{"id":4008,"date":"2026-03-30T07:29:30","date_gmt":"2026-03-30T07:29:30","guid":{"rendered":"https:\/\/ksquareinstitute.in\/blog\/?p=4008"},"modified":"2026-04-03T13:36:33","modified_gmt":"2026-04-03T13:36:33","slug":"some-basic-concepts-of-chemistry-class-11","status":"publish","type":"post","link":"https:\/\/ksquareinstitute.in\/blog\/some-basic-concepts-of-chemistry-class-11\/","title":{"rendered":"Some Basic Concepts of Chemistry Class 11: Mole Concept &amp; Stoichiometry Guide for NEET"},"content":{"rendered":"\n<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n    <meta charset=\"UTF-8\">\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n    <link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n    <link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin>\n    <link href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Sans:wght@300;400;500;600&#038;family=JetBrains+Mono:wght@400;500;700&#038;family=Plus+Jakarta+Sans:wght@400;600;700;800&#038;display=swap\" rel=\"stylesheet\">\n    <style>\n        :root {\n            --accent: #e8600a;\n            --accent-light: #fff3ec;\n            --accent-mid: #fde3cc;\n            --dark: #111827;\n            --text: #1a1a1a;\n            --text-muted: #4b5563;\n            --border: #e5e7eb;\n            --green-bg: #f0fdf4;\n            --green-border: #16a34a;\n            --blue-bg: #eff6ff;\n            --blue-border: #3b82f6;\n        }\n\n        body {\n            margin: 0;\n            padding: 0;\n            font-family: 'DM Sans', sans-serif;\n            color: var(--text);\n            background: #fff;\n        }\n\n        .inner-content {\n            padding: 0 0px;\n        }\n\n        @media (max-width: 768px) {\n            .inner-content { padding: 0 10px; 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border: 1px solid var(--border); border-radius: 10px; padding: 20px; margin: 30px 0; }\n        .links-title { font-size: 14px; font-weight: 700; color: var(--text-muted); margin-bottom: 15px; display: block; }\n        .links-box a { color: var(--accent); font-weight: 600; text-decoration: none; display: block; margin-bottom: 8px; }\n\n        \/* Download Button *\/\n        .download-wrapper { margin: 20px 0; }\n        .download-btn {\n            background: var(--dark);\n            color: white;\n            display: inline-flex;\n            align-items: center;\n            gap: 10px;\n            padding: 12px 24px;\n            border-radius: 8px;\n            text-decoration: none;\n            font-weight: 600;\n        }\n\n        sub, sup { font-size: 75%; line-height: 0; position: relative; vertical-align: baseline; }\n        sup { top: -0.5em; }\n        sub { bottom: -0.25em; }\n    <\/style>\n<\/head>\n<body>\n\n<div class=\"inner-content\">\n    <div class=\"section-header\">\n        <div class=\"badge\">01<\/div>\n        <h2>Importance and Scope of Some Basic Concepts of Chemistry Class 11<\/h2>\n    <\/div>\n\n    <p>Chemistry is the study of matter, its properties, and the changes it undergoes. As a foundational pillar for NEET preparation, <strong>Some Basic Concepts of Chemistry class 11<\/strong> introduces the fundamental vocabulary of the scientific world. Whether you are aiming for medicine, agriculture, or industrial research, mastering this chapter is non-negotiable. Chemistry is not just an academic subject; it is the &#8220;Central Science&#8221; that connects physics with biology and environmental science.<\/p>\n\n    <p>In our daily lives, chemistry provides the chemical principles required for the production of fertilizers, alkalis, acids, salts, dyes, polymers, and medicines. For NEET students, the specific applications in medicine\u2014such as Cisplatin and Taxol for cancer therapy and AZT (Azidothymidine) for AIDS\u2014are frequently highlighted. The scope is divided into three primary branches: Physical, Inorganic, and Organic Chemistry.