HEAT GAS LAWS

• Change of State                                    Example

1. Vaporization                  a) Burning of champhor
2. Condensation               b) Water changed into ice
3. Freezing                        c) Steam
4. Sublimation                 d) Rain

1. Boyle’s Law a) P/T = a constant
2. Charles Law b) PV = a constant
3. Law of pressures c) V/T = a constant

1. Specific latent heat    a) Kelvin
2. Thermal capacity          b) JKg^-1K^-1
3. Specific heat capacity    c) J/Kg
4. Temperature                    d) JK^-1

• Quantity / Law                                    Formula

1. Boyle’s Law a) V/T = a constant
2. Latent heat b) m x c x ∆t
3. Charle’s Law c) mL
4. Quantity of heat d) PV = a constant

• Assertion (A) : The specific heat capacity of water is the highest of all substances.
•     Reason (R)     : Thermal capacity is the amount of heat required to raise the temperature of 1kg of a substance       through 1 K.

• Assertion (A)   : Temperature remaining constant, the pressure of a given mass of gas is directly proportional to its   volume.
•     Reason (R)        : The heat required to melt a substance without change in temperature is called latent heat of    fusion

• Assertion (A) : The zero of the Kelvin scale corresponds to -273^oC
•     Reason (R)     : At this temperature all molecules come to rest.  So it is called absolute zero.