Specphic heat capacity

Question 1

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What is spechpihic heat cpacity?

Answer 1

The amount of energy needed to raise a temperature of 1kg of the sustance to by 1c

Different substances have different heat capacitys

If a substance has a low specific heat capacity, it heats up and cools down quickly (ie. it takes less energy to change its temperature)
If a substance has a high specific heat capacity, it heats up and cools down slowly (ie. it takes more energy to change its temperature)

Question 2

How much the temperature of a substance increases depends on what?

Answer 2

• Mass of the subsatnce heated
• Type of material
• Amount of nergy put into the system

Engery put in is in the form of thermal energy

Question 3

What is the specphic heat capcity of water?

Answer 3

4200J/kg (celcuis)

Question 4

What is the forumula for clauclating specphic heta capapcity?

Answer 4

Change in thermal energy= Mass x Specphic heat cpacity x Change in temerpreture

ΔQ = mcΔT

ΔQ = change in thermal energy, in joules (J)
m = mass, in kilograms (kg)
c = specific heat capacity, in joules per kilogram per degree Celsius (J/kg °C)
ΔT = change in temperature, in degrees Celsius (°C) or kelvin