<\/p>\n\n    <div class=\"links-box\">\n        <span class=\"links-title\">ESSENTIAL NEET READING<\/span>\n        <a href=\"https:\/\/ksquareinstitute.in\/blog\/organic-chemistry-strategy-neet\/\">Organic Chemistry Strategy for NEET<\/a>\n        <a href=\"https:\/\/ksquareinstitute.in\/blog\/neet-physics-survival-kit-2026\/\">NEET Physics Survival Kit 2026<\/a>\n    <\/div>\n\n    <div class=\"section-header\">\n        <div class=\"badge\">02<\/div>\n        <h2>The Nature and Classification of Matter<\/h2>\n    <\/div>\n\n    <p>Matter is anything that has mass and occupies space. Understanding the <strong>Some Basic Concepts of Chemistry class 11<\/strong> requires a clear distinction between how we classify matter based on physical state and chemical composition. Physical properties like color, odor, melting point, and density can be measured without changing the substance&#8217;s identity, whereas chemical properties like acidity or combustibility require a chemical change.<\/p>\n\n    <div class=\"mini-cards\">\n        <div class=\"card\">\n            <span class=\"card-title\">PHYSICAL STATES<\/span>\n            <p class=\"card-text\">Solids have definite volume and shape. Liquids have definite volume but no definite shape. Gases have neither definite volume nor shape.<\/p>\n        <\/div>\n        <div class=\"card\">\n            <span class=\"card-title\">CHEMICAL COMPOSITION<\/span>\n            <p class=\"card-text\">Pure substances include Elements and Compounds. Mixtures are classified as Homogeneous (uniform) or Heterogeneous (non-uniform).<\/p>\n        <\/div>\n    <\/div>\n\n    <a href=\"https:\/\/courses.ksquare.co.in\/new-courses\/3-mission-180-neet-physics-rankers-batch\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" style=\"display:block; margin-bottom:20px;\">\n        <img decoding=\"async\" src=\"https:\/\/ksquareinstitute.in\/blog\/wp-content\/uploads\/2026\/03\/Course-Poromo-Banner-scaled.png\" alt=\"Mission 180 NEET Physics Rankers Batch - KSquare Career Institute\" style=\"width:100%; height:auto; border-radius:10px; display:block;\">\n    <\/a>\n\n    <div class=\"section-header\">\n        <div class=\"badge\">03<\/div>\n        <h2>The Five Laws of Chemical Combination<\/h2>\n    <\/div>\n\n    <p>The quantitative study of chemical reactions is guided by five fundamental laws. These laws form the structural basis of stoichiometry in <strong>Some Basic Concepts of Chemistry class 11<\/strong>.<\/p>\n\n    <div class=\"table-wrapper\">\n        <table>\n            <thead>\n                <tr>\n                    <th>Law Name<\/th>\n                    <th>Core Principle<\/th>\n                    <th>Key Scientist<\/th>\n                <\/tr>\n            <\/thead>\n            <tbody>\n                <tr>\n                    <td>Law of Conservation of Mass<\/td>\n                    <td>Matter can neither be created nor destroyed<\/td>\n                    <td>Antoine Lavoisier<\/td>\n                <\/tr>\n                <tr>\n                    <td>Law of Definite Proportions<\/td>\n                    <td>Elements are always in fixed mass ratio<\/td>\n                    <td>Joseph Proust<\/td>\n                <\/tr>\n                <tr>\n                    <td>Law of Multiple Proportions<\/td>\n                    <td>Mass ratios form small whole numbers<\/td>\n                    <td>John Dalton<\/td>\n                <\/tr>\n                <tr>\n                    <td>Gay Lussac\u2019s Law<\/td>\n                    <td>Gaseous volumes react in simple ratios<\/td>\n                    <td>Gay Lussac<\/td>\n                <\/tr>\n                <tr>\n                    <td>Avogadro\u2019s Law<\/td>\n                    <td>Equal volumes = Equal molecules (at same T, P)<\/td>\n                    <td>Amedeo Avogadro<\/td>\n                <\/tr>\n            <\/tbody>\n        <\/table>\n    <\/div>\n\n    <div class=\"callout callout-warning\">\n        <span class=\"pill pill-warn\">WARN<\/span>\n        <p>Gay Lussac&#8217;s Law of Gaseous Volumes is only applicable to gases. Do not apply these volume ratios to solids or liquids involved in a reaction.