Heat and temperature

Question 1

Heat

Answer 1

form of energy that passes between 2 samples owing to differnce in temperature

Question 2

temperature

Answer 2

the property of a sample which determines if heat energy will flow to or from another sample of different temperature

Question 3

specific heat capacity

Answer 3

amount of heat per unit mass required to raise temp by 1 degree C

Question 4

Triple point

Answer 4

temp at which all 3 phases of water are in equilibrium at 611.73Pa. it occurs at 0.01 degree C

Question 5

Kelvin

Answer 5

Degree C + 273.15 = kelvin

Question 6

resistance wire

Answer 6

resistance increases as temp increases

Question 7

thermistor

Answer 7

resistance of semiconductor falls as temp increases

Question 8

seeback effect

Answer 8

at junction of 2 dissimilar metals, a voltage is produced in proportion to temp diff between 2 junctions

Question 9

thermocouple

Answer 9

uses seeback effect, one junction is a known temp to calculate temp at other junction

Question 10

latent heat

Answer 10

energy required for material to undergo change of phase

Question 11

specific latent heat of fusion

Answer 11

amount of energy required at temp to convert mass of solid to liquid without a temp change. This amount is released to environment when goes from liquid to solid

Question 12

specific latent heat of vapourisation

Answer 12

amount of heat required at specific temp to convert unit mass of liquid to a vapour without a temp change

Question 13

critical temperatuer

Answer 13

temperature at which above the gas cannot turn into a liquid no matter how much pressure applied

Question 14

isotherm

Answer 14

shows volume pressure relationship of a gas above and below its critical temp. image 11