Homework
P 424 1-5, 11-16
1.
2.
3.
4.
5.
6.
7.
8.
11.
12.
13.
14.
15.
16.
Temperature is directly related to average KE of the particles in a
substance.
Celsius (0-100 C) Fahrenheit (32-212 F)
Temperature is not based upon how much substance is present. It
is based upon the average KE (vibrational speed) of the particles
that make up the substance.
Matter contains internal energy (thermal energy is the energy of
the particles that compose matter). Heat is the quantity of thermal
energy that flows from a hotter to a colder object.\
Heat flows from the hotter to the cooler object.
Skip
Thermal equilibrium is a condition where all objects are at the
same temperature. This occurs after heat has been transferred from
the hotter to the colder substance, so the hotter substance becomes
colder and the colder substance becomes warmer until both are the
same temperature.
Internal energy is the kinetic and potential energy of the molecules
that make up a substance.
It means that it has a high or low ability to store internal energy.
Substances that heat up quickly are conductors and have low
specific heat capacities.
The specific heat capacity of water is high.
The ocean gives energy to the air above it in the winter, which is
then carried over land, warming it. In the summer, the water
absorbs the energy from the air above it, and the cooler air moves
over the land and absorbs energy from it.
The more conductive metal expands faster and contracts faster,
which causes the strip to curl.
Gases!
Pg 463
2. Change of phase from liquid to gases absorbs thermal energy from the
surroundings, leaving the surroundings cooler.
4. Change of phase from gas to liquid releases thermal energy into the
surroundings, causing the surrounding to become warmer.
10.Evaporation only occurs at the surface, whereas boiling occurs
throughout a liquid.
11.Atmospheric pressure inhibits boiling (does not allow it to cool),
which means the water can increase in temperature beyond the normal
boiling point.