<\/p>\n    <\/div>\n\n    <div class=\"section-header\">\n        <div class=\"badge\">04<\/div>\n        <h2>Dalton\u2019s Atomic Theory and Atomic Masses<\/h2>\n    <\/div>\n\n    <p>Dalton&#8217;s Atomic Theory (1808) proposed that atoms are the ultimate, indivisible particles of matter. While subatomic particles were discovered later, the theory explained the laws of chemical combination effectively. In modern chemistry, we use the Atomic Mass Unit (amu) or unified mass (u) to measure the scale of atoms.<\/p>\n\n    <div class=\"mini-cards\">\n        <div class=\"card\">\n            <span class=\"card-title\">ATOMIC MASS (amu)<\/span>\n            <p class=\"card-text\">Defined as exactly 1\/12th the mass of one Carbon-12 atom. 1 amu = 1.66056 \u00d7 10<sup>-24<\/sup> g.<\/p>\n        <\/div>\n        <div class=\"card\">\n            <span class=\"card-title\">FORMULA MASS<\/span>\n            <p class=\"card-text\">Used for ionic compounds (like NaCl) where discrete molecules do not exist. Sum of atomic masses in the formula unit.<\/p>\n        <\/div>\n    <\/div>\n\n    <div class=\"section-header\">\n        <div class=\"badge\">05<\/div>\n        <h2>Mole Concept and Molar Mass<\/h2>\n    <\/div>\n\n    <p>The mole is the SI unit for the amount of substance. This is the single most important concept in <strong>Some Basic Concepts of Chemistry class 11<\/strong>. One mole contains exactly 6.02214076 \u00d7 10<sup>23<\/sup> elementary entities. This number is known as the Avogadro Constant (N<sub>A<\/sub>).<\/p>\n\n    <span class=\"formula-label\">MOLE CONVERSION FORMULAS<\/span>\n    <div class=\"formula-dark\">\n        Moles (n) = Given Mass (w) \/ Molar Mass (M)<br>\n        Moles (n) = Number of Particles \/ 6.022 \u00d7 10<sup>23<\/sup><br>\n        Moles (n) = Volume of Gas at STP \/ 22.4 L\n    <\/div>\n\n    <div class=\"callout callout-tip\">\n        <span class=\"pill pill-tip\">TIP<\/span>\n        <p>Always convert the given data into Moles first. In stoichiometry, the mole is the common &#8220;currency&#8221; that connects mass, volume, and number of particles.<\/p>\n    <\/div>\n\n    <div class=\"section-header\">\n        <div class=\"badge\">06<\/div>\n        <h2>Percentage Composition and Formula Derivation<\/h2>\n    <\/div>\n\n    <p>Percentage composition helps determine the mass percent of each element in a compound. This leads to the derivation of the Empirical Formula (simplest ratio) and the Molecular Formula (actual ratio).<\/p>\n\n    <span class=\"formula-label\">MASS PERCENT FORMULA<\/span>\n    <div class=\"formula-orange\">\n        Mass % of element = (Mass of that element \/ Total molar mass) \u00d7 100\n    <\/div>\n\n    <span class=\"formula-label\">MOLECULAR VS EMPIRICAL RELATIONSHIP<\/span>\n    <div class=\"formula-dark\">\n        Molecular Formula = n \u00d7 Empirical Formula<br>\n        n = Molar Mass \/ Empirical Formula Mass\n    <\/div>\n\n    <div class=\"download-wrapper\">\n        <a href=\"#\" rel=\"nofollow noopener noreferrer\" class=\"download-btn\">\n            <svg width=\"20\" height=\"20\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v4\"><\/path><polyline points=\"7 10 12 15 17 10\"><\/polyline><line x1=\"12\" y1=\"15\" x2=\"12\" y2=\"3\"><\/line><\/svg>\n            Download Stoichiometry Practice Sheet\n        <\/a>\n    <\/div>\n\n    <div class=\"section-header\">\n        <div class=\"badge\">07<\/div>\n        <h2>Chemical Reactions and Stoichiometry<\/h2>\n    <\/div>\n\n    <p>Stoichiometry allows us to calculate the amount of reactants required or products formed. A balanced chemical equation is mandatory before starting any calculation in <strong>Some Basic Concepts of Chemistry class 11<\/strong>.