2.2 specific heat capacity Flashcards
(7 cards)
What is the specific heat capacity of a substance?
the amount of energy needed to change the temperature of 1 kg of the substance by 1°C
How do you calculate the energy needed to change the temperature of mass by A0?
AE = m x c x A0
How does the mass of an object affect the temperature increase when heated?
The greater the mass of an object the more slowly its temperature increases when it is heated
How do you find the specific heat capacity ( C )of a substance?
Use a joulemeter and a thermometer to measure AE and A0 for a measured mass then use
c = AE / m A0
What does AE stand for?
Energy transferred (joules, j )
What does C stand for?
Specific heat capacity (joule per kilogram per degree Celsius, J/kg °C)
What does A0 stand for?
Temperature change (degree Celsius, °C)