{"id":3148,"date":"2023-01-09T09:44:43","date_gmt":"2023-01-09T09:44:43","guid":{"rendered":"https:\/\/10thclass.deltapublications.in\/?page_id=3148"},"modified":"2025-07-25T12:41:15","modified_gmt":"2025-07-25T12:41:15","slug":"s-1-a-chemical-equation","status":"publish","type":"page","link":"https:\/\/10thclass.deltapublications.in\/index.php\/s-1-a-chemical-equation\/","title":{"rendered":"s-1.a Chemical Equation"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color\" style=\"color:#00056d;text-transform:uppercase\"><strong>Chemical Equation<\/strong><\/h2>\n\n\n\n<p class=\"has-text-color has-link-color has-huge-font-size wp-elements-8550df6181cd5d83aa7a08ef336a4ca1\" style=\"color:#74008b\">Key Notes :<\/p>\n\n\n\n<p class=\"has-text-align-center has-text-color has-background has-link-color has-large-font-size wp-elements-3df2ad8a54254504a4d4002592737b06\" style=\"color:#000060;background-color:#dfc816\"><strong>Definition<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>A <strong>chemical equation<\/strong> is a symbolic representation of a chemical reaction using chemical formulas and symbols<\/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=\"500\" src=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2025\/05\/Untitled-design-3.png\" alt=\"\" class=\"wp-image-17778\" style=\"width:415px;height:auto\" srcset=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2025\/05\/Untitled-design-3.png 700w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2025\/05\/Untitled-design-3-300x214.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure><\/div>\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>It shows the reactants (substances that undergo change) and products (new substances formed) in a reaction.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center has-text-color has-background has-link-color has-large-font-size wp-elements-2b58f8b3b397c3ebe227fecb6ac38c95\" style=\"color:#000060;background-color:#dfc816\"><strong>Structure of a Chemical Equation<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Reactants<\/strong> are written on the left-hand side (LHS).<\/li>\n\n\n\n<li><strong>Products<\/strong> are written on the right-hand side (RHS).<\/li>\n\n\n\n<li>An arrow (<strong>\u2192<\/strong>) separates the reactants and products, indicating the direction of the reaction.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-e599999c5ade7a4c460c37555be1cd55\" style=\"color:#000060\">Example:<\/p>\n\n\n\n<p class=\"has-text-align-center has-large-font-size\"><strong>H<sub>2<\/sub> + O<sub>2<\/sub> \u2192 H<sub>2<\/sub>O<\/strong><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"500\" src=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2025\/05\/Water-Molecule.png\" alt=\"\" class=\"wp-image-17780\" style=\"width:408px;height:auto\" srcset=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2025\/05\/Water-Molecule.png 700w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2025\/05\/Water-Molecule-300x214.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-align-center has-text-color has-background has-link-color has-large-font-size wp-elements-055f94628d953d90049b11f007ab4a04\" style=\"color:#000060;background-color:#dfc816\"><strong>Balancing a Chemical Equation<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>A chemical equation must obey the <strong>Law of Conservation of Mass<\/strong> (mass cannot be created or destroyed in a chemical reaction).<\/li>\n\n\n\n<li>The number of atoms of each element on the LHS must equal the number of atoms on the RHS.<\/li>\n\n\n\n<li>Coefficients (numbers placed before formulas) are used to balance the equation.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-e599999c5ade7a4c460c37555be1cd55\" style=\"color:#000060\">Example:<\/p>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-24befce9dbc562b30295493e89e89d8d\" style=\"color:#000060\">Unbalanced: <\/p>\n\n\n\n<p class=\"has-text-align-center has-large-font-size\"><strong>H<sub>2<\/sub> + O<sub>2<\/sub> \u2192 H<sub>2<\/sub>O<\/strong><\/p>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-65c87813f32ae1f26c8f4a623308f1f1\" style=\"color:#000060\">Balanced: <\/p>\n\n\n\n<p class=\"has-text-align-center has-large-font-size\"><strong>2H<sub>2<\/sub> + O<sub>2<\/sub> \u2192 2H<sub>2<\/sub>O<\/strong><\/p>\n\n\n\n<p class=\"has-text-align-center has-text-color has-background has-link-color has-large-font-size wp-elements-ed0794040350daf5b56a163f7cf3a97d\" style=\"color:#000060;background-color:#dfc816\"><strong>Types of Chemical Equations<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Skeletal Equation<\/strong>: Unbalanced equation showing only reactants and products.