Test Review - Specific heat

How many Joules of energy are required to change 10 gram of ice at -2 C to water at 20 C?

• 440 J
• 880 J
• 10,140 J
• 66,000 J

Specific heat is....

• The measure of kinetic energy of an objects particles
• A measure of the energy needed to increase the average kinetic energy of the particles
• The heating caused by the motion of flluid due to temperature difference
• The transfer of energy by electromagnetic radiation

How does heat flow?

• Always from cold to warm
• Always from warm to cold
• Both warm to cold & cold to warm
• It depends on the temperature

The amount of energy required to raise the temperature 1ºC for every kilogram is called____?

• Thermal Energy
• Specific Heat
• Temperature
• Kinetic Energy

What is the equation to measure change in Thermal Energy?

• Q=mc∆t
• Q=mc
• Q= ∆mct
• m=QC

What is the symbol for Thermal Energy in the specific heat formula?

• Q
• t
• m
• C

A high specific heat means...

• It requires less energy to change temperature
• It requires more energy to change temperature
• It heats up very quickly

When a piece of aluminum foil is taken out of the oven and cools from 100° C to 50°C, What is the change in temperature?

• 50°

• -50°

• 100°

• -100°

The specific heat of aluminum is 0.21 cal/g°C. How much heat(Q) is released when a 10 g piece of aluminum foil is taken out of the oven and cools from 100° to 50°?

• -105 J

• 105 J

• -1.05 J

• 1.05 J

lowest possible temperature on the Kelvin scale

• boiling point
• insulation
• absolute zero
• heat