States of matter|chemistry 3|short notes for NEET 2025|Summary notes for NEET 2025|NEET 2025 CHEMISTRY
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Chemistry : Textbook For Class Xii
This document provide you with the powerful summary of chemistry topic, i.e, STATES OF MATTER. One of the important chapter for NEET. This document deals with the states of matter: solid, liquid, gas – each with its own unique properties and behaviors. Hope you guys use this docs file in you prep...
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STATES OF MATTER
MATTER –
(Defined by IMF = Keeps particle
together.
Thermal energy = Keeps particles apart.)
Solid Liquid Gas
IMF>>>T.E Intermediate T.E>>>IMF
(not in syllabus) Fluids (in physics) Gaseous state
Solutions (done) [Not much in
Syllabus]
1.Gaseous state:
T.E >>> IMF
Shape and volume not fixed.
Gases are of two types:
1.Real gases- Not follow PV=n RT
2.Ideal gases- Follows PV= n RT
Pressure- ATM
Bar
Torr
Pascal = Nm-2
, mm of Hg
1 ATM = 760 mm of Hg = 760 torr = 76 cm of Hg
= 1.031 bar = 1.031×105 Pascal or Nm-2
1 Bar = 0.987 ATM = 105 Pascals or Nm-2
Volume- S.I unit = m3
1 litre = 1000 ml = 1000 cm3 = 1000 cc = 1 dm3
=10-3 m3
Density- m/v
;1g/cm3=1000Kg/m3
S.I unit = Kg/m3
C.G.S unit = g/cm3 or g/cc
Temperature- (always in Kelvin scale)
°C + 273 = K
9 (°C) + 32 = °F
5
n = Number of moles = W (given mass)
M (molar mass)
= No. of particles = Given volume V
NA Molar volume V m
Molar volume (V m): Vol. of 1 mol of any gas at
constant T and P.
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