Thermal Properties of Matter — Class 11 CBSE Physics revision notes
A 7-page visual revision sheet for Thermal Properties of Matter, written for Class 11 CBSE Physics. Formulas, diagrams and the traps that cost marks, laid out to be read the night before rather than the term before. Free, and it opens inside CapCompass.
Page 1 as PDF
Thermal Properties of Matter in one look
heat flows on its own only one way, from hot to cold, until the two agree
Heat and temperature
- temperature: how hot or cold a body is, read off a scale
- heat: energy in transit between bodies at different temperatures
- heat flows on its own only hot to cold, until the two agree
- that state is thermal equilibrium: no net flow
- zeroth law: A and B each in equilibrium with C, so A and B are in equilibrium
- that is why a thermometer works: it settles with the body
Temperature or heat?
- a state: how hot
- read with a thermometer
- unit: K, C or F
- energy in transit
- flows only hot to cold
- unit: joule
Temperature scales
- all three scales read one hotness
C/5 = F-32/9 = K-273.15/5 - kelvin is fixed by the triple point of water
T_tr = 273.16 K
Gas laws and absolute zero
- Boyle: PV constant at fixed T; Charles: V/T constant at fixed P
- Gay-Lussac: P/T constant at fixed V, T always in kelvin
- any gas's P-T line, run back to zero pressure, ends at -273.15 degrees C
- that is absolute zero, 0 K: the lowest temperature possible
Page 1 of 7. The full sheet, all 7 pages, opens free in the app.
What this Thermal Properties of Matter sheet covers
- Heat and temperature
- Temperature or heat?
- Temperature
- Heat
- Temperature scales
- all three scales read one hotness
- kelvin is fixed by the triple point of water
- Gas laws and absolute zero
- Thermal expansion
- linear
- area
- volume
- Bimetallic strip
- Liquids and the flask
- Anomalous expansion of water
- Specific heat
- Calorimetry
- heat exchanged
- principle of calorimetry, an isolated system
- Change of state
- Latent heat
- heat for a change of state, T constant
- latent heat of fusion, ice at 0 degrees C
- latent heat of vaporisation, water at 100 degrees C
- Boiling and pressure
- Conduction
- Conduction, the numbers
- rate of heat flow, rod of length L and area A
- thermal resistance
- Convection
- Absorb, reflect, transmit
- Blackbody
- Emission and Kirchhoff
- Stefan-Boltzmann and Wien's law
- power radiated per unit area, blackbody
- net rate, a body at T in surroundings at T_0
- Wien's displacement law
- Newton's law of cooling
- rate of cooling, small excess over surroundings
- Thermal stress in a clamped rod
- Traps that cost marks
- Tricks that save time
How CapCompass uses this sheet
These notes are not a standalone PDF. CapCompass plans Physics chapter by chapter against your real exam dates and free hours, and when the plan reaches Thermal Properties of Matter the sheet opens inside the study block itself — at the page covering the sub-topic that block is on, with the timer still running. Revision arrives at the moment the plan says revise, instead of having to be gone looking for.