Matter Page-286 Any things that occupies space and has a mass is called matter. Matter can be transparent, translucent or opaque. For example: book, pencil, water, board, human, wall, air, etc. Different state of matter Properties of solid Solid have fixed shape. Solid are generally hard. Solid have fixed volume. Solid do not flow. Molecules of solid are closely packed. Liquid The matter which no fixed shape but has fixed volume is called liquid. Properties of liquids They don’t have fixed shape. They have fixed volume. They flow easily. They cannot be compressed much. Gas The matter which has neither fixed shape nor fixed volume is called gas. Properties of gas Gas do not have fixed volume. Gas flow very easily. Gas do not have fixed shape. Gas can be compressed very easily. Position of molecules is not fixed. Classwork Write any three differences between the following: Solid and Liquid Liquid and Gas Solid and Gas Density The density of a substance is defined as mass...