<\/p>\n\n    <p><strong>Limiting Reagent:<\/strong> The reactant which is completely consumed in a reaction and limits the amount of product formed. To identify it, divide the number of moles of each reactant by its stoichiometric coefficient; the smallest value indicates the limiting reagent.<\/p>\n\n    <a href=\"https:\/\/ksquareinstitute.in\/neet-2026-rank-predictor\/\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" style=\"display:block; margin-bottom:20px;\">\n        <img decoding=\"async\" src=\"https:\/\/ksquareinstitute.in\/blog\/wp-content\/uploads\/2026\/03\/neet-2026-college-and-rank-predictor-scaled.png\" alt=\"NEET 2026 Rank Predictor - KSquare Career Institute\" style=\"width:100%; height:auto; border-radius:10px; display:block;\">\n    <\/a>\n\n    <div class=\"section-header\">\n        <div class=\"badge\">08<\/div>\n        <h2>Concentration of Solutions<\/h2>\n    <\/div>\n\n    <p>For NEET, mastering the different ways to express concentration is vital. These methods describe how much solute is dissolved in a specific amount of solvent or solution.<\/p>\n\n    <div class=\"mini-cards\">\n        <div class=\"card\">\n            <span class=\"card-title\">MOLARITY (M)<\/span>\n            <p class=\"card-text\">Moles of solute per liter of solution. M = n \/ V(L). Note: Temperature dependent.<\/p>\n        <\/div>\n        <div class=\"card\">\n            <span class=\"card-title\">MOLALITY (m)<\/span>\n            <p class=\"card-text\">Moles of solute per kg of solvent. m = n \/ Mass(kg). Note: Temperature independent.<\/p>\n        <\/div>\n    <\/div>\n\n    <span class=\"formula-label\">DILUTION AND MIXING<\/span>\n    <div class=\"formula-orange\">\n        Dilution: M<sub>1<\/sub>V<sub>1<\/sub> = M<sub>2<\/sub>V<sub>2<\/sub><br>\n        Mixing: M<sub>mix<\/sub> = (M<sub>1<\/sub>V<sub>1<\/sub> + M<sub>2<\/sub>V<sub>2<\/sub>) \/ (V<sub>1<\/sub> + V<sub>2<\/sub>)\n    <\/div>\n\n    <div class=\"links-box\">\n        <span class=\"links-title\">RELATED BIOLOGY GUIDES<\/span>\n        <a href=\"https:\/\/ksquareinstitute.in\/blog\/neet-biology-tricks-for-exams\/\">NEET Biology Tricks for Exams<\/a>\n        <a href=\"https:\/\/ksquareinstitute.in\/blog\/score-340-in-neet-biology\/\">Score 340 in NEET Biology<\/a>\n        <a href=\"https:\/\/ksquareinstitute.in\/blog\/top-10-tricky-neet-biology-diagrams\/\">Top 10 Tricky NEET Biology Diagrams<\/a>\n    <\/div>\n\n    <div class=\"section-header\">\n        <div class=\"badge\">09<\/div>\n        <h2>Real Strategy: How to Study This Chapter<\/h2>\n    <\/div>\n\n    <p>The <strong>Some Basic Concepts of Chemistry class 11<\/strong> chapter is the foundation of physical chemistry. If your basics are weak here, the entire subject will feel overwhelming later. Follow this proven roadmap:<\/p>\n    <ul>\n        <li><strong>Foundation over Speed:<\/strong> Understand the concept of &#8220;Relative Mass&#8221; before jumping into numericals.<\/li>\n        <li><strong>The 70\/30 Rule:<\/strong> Spend 70% of your time on numerical practice and 30% on theory. This is a calculation-heavy chapter.<\/li>\n        <li><strong>NCERT is King:<\/strong> Every line in NCERT regarding laws and definitions is potential NEET MCQ material.<\/li>\n        <li><strong>Practice Limiting Reagent:<\/strong> This is where 90% of students make mistakes. Practice at least 20 different reactions.