ICP 2nd Semester Test

What happens at a temperature of 0 K?

• water freezes (i.e turns into a solid)
• the particles get less dense
• the pressure increases
• the particles stop moving

Specific heat capacity is related to the amount of internal energy _____.

• transferred by one molecule
• transferred by one object
• needed to change the temperature of one gram of a substance one degree
• one molecule contains
• a specific object has

Which releases the most energy, 100 grams of 100°C water cooling to 50°C, or 100 grams of iron at 100°C cooling to 50°C? (The specific heat of iron is 0.50 J/g°C and water is 4.186 J/g°C)

• Iron
• Water
• Both

How is heat being transferred through the object?

• conduction
• convection
• radiation

How is heat being transferred to the person?

• conduction
• convection
• radiation

The ______ of an object is a measure of the average kinetic energy of the particles in the object.

• heat
• temperature
• conductivity
• charge

Which picture has the highest temperature?

• 
• 
• 

Compressed air from a scuba tank cools off as a diver swims to deeper levels. What happens to the pressure of the air in the tank?

• the pressure goes down
• the pressure stays the same
• the pressure goes up
• it is impossible to tell

In car engine, the piston pushes down the gas vapors causing the volume of the gas to decrease. What will happen to the gas's pressure?

• nothing will happen to the pressure
• the pressure will decrease
• the pressure will increase
• it is impossible to tell

Suppose the temperature of the air in a balloon is increased. If the pressure remains constant, what quantity must change?

• volume
• compressibility
• adhesion
• size of the molecules