","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":{"id":"#aioseo-web-page-6735d0283dd17","slug":"web-page","graphName":"WebPage","label":"Web Page","properties":{"type":"WebPage","name":"","description":""}}},"graphName":"WebPage","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":"{\"article\":{\"articleType\":\"BlogPosting\"},\"course\":{\"name\":\"\",\"description\":\"\",\"provider\":\"\"},\"faq\":{\"pages\":[]},\"product\":{\"reviews\":[]},\"recipe\":{\"ingredients\":[],\"instructions\":[],\"keywords\":[]},\"software\":{\"reviews\":[],\"operatingSystems\":[]},\"webPage\":{\"webPageType\":\"WebPage\"}}","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":null,"created":"2023-01-09 10:37:41","updated":"2025-09-23 10:34:48","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:\/\/7thclass.deltapublications.in\" title=\"Home\">Home<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tS-5.a Acids And Bases\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/7thclass.deltapublications.in"},{"label":"S-5.a Acids And Bases","link":"https:\/\/7thclass.deltapublications.in\/index.php\/s-5-a-acids-and-bases\/"}],"_links":{"self":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3830","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=3830"}],"version-history":[{"count":24,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3830\/revisions"}],"predecessor-version":[{"id":16716,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3830\/revisions\/16716"}],"wp:attachment":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=3830"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}