<\/li>\n    <\/ul>\n\n    <div class=\"revision-box\">\n        <h3>Revision Checklist: Key Facts<\/h3>\n        <ul>\n            <li>1 amu = 1.66 \u00d7 10<sup>-24<\/sup> g<\/li>\n            <li>Avogadro Number (N<sub>A<\/sub>) = 6.022 \u00d7 10<sup>23<\/sup><\/li>\n            <li>Molar Volume at STP = 22.4 L (approx) or 22.7 L (modern)<\/li>\n            <li>Molarity changes with temperature; Molality does not.<\/li>\n            <li>Mass % = (Mass of Solute \/ Mass of Solution) \u00d7 100<\/li>\n            <li>Law of Conservation of Mass: Reactant Mass = Product Mass<\/li>\n            <li>Empirical Formula represents the simplest whole number ratio.<\/li>\n            <li>n = Molar Mass \/ Empirical Formula Mass<\/li>\n            <li>Dilution formula: M<sub>1<\/sub>V<sub>1<\/sub> = M<sub>2<\/sub>V<sub>2<\/sub><\/li>\n            <li>Cisplatin and Taxol are anti-cancer drugs.<\/li>\n        <\/ul>\n    <\/div>\n\n    <div class=\"faq-section\">\n        <div class=\"section-header\">\n            <div class=\"badge\">10<\/div>\n            <h2>Frequently Asked Questions<\/h2>\n        <\/div>\n\n        <details>\n            <summary>Why is molality preferred over molarity for precise experiments?<\/summary>\n            <div class=\"faq-content\">Molality involves mass, which is independent of temperature. Molarity involves volume, which changes with temperature, affecting the precision of the concentration.<\/div>\n        <\/details>\n        <details>\n            <summary>What is the difference between a compound and a mixture?<\/summary>\n            <div class=\"faq-content\">A compound consists of elements chemically bonded in a fixed ratio. A mixture contains substances physically mixed in any ratio, retaining their individual properties.<\/div>\n        <\/details>\n        <details>\n            <summary>How do I find the limiting reagent in a reaction?<\/summary>\n            <div class=\"faq-content\">Convert the given masses to moles. Divide the moles by their respective stoichiometric coefficients. The reactant with the smallest value is the limiting reagent.<\/div>\n        <\/details>\n        <details>\n            <summary>What is 1 atomic mass unit (amu)?<\/summary>\n            <div class=\"faq-content\">It is a mass unit equal to exactly 1\/12th the mass of one Carbon-12 atom.<\/div>\n        <\/details>\n        <details>\n            <summary>Is significant figure calculation important for NEET?<\/summary>\n            <div class=\"faq-content\">Yes. NEET occasionally asks direct questions on rounding off and identifying significant figures in scientific measurements.<\/div>\n        <\/details>\n        <details>\n            <summary>What is the molar volume of a gas at STP?<\/summary>\n            <div class=\"faq-content\">At standard temperature (0\u00b0C) and pressure (1 atm), 1 mole of an ideal gas occupies 22.4 liters.<\/div>\n        <\/details>\n    <\/div>\n\n    <div class=\"cta\">\n        <h2>Crack NEET 2026 with Experts<\/h2>\n        <p>Master Physical Chemistry with our specialized rank-booster programs. Get personalized mentorship and high-yield study material today.<\/p>\n        <div class=\"cta-btns\">\n            <a href=\"https:\/\/courses.ksquare.co.in\/new-courses\/3-mission-180-neet-physics-rankers-batch\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" class=\"btn-solid\">Join Mission 180 Batch<\/a>\n            <a href=\"https:\/\/ksquareinstitute.in\/free-study-material\/\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" class=\"btn-outline\">Free Study Material<\/a>\n        <\/div>\n    <\/div>\n<\/div>\n\n<\/body>\n<\/html>\n\n\n\n<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n  <meta charset=\"UTF-8\">\n  <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n  <title>Table of Contents \u2014 Chemistry Class 11<\/title>\n  \n  <!