Tag: 9th Chemistry

  • Chemistry IX | Matter-Its Nature and Behaviour | Part 2

    Matter-Its Nature and Behaviour | Part 2 Compounds · A compound is a substance made up of two or more elements chemically combined in a fixed proportion by weight e.g., water, NaCl, NH4Cl and CO2, etc., Properties of Compounds · A compound cannot be separated into its components by physical methods. · The properties of…

  • Chemistry IX | Matter-Its Nature and Behaviour | Part 1

    Matter-Its Nature and Behaviour | Part 1 INTRODUCTION Matter · Anything that occupies space , possesses mass and exert pressure is called matter. Element · An element is a substance which cannot be split up into two or more simpler substances by the any chemical and physical methods of applying heat, light or electric energy.…