L8 - specific heat capacity

Question 1

define ‘heat’.

Answer 1

a form of energy (thermal) and so is measured in Joules (J).

Question 2

the thermal energy in an object depends on..

Answer 2

mass, starting temperature, the material.

Question 3

define ‘specific heat capacity’.

Answer 3

the amount of energy required to raise the temperature of one kilogram of the substance by one degree celsius.

Question 4

why do metals have a low heat capacity?

Answer 4

they require less energy to heat up. it will heat up the fastest.

Question 5

rearrange △E=m x c x △Ø
(energy transferred = mass x specific heat capacity x temperature change)

Answer 5

m=△E/c x△Ø
c= △E/m x△Ø
△Ø=△E/m x c

Question 6

what does a joulmeter measure in shc?

Answer 6

energy transferred.

Question 7

what does an immersion heater do in shc?

Answer 7

heats material.

Question 8

what does a thermometer measure in shc?

Answer 8

temperature change.

Question 9

what does a blance measure in shc?

Answer 9

mass of the material.

Question 10

what key notes should you use in a 6 marker about shc practical?

Answer 10

joulmeter measure energy transferred, links to energy in equation△E=m x c x△Ø (rearrange equation to find out shc). top pan balance measures mass of material, links to mass in equation. thermometer measure temp change and start of temp of material, links to temp change in equation.