Basic Concepts of Chemistry Quiz

Chemistry is the science of molecules and their transformations.

According to Roald Hoffmann, chemistry is the science not so much of the one hundred elements but of the infinite variety of molecules that may be built from them.

Science can be viewed as a continuing human effort to systematise knowledge for describing and understanding nature.

<p>After studying this unit, students are expected to 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 compound from the given experimental data, and perform the stoichiometric calculations.</p> Signup and view all the answers

<p>The role of chemistry in different spheres of life includes the understanding of diverse substances present in nature and changes in them in daily life.</p> Signup and view all the answers