Class 9 Chemistry Fundamentals of Chemistry Important Q/A for Exams: Chemistry branch of science which deals with Composition of matter Properties of matter Changes in matters Different laws and principles which deals […]
Mole is a counting device or a number like: 12 things = Dozen 144 things = Gross 2 things = Pair 1000 g = 1k g similarly: 6.022 x 1023 particles =1 […]
Chapter-Wise multiple Choose Question with brief answers for Class 11 Chemistry: Chapter 1: Basic Concepts of Chemistry Important MCQs Chapter 2 :Structure of Atom Important MCQs (Part 1) Chapter 2 :Structure of […]
Substances: A sample of pure matter is called a substance or anything whose composition is uniform throughout and has well-defined physical and chemical properties is called a substance. E.g. Silver, Gold, Water, […]
What is Formula unit? In Chemistry, the simplest ratio between cations & anions in an ionic compound is called formula unit. OR: Simplest unit whose repetition builds crystal is called formula unit. […]
What is Chemical Formula? The symbolic representation of a compound that shows elements in the compound and also the ratio of their atoms is called chemical formula. As elements are represented by […]