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center has-large-font-size\"><strong>H2+Cl2\u2192HCl<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Balanced Equation<\/strong>: Follows the Law of Conservation of Mass.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center has-large-font-size\"><strong>H<sub>2<\/sub>&nbsp;+ O<sub>2<\/sub>&nbsp;\u2192 2H<sub>2<\/sub>O<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Ionic Equation<\/strong>: Represents only the ions involved in the reaction.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center has-large-font-size\"><strong>NaCl(aq) + AgNO\u2083(aq) \u2192 AgCl(s) + NaNO\u2083(aq)<\/strong><\/p>\n\n\n\n<p class=\"has-text-align-center has-text-color has-background has-link-color has-large-font-size wp-elements-81a4ae92aaaaac89a3a9d069b13c5882\" style=\"color:#000060;background-color:#dfc816\"><strong>Symbols and Notations in Chemical Equations<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>(s)<\/strong>: Solid<\/li>\n\n\n\n<li><strong>(l)<\/strong>: Liquid<\/li>\n\n\n\n<li><strong>(g)<\/strong>: Gas<\/li>\n\n\n\n<li><strong>(aq)<\/strong>: Aqueous (dissolved in water)<\/li>\n\n\n\n<li><strong>Heat\/\u0394<\/strong>: Heat is supplied<\/li>\n\n\n\n<li><strong>\u2191<\/strong>: Gas is evolved<\/li>\n\n\n\n<li><strong>\u2193<\/strong>: Precipitate is formed<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center has-text-color has-background has-link-color has-large-font-size wp-elements-3bc82a8b3f64da893641f53888af63f3\" style=\"color:#000060;background-color:#dfc816\"><strong>Importance of a Chemical Equation<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Provides a concise way to describe chemical reactions.<\/li>\n\n\n\n<li>Indicates the proportions of reactants and products.<\/li>\n\n\n\n<li>Helps in predicting the outcomes of reactions.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center has-text-color has-background has-link-color has-large-font-size wp-elements-ec8f112b94a29d15c7b0d4d5492a82a8\" style=\"color:#000060;background-color:#dfc816\"><strong>Steps to Balance a Chemical Equation<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Write the unbalanced equation.<\/li>\n\n\n\n<li>List the number of atoms of each element on both sides.<\/li>\n\n\n\n<li>Add coefficients to balance the number of atoms for each element.<\/li>\n\n\n\n<li>Verify that all elements are balanced and the equation follows the Law of Conservation of Mass.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center has-text-color has-background has-link-color has-large-font-size wp-elements-0827fa220654c8c581b2c4d90a7dcb92\" style=\"color:#000060;background-color:#dfc816\"><strong>Limitations of a Chemical Equation<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Does not indicate the reaction conditions (temperature, pressure, catalysts).<\/li>\n\n\n\n<li>Does not show the rate of the reaction.<\/li>\n\n\n\n<li>Does not provide information about the physical states of reactants and products unless mentioned.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center has-text-color has-background has-link-color has-large-font-size wp-elements-43111d355cd966e27c7db649ff7bb15f\" style=\"color:#000060;background-color:#dfc816\"><strong>Examples of Balanced Equations<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Combustion of Methane:<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center has-large-font-size\"><strong>CH<sub>4<\/sub> + 2O<sub>2<\/sub> \u2192 CO<sub>2<\/sub> + 2H<sub>2<\/sub>O<\/strong><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"500\" src=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2025\/05\/Water-Molecule-2.png\" alt=\"\" class=\"wp-image-17782\" style=\"width:392px;height:auto\" srcset=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2025\/05\/Water-Molecule-2.png 700w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2025\/05\/Water-Molecule-2-300x214.