states / soecifc heat capacity Flashcards
1
Q
solid
A
close together
vibrates in fixed positions
regular
2
Q
liquid
A
close
moving about - can slide past one another
irregular
3
Q
gas
A
far apart
move quickly
at random
4
Q
changing state graph
A
during state change temp is constant (graph flat) as heat energy breaks molecule bonds
when temp ^ KE of molecules ^
5
Q
specific heat capacity
A
energy required to heat 1kg of a substance by 1°
6
Q
factors affecting energy used to heat
A
- mass
- temperature needing to be reached
- material/ type of substance
7
Q
how to measure energy
A
- joulmeter
- use power of heater and E=Pt
- use ammeter/ voltmeter and E= ItV
8
Q
common reason of specific heat capacity to be wrong
A
we don’t know how much energy is transferred from block to surroundings
insulate to reduce this
9
Q
specific heat capacity is measured in
A
J/kg°C
10
Q
p/t = p/t
A
temp in kelvin
