Chapter 16 Notes

Heat

Transfer of thermal energy from hot to cold until _____________________ is reached.  

Heat energy is measure in ________________

Joules and _________________ are two ways to measure heat.  We use Joules

Temperature

-Average _________________ energy of the particles

faster moving = ________________

slower moving = _______________

Thermal Contraction/Expansion

As molecules get hotter, they move faster and ______________________.  (except for

when ice goes from a liquid to a solid it actually _________________)

examples-

Specific Heat

-Amount of heat needed to raise the temp. of one _____________ of a material by one

_________________.

-Lower Specific Heats --> take __________ energy to heat up.

    ex. _____________

-Higher Specific Heats --> take __________ energy to heat up.

    ex. ____________________________

- Measured in        ______________________

Heat Formula

Q = m  x  c   x  

Q = Heat energy (Joules)

m = mass (grams)

c  = specific heat (J/gC)

   t= change in temperature  (Celsius, keep numbers positive)

m = Q/(c xt)    c=Q/(m x  t)        t=Q/(m x c)

Calorimeter

- Measures changes in __________________

Heat lost by one thing = heat gained by another (______________________)

Heat Transfer

__________________- heat transfer through direct contact (matter is needed to transfer the heat)

__________________- heat transfer through the movement of fluids (liquids or gasses) (matter is need to transfer the heat)

___________________- heat transfer through electromagnetic waves of radiation (matter is not needed for heat transfer in this case)