thermal properties & temp

• temperature: the average kinetic energy of the molecules of a substance
• how to scale a thermometer?

  1. put the thermometer in pure melting ice
  2. then put it in pure boiling water
  3. measure difference between 0 & 100 degrees & divide it by 100
• thermometric properties:

  1. volume of liquid and gas change
  2. some solids color changes
  3. resistance of some conductor
• Q = the amount of thermal energy needed to increase the temperature of a substance
• C = the amount of thermal energy needed to increase 1 kg of a substance by 1 degree
• Q = mass x specific heat capacity x delta t
• as the mass increase thermal energy increase
• as the specific heat capacity increase thermal energy increase
• specific heat capacity and delta t are inversely proportional