Question

Write and explain measurable properties of gases.

Answer 1

Hint – The measurable properties of the gases are used for describing the physical state of a gas. The measurable properties of gases are mass, volume, pressure and temperature.
We have to explain the measurable properties of gases.

Complete step-by-step answer:
Let us first discuss the measurable properties.
The measurable properties of the gases are the properties which are used for describing the physical state of a gas. There are four measurable properties of gases which are given and explained below-
Mass - The mass of a gas is one of the properties which describes the gas physical properties. The mass of a gas is generally expressed in terms of moles. Gases don't have any shape; they occupy the shape of the container in which they are filled. The mass of the gas can therefore be determined by weighing the container after removing the gas filled in it. So, the difference between the two weights gives the mass of the gas.
Volume – Another measurable property of gases is the volume, as we know that gases occupy the entire space available to them, so the measurement of a gas only requires the measurement of the container confining the gas. Volume of a gas is expressed in litres, millilitres or you can also use cubic centimetres or cubic metres.
Pressure – Pressure is also a measurable property of gas. We know that pressure of the gas is the force exerted by the gas on a per unit area of the walls of the container in all directions. Also, the pressure exerted by any gas is because of the kinetic energy of its molecules. Also, the SI unit of pressure is Pascal (Pa).
Temperature – We know that gases expand if we increase the temperature, if temperature is increased twice, the square of velocity also increases two times, so the kinetic energy increases and thus the pressure increases. Temperature is measured in centigrade degree or Celsius degree and the device used for measuring temperature is a thermometer.

Note – Whenever such types of questions appear then always explain each property one by one to avoid any confusion. Also, as mentioned in the solution, first it is explained about the measurable properties, about what they tell about the gases and then each property is explained.