Write the property of three states of matter solid, liquid and gases
Answers
Answer:
Matter: Anything that has mass and occupies some space is called matter, matter exist in fours states.
1. Gas: simplest from of matter
2. Liquid: Least abundant form of matter
3. Solid: Most abundant state of matter on earth
4. Plasma: Most abundant state of matter in universe.
Note:- Only plasma is not the phase transition state of matter.
Gas state of matter
Properties of Gases
(I) Volume:- Gases do not have specific volume and occupy all the available space.
(II) Shape:- Gases do not have definite shape and take the shape of container.
(III) Density:- Gases have low density as compared is liquids and solids, gases bubbles through liquid and kinds to rise.
(IV) Diffusion and Effusion:- Gases can diffuse and effuse.
(V) Empty Spaces:- Gases can be compressed by applying pressure due large empty spaces b/w molecules.
(VI) Expansion:- Gases expand on heating or by increasing available volume.
(VII) Joule Thomson Effect:- When sudden expansion of in a high of low pressure a gas occurs cooling takes place. It is J.T. effect.
(VIII) Motion:- Molecules of a gas are in state of constant motion. i.e Transnational, Rotational and vibration.
(IX) Forces:- Gases have very weak in to molecules forces or attractions.
(X) Kinetic Energy:- Gases have high kinetic energy and show effective collisions.
Gases effuse due to transnational motion.
Pressures of gases | Law of gases
Force per unit area is called pressure. S.I unit of pressure Nm-2 or Pascal. Its unit is atmosphere (atm.) The pressure of air that can support 760 mmHg column at 0 ℃ ratitude of 45० sea level is called atmosphere.
Gas pressure formula
1atm = 760 mmHg = 76 cmHg = 101325 pascal = 101.325 KPa = 101325 Nm-2 = 14.7 Psi = 1013.25 millibar = 1.01325 bar.
Note:- Uses Pressure unit
1) Atmosphere (atm) is used for scientific work.
2) Pound inch -2 (Psi) is used for engineering work.
3) 1013.25 millibar is used by meteorologist.
4) Nm-² and Pascal are S.I unit of Pressure.
Colour and Odor of Gases
NO2 (Nitrogen Dioxide) is of reddish brown color, and hydrogen sulphide (H2S) has a rotten egg smell, H2, N2, O2, He are colorless and odorless.
The Gases laws
The relationship between volume of a given amount of gas and the prevailing conditions of temperature and pressure are called gas laws. Gas laws describe uniform behavior of gases. Gases shows uniform behavior forwards extend conditions.
Boyle's law
The volume of a given mass of gas, a t constant temperature is inversely proportional to pressure applied. V∝ 1 / P (T and n are constant)
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