Class 11 Chemistry — Chapter 1: SOME BASIC CONCEPTS OF CHEMISTRY

What you'll learn

• ▸Nature and Classification of Matter
• ▸Scientific Notation and Significant Figures
• ▸SI Units and Dimensional Analysis
• ▸Laws of Chemical Combination
• ▸Atomic, Molecular, and Formula Mass
• ▸Mole Concept and Molar Mass
• ▸Empirical and Molecular Formula
• ▸Stoichiometry and Limiting Reactants
• ▸Historical Development of Chemistry

Chapter Summary

--- PAGE 1 --- UNIT 1 11082CH01 SOME BASIC CONCEPTS OF CHEMISTRY Objectives After studying this unit, you will be able to * appreciate the contribution of India in the development of chemistry understand the role of chemistry in different spheres of life; * explain the characteristics of three states of matter; * classify different substances into elements, compounds and mixtures; * use scientific notations and determine significant figures; * differentiate between precision and accuracy; * define SI base units and convert physical quantities from one system of units to another; * explain various laws of chemical combination; * appreciate significance of atomic mass, average atomic mass, molecular mass and formula mass; * describe the terms – mole and molar mass; * calculate the mass per cent of component elements constituting a compound; * determine empirical formula and molecular formula for a…

Practice Questions from this Chapter

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1. Explain the states of matter. Get Solution →
2. Define elements and compounds. Get Solution →
3. List ancient Indian chemistry facts. Get Solution →
4. What is the definition of matter provided in the text? Get Solution →
5. According to the text, what was chemistry called in ancient India? Get Solution →
6. The 'Philosopher's stone' (Paras) was a mythical substance sought by alchemists that was believed to do what? Get Solution →
7. Which of the following drugs, mentioned in the text, is effective in cancer therapy? Get Solution →
8. In which state of matter are particles held very close to each other in an orderly fashion with very little freedom of movement? Get Solution →

Did you know?

• 💡 Diamonds and graphite are both made entirely from the same carbon atoms.
• 💡 Your body contains enough carbon to make about 9,000 graphite pencils.
• 💡 The Iron Pillar of Delhi has amazed scientists by not rusting for over 1600 years.
• 💡 Ancient Egyptians used lead-based makeup, which was ironically toxic to them.
• 💡 A single drop of water holds more water molecules than stars in the Milky Way.

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