Say whether each of the following describes a solid,
liquid or a gas::
a. Particles move about freely at high speed
b. Particles vibrates and cannot change positions.
c. Fixed shape and volume.
d. Particles vibrates but can change positions
e. No fixed shape or volume.
f. Fixed volume but no fixed shape.
g. Virtually no attractions between particles.
2- If a gas heated up, how does this affect the motion
of its particles?
3- what is meant by internal energy?
-273
0
100
273
373
Say which of the above is the temperature of a
a. Boiling water in °C
b. Absolute Zero in °C
c. Melting ice in °C
d. Boiling water in K
e. Absolute zero in K
f. Melting ice in K
°C= K – 273
K= °C +273
For each of the following designations of a system
and a surroundings, identify the direction of heat flow
as being from the system to the surroundings or from
the surroundings to the system
System
Surroundings
a.
Living Room
(T=78°F)
Outside Air
(T=94°F)
b.
Living Room
(T=78°F)
Attic
(T=120°F)
Attic
(T=120°F)
Outside Air
(T=94°F)
c.
Dir'n of Heat
Transfer