-- Google Fonts Import -->\n  <link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n  <link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin>\n  <link href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Sans:ital,opsz,wght@0,9..40,100..1000;1,9..40,100..1000&#038;family=Plus+Jakarta+Sans:ital,wght@0,200..800;1,200..800&#038;display=swap\" rel=\"stylesheet\">\n  \n  <style>\n    \/* Scoped wrapper using a unique ID to prevent CSS conflicts. *\/\n    #chemistry-toc-wrapper {\n      font-family: 'DM Sans', sans-serif;\n      width: 100%;\n      margin: 0;\n      padding: 60px 0;\n      color: #111;\n      background: #fff;\n      -webkit-font-smoothing: antialiased;\n    }\n\n    #chemistry-toc-wrapper .container-inner {\n      width: 100%;\n      margin: 0 auto;\n      padding: 0; \/* No left\/right padding for edge-to-edge look *\/\n    }\n\n    #chemistry-toc-wrapper h1 {\n      font-family: 'Plus Jakarta Sans', sans-serif;\n      font-size: 0.85rem;\n      font-weight: 700;\n      color: #71717a;\n      margin: 0 0 8px;\n      letter-spacing: 0.1em;\n      text-transform: uppercase;\n      padding-left: 16px; \n    }\n\n    #chemistry-toc-wrapper h2 {\n      font-family: 'Plus Jakarta Sans', sans-serif;\n      font-size: 2.25rem;\n      font-weight: 800;\n      margin: 0 0 48px;\n      letter-spacing: -0.02em;\n      color: #09090b;\n      padding-left: 16px;\n    }\n\n    #chemistry-toc-wrapper table {\n      width: 100%;\n      border-collapse: collapse;\n      border-spacing: 0;\n      border-top: 1px solid #e4e4e7;\n      border-bottom: 1px solid #e4e4e7;\n    }\n\n    #chemistry-toc-wrapper tr {\n      border-bottom: 1px solid #e4e4e7;\n      transition: all 0.2s ease;\n    }\n\n    #chemistry-toc-wrapper tr:hover {\n      background-color: #f8fafc;\n    }\n\n    #chemistry-toc-wrapper tr:last-child {\n      border-bottom: none;\n    }\n\n    #chemistry-toc-wrapper td {\n      padding: 24px 16px;\n      vertical-align: middle;\n      font-size: 1.05rem;\n      font-weight: 500;\n      border-right: 1px solid #e4e4e7;\n    }\n\n    #chemistry-toc-wrapper td:last-child {\n      border-right: none;\n    }\n\n    \/* First column (Numbers) alignment and padding *\/\n    #chemistry-toc-wrapper td:first-child {\n      color: #a1a1aa;\n      font-size: 0.9rem;\n      width: 70px;\n      font-weight: 400;\n      font-variant-numeric: tabular-nums;\n      text-align: center;\n      padding-left: 10px;\n    }\n\n    \/* Middle column (Chapter Name) alignment and padding *\/\n    #chemistry-toc-wrapper td:nth-child(2) {\n      padding-left: 24px;\n      color: #18181b;\n    }\n\n    \/* Last column (Button) alignment and padding *\/\n    #chemistry-toc-wrapper td:last-child {\n      text-align: right;\n      width: 180px;\n      padding-right: 16px;\n    }\n\n    \/* Button Styling *\/\n    #chemistry-toc-wrapper a.go {\n      display: inline-block;\n      font-family: 'Plus Jakarta Sans', sans-serif;\n      font-size: 0.75rem;\n      font-weight: 800;\n      padding: 12px 24px;\n      border: 1.5px solid #18181b;\n      border-radius: 8px;\n      color: #18181b;\n      text-decoration: none;\n      letter-spacing: 0.05em;\n      text-transform: uppercase;\n      transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);\n      white-space: nowrap;\n    }\n\n    #chemistry-toc-wrapper a.go:hover {\n      background: #18181b;\n      color: #ffffff;\n      transform: translateY(-2px);\n      box-shadow: 0 4px 12px rgba(24, 24, 27, 0.15);\n    }\n\n    \/* Responsive adjustments *\/\n    @media (max-width: 768px) {\n      #chemistry-toc-wrapper h2 {\n        font-size: 1.75rem;\n        margin-bottom: 