specific heat capacity Flashcards

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1
Q

what is specific heat capacity

A

the amount of energy needed to raise the temperature of 1kg of a substance by 1*C per kilogram of mass

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2
Q

specific heat capacity equation

A

c= change in energy
————————–
mass x temperature change

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3
Q

how much the temperature of a system increases depends on (3)

A
  • mass of substance heated
  • type of material heated
  • amount of energy put into system in form of thermal energy
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4
Q

what does specific heat capacity tell you

A

how hard it is to heat something up

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5
Q

if a substance has low heat capacity, then it is

A

easy to heat up and also cool down quickly

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6
Q

if a substance has a high heat capacity, then it

A

is hard to heat up, and doesn’t cool down quickly

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7
Q

how much the temperature of aa system increases depends on (3)

A
  • mass of substance heated
  • type of material
  • amount of energy put into the system in the form of thermal energy
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8
Q

how do you calculate the specific heat capacity of a liquid

A
  • measure the mass of an insulating container, add the liquid to the container and measure again, the difference in mass is the mass of the liquid in the container.
  • put an insulating lid on the container and place the voltmeter in parallel with the immersion heater, the ammeter in series between heater and power supply.
  • measure initial temp of liquid, then turn on the heater (low power)
  • when liquid temp has increased by ten degrees, switch off and record temp increase and energy transferred to liquid from the joulemetre
  • calculate specific heat capacity using formula
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9
Q

how do you calculate specific heat capacity in solids

A
  • need a block of the solid and it needs to have 2 holes for the immersion heater and thermometer
  • take initial temp
  • heat it up slowly
  • when it has increased by ten degrees turn it off
  • do the same as for the liquid one
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