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure><\/div>\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Photosynthesis:<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center has-large-font-size\"><strong>6CO<sub>2<\/sub> + 6H<sub>2<\/sub>O \u2192 C<sub>6<\/sub>H<sub>12<\/sub>O<sub>6<\/sub> + 6O<sub>2\u200b<\/sub><\/strong><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"500\" src=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2025\/05\/Water-Molecule-3.png\" alt=\"\" class=\"wp-image-17783\" style=\"width:404px;height:auto\" srcset=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2025\/05\/Water-Molecule-3.png 700w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2025\/05\/Water-Molecule-3-300x214.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-align-center has-text-color has-background has-link-color has-large-font-size wp-elements-fac6377907d6ef0757e4d93b800c6502\" style=\"color:#000060;background-color:#dfc816\"><strong>Applications<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Used in laboratory experiments and industrial processes.<\/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=\"500\" src=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2025\/05\/Water-Molecule-1.png\" alt=\"\" class=\"wp-image-17781\" style=\"width:416px;height:auto\" srcset=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2025\/05\/Water-Molecule-1.png 700w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2025\/05\/Water-Molecule-1-300x214.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure><\/div>\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Helps in stoichiometric calculations to determine the quantities of reactants and products.<\/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=\"500\" src=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2025\/05\/Water-Molecule-4-1.png\" alt=\"\" class=\"wp-image-17785\" style=\"width:432px;height:auto\" srcset=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2025\/05\/Water-Molecule-4-1.png 700w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2025\/05\/Water-Molecule-4-1-300x214.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure><\/div>\n\n\n<div class=\"wp-block-group has-large-font-size\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"has-text-color has-large-font-size\" style=\"color:#d90000\">Let&#8217;s Practice!<\/p>\n<\/div><\/div>\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\/75847\/568\/651\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Worksheet-1-2.png\" alt=\"\" class=\"wp-image-4947\" srcset=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Worksheet-1-2.png 500w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Worksheet-1-2-300x300.png 300w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Worksheet-1-2-150x150.png 150w\" 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\/75859\/381\/939\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Worksheet-1-1-1.png\" alt=\"\" class=\"wp-image-4948\" srcset=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Worksheet-1-1-1.png 500w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Worksheet-1-1-1-300x300.png 300w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Worksheet-1-1-1-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Chemical Equation Key Notes : Definition: Structure of a Chemical Equation: Example: H2 + O2 \u2192 H2O Balancing a Chemical Equation: Example: Unbalanced: H2 + O2 \u2192 H2O Balanced: 2H2 + O2 \u2192 2H2O Types of Chemical Equations: H2+Cl2\u2192HCl H2&nbsp;+ O2&nbsp;\u2192 2H2O NaCl(aq) + AgNO\u2083(aq) \u2192 AgCl(s) + NaNO\u2083(aq) Symbols and Notations in Chemical Equations:<a class=\"more-link\" href=\"https:\/\/10thclass.deltapublications.in\/index.php\/s-1-a-chemical-equation\/\">Continue reading <span class=\"screen-reader-text\">&#8220;s-1.a Chemical Equation&#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,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-3148","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/10thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3148","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/10thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/10thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/10thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/10thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/comments?post=3148"}],"version-history":[{"count":67,"href":"https:\/\/10thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3148\/revisions"}],"predecessor-version":[{"id":18136,"href":"https:\/\/10thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3148\/revisions\/18136"}],"wp:attachment":[{"href":"https:\/\/10thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=3148"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}