32px;\n      }\n      #chemistry-toc-wrapper td {\n        padding: 18px 12px;\n        font-size: 0.95rem;\n      }\n    }\n  <\/style>\n<\/head>\n<body>\n\n<div id=\"chemistry-toc-wrapper\">\n  <div class=\"container-inner\">\n    <h1>Table of Contents<\/h1>\n    <h2>Chemistry &mdash; Class 11<\/h2>\n    \n    <table>\n      <tr><td>01<\/td><td>Some Basic Concepts of Chemistry<\/td><td><a class=\"go\" href=\"https:\/\/ksquareinstitute.in\/blog\/some-basic-concepts-of-chemistry-class-11\" target=\"_blank\">Go to page<\/a><\/td><\/tr>\n      <tr><td>02<\/td><td>Structure of Atom<\/td><td><a class=\"go\" href=\"https:\/\/ksquareinstitute.in\/blog\/structure-of-atom-class-11\" target=\"_blank\">Go to page<\/a><\/td><\/tr>\n      <tr><td>03<\/td><td>Classification of Elements and Periodicity<\/td><td><a class=\"go\" href=\"https:\/\/ksquareinstitute.in\/blog\/periodic-table-class-11-notes-pdf\" target=\"_blank\">Go to page<\/a><\/td><\/tr>\n      <tr><td>04<\/td><td>Chemical Bonding and Molecular Structure<\/td><td><a class=\"go\" href=\"https:\/\/ksquareinstitute.in\/blog\/chemical-bonding-class-11-notes-pdf\" target=\"_blank\">Go to page<\/a><\/td><\/tr>\n      <tr><td>05<\/td><td>Thermodynamics<\/td><td><a class=\"go\" href=\"https:\/\/ksquareinstitute.in\/blog\/thermodynamics-chemistry-class-11-notes-pdf\" target=\"_blank\">Go to page<\/a><\/td><\/tr>\n      <tr><td>06<\/td><td>Equilibrium<\/td><td><a class=\"go\" href=\"https:\/\/ksquareinstitute.in\/blog\/equilibrium-chemistry-class-11-pdf\" target=\"_blank\">Go to page<\/a><\/td><\/tr>\n      <tr><td>07<\/td><td>Redox Reactions<\/td><td><a class=\"go\" href=\"https:\/\/ksquareinstitute.in\/blog\/redox-reactions-chemistry-class-11-pdf\" target=\"_blank\">Go to page<\/a><\/td><\/tr>\n      <tr><td>08<\/td><td>Organic Chemistry &mdash; Basic Principles<\/td><td><a class=\"go\" href=\"https:\/\/ksquareinstitute.in\/blog\/organic-chemistry-basic-principles-class-11\" target=\"_blank\">Go to page<\/a><\/td><\/tr>\n      <tr><td>09<\/td><td>Hydrocarbons<\/td><td><a class=\"go\" href=\"https:\/\/ksquareinstitute.in\/blog\/hydrocarbons-class-11-notes-pdf\" target=\"_blank\">Go to page<\/a><\/td><\/tr>\n    <\/table>\n  <\/div>\n<\/div>\n\n<\/body>\n<\/html>\n","protected":false},"excerpt":{"rendered":"<p>01 Importance and Scope of Some Basic Concepts of Chemistry Class 11 Chemistry is the study of matter, its properties, and the changes it undergoes. As a foundational pillar for NEET preparation, Some Basic Concepts of Chemistry class 11 introduces the fundamental vocabulary of the scientific world. Whether you are aiming for medicine, agriculture, or [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[127],"tags":[299,300,296,297,298],"class_list":["post-4008","post","type-post","status-publish","format-standard","hentry","category-free-study-material","tag-chemistry-class-11-notes","tag-laws-of-chemical-combination","tag-mole-concept-class-11","tag-some-basic-concepts-of-chemistry-class-11","tag-stoichiometry-class-11"],"blocksy_meta":{"page_structure_type":"type-1","styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":6}},"_links":{"self":[{"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/posts\/4008","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/comments?post=4008"}],"version-history":[{"count":4,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/posts\/4008\/revisions"}],"predecessor-version":[{"id":4287,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/posts\/4008\/revisions\/4287"}],"wp:attachment":[{"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/media?parent=4008"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/categories?post=4008"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/tags?post=4008"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}