Page 26 - Finalll Science BB Prep2 t1 2025_Neat

Factors affecting the change in temperature of a system

1- The mass of the substance (on change in temperature)

Heating time = a measure

for the gained heat quantity

1 2 1 2

Controlled variable:
heat quantity & type of matter
Independent variable:
Mass of water
Dependent variable:
The amount of temp. change
Observation Temperature of water in 1 = that The rise in water temperature of
of water in 2 despite diff. in mass 2 is greater than that of 1
Conclusion The amount of change in temperature of different masses of
same substance varies when this substance
gains / loses the same quantity of heat
Explanation As mass increases , the raising As mass decreases , the raising

of the substance temperature of the substance temperature

decreases . increases .

As the gained thermal As the gained thermal
energy is distributed over energy is distributed over
greater number of fewer number of
particles so, average K.E particles so, average K.E

increases lesser . increases greater .

First Term 45