# NCERT Solutions for Class 11 Chemistry Chapter 1 Some Basic Concepts of Chemistry

NCERT Solutions for Class 11 Chemistry Chapter 1 Some Basic Concepts of Chemistry

NCERT Class 11 Chemistry chapter 1 Some Basic Concepts of Chemistry is one of the important chapters and consists of important concepts that are often asked in class 11 final examination. In this chapter, there are 36 questions in the exercise. The NCERT Solutions for Class 11 Chemistry Chapter 1 Some Basic Concepts of Chemistry are designed systematically by our subject experts. This NCERT solutions help students in their preparation of class 11 final examination and also helps in competitive exams like JEE, NEET, BITSAT, etc.

When we start studying chemistry, different kinds of questions comes to our mind like what is chemistry, why we are going to study in chemistry and what is the importance of chemistry in our life? To solve these type of questions we require some basic concepts of chemistry and basic techniques of chemistry. In NCERT Solutions for Class 11 Chemistry, we will discuss only such concepts and techniques. In this chapter, we deal with topics like the importance of chemistry, different states of matter, atomic and molecular mass, Dalton’s atomic theory, Avogadro Law, the law of conservation of mass, normality, etc.

After studying NCERT Class 11 Chemistry Chapter 1 Some Basic Concepts of Chemistry, students will be able to understand the role of chemistry in our daily life; explain the characteristics of three states of matter which are solid, liquid and gas; classify different substances into elements, mixtures and compounds; able to explain various laws of chemical combination; describe terms like mole, molar mass, mole fraction, molarity and molality and also determine molecular formula and empirical formula.

 Formulas of Chapter 1 Some Basic Concepts of Chemistry 1. The mass percent of an element     $\\Mass\:percent\:of =\frac{Mass \:of\:that\:element\:in \:the\:compound\times 100}{molar \:mass\:of\:the\:compound}\\an\:element$ 2. Mass percent      $\\Mass\:percent =\frac{Mass \:of\:solute\times 100}{mass\:of\:solution}\\$ 3. Mole fraction    $\\Mole\: fraction \:of \:A =\frac{No. \:of\:moles\:of\:A}{No.\:of\:moles\:of\:solutions}=\frac{n_A}{n_A+n_B}$ 4. Molarity(M)    $\\M =\frac{No. \:of\:moles\:of\:solute}{Volume\:of\:solution\:in\:litres}$ 5. Molality(m)    $\\m =\frac{No. \:of\:moles\:of\:solute}{Mass\:of\:solvent\:in\:Kg}$

## Topics of NCERT Grade 11 Chemistry Chapter 1 Some Basic Concepts of Chemistry

1.1 Importance of Chemistry

1.2 Nature of Matter

1.3 Properties of Matter and their Measurement

1.4 Uncertainty in Measurement

1.5 Laws of Chemical Combinations

1.6 Dalton’s Atomic Theory

1.7 Atomic and Molecular Masses

1.8 Mole Concept and Molar Masses

1.9 Percentage Composition

1.10 Stoichiometry and Stoichiometric Calculations

## NCERT Solutions for Class 11 Chemistry Chapter 1 Some Basic Concepts of Chemistry - Exercise Questions

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## NCERT Solutions for class 11 Chemistry

 Chapter-2 Chapter-3 Chapter-4 Chapter-5 Chapter-6 Chapter-7 Chapter-8 Chapter-9 Chapter-10 Chapter-11 Chapter-12 Chapter-13 Chapter-14 Environmental Chemistry

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