Matter is anything that has a mass & occupies a space, Mass is the amount of matter that the body contains, The measuring unit of mass is gm or kg, Volume is the space...
The gases contract by cooling and expand by heating , Equal volumes of different gases expand equally when heated through the same temperature rise , In other words they have the same volume expansion...
Types of Measurement Direct Measurement such as measuring liquid density using the hydrometer in which we take a direct reading without calculation or using any law , Measuring volume using the graduated cylinder .
