Kinetic Theory
What does the kinetic theory state about the motion of particles in a gas?
Particles in a gas are in constant random motion and collide elastically.
Write the equation for the Ideal Gas Law and identify each variable.
PV=nRT
P = pressure
V = volume
n = moles
R = gas constant
T = temperature (K)
What is thermal equilibrium?
Thermal equilibrium is when two objects reach the same temperature and no net heat flows.
Law of the Conservation of Energy
energy cannot be created or destroyed, only transformed from one form to another
Who invented the cotton gin?
Eli Whitney
If you double the Kelvin temperature of a gas, what happens to the average kinetic energy of its particles?
The average kinetic energy doubles.
If volume decreases and temperature stays constant, what happens to pressure?
Pressure increases
Name the three methods of heat transfer.
Conduction, convection, and radiation.
What color do you get when you mix all light together?
white
"Rush Hour" Stars
Chris Tucker and Jackie Chan
A sealed container of gas is heated from 300 K to 450 K. By what factor does the average kinetic energy of the gas particles increase?
450/300=3/2=1.5
A gas inside a sealed rigid tank is heated so its temperature doubles. How does pressure change?
Pressure doubles
Why does a metal spoon feel colder than a wooden spoon at the same temperature?
Metal is a much better conductor, so it draws heat from your hand faster.
What first-person shooter video game developed by Valve and published for Microsoft Windows in 1998 launched a globally successful franchise? The game shares its name with a scientific term frequently used in nuclear physics to describe the stability of atoms.
Half-Life
What was the first animal to ever be cloned?
Sheep
A container holds 3.0 mol of gas at 2.0 × 10⁵ Pa and 0.050 m³. What is its temperature?
T=(2.0×105)(0.050)/(3.0)(8.31)≈401 K
A 0.5-kg block of aluminum (specific heat 900 J/Kg·°C) at 150°C is placed in 0.8 kg of water at 20°C (specific heat 4186 J/g·°C)
Assuming no heat loss to the environment, what is the final equilibrium temperature.
35.4 °C
which scientist actually won the 1921 Nobel Prize in Physics for his discovery of the photoelectric effect?
Albert Einstein
Before embarking on a solo career, Beyoncé was part of what R&B group?
Destiny's Child
A gas enclosed in a cylinder has a pressure of 2.0 X 10^5 Pa. The ends of the cylinder have a diameter of 0.40m and the cylinder has a height of 0.30m
. The magnitude of the force exerted by the gas on the wall at one end of the cylinder is
2.5 X 10^4 N
A balloon expands from 1.2 L to 3.6 L at constant temperature. If the initial pressure was 150 kPa, what is the final pressure?
50kPa
A block of ice absorbs 15,000 J of heat and melts. If the latent heat of fusion of ice is 334,000 J/kg, how much mass melted?
45g
What “-ism” is the branch of physics that describes the physical interaction between electrically charged particles? It is measured using Newtons.
Electromagnetism
How many reindeer does Santa have?
8