Specific Heat

___________ is measured by the unit Joules.

• Heat energy
• Temperature
• Specific heat

What  is the formula to calculate heat energy required to raise the temperature of any substance?

• Q=mc∆t
• Q=mc
• Q= ½mv
• m=QC

The symbol for specific heat is .......

• s or c

• Q

• m

• t

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 specific heat of platinum is 0.133 J/g°C. How much heat(Q) is released when a 10 g piece of platinum cools from 100°C to 50°C?

• 66.5 J

• 665 J

• 0.0266 J

• 0.665 J

The specific heat(c) of copper is 0.39 J/g °C. What is the temperature change(∆t) when 100 Joules of heat(Q) is added to 20 grams?

• 12.82 °C

• 24.12°C

• 1.95 °C

• 5128 °C

the addition of 485 J of energy increases the temperature of a 47.3 g sample of a metal from 25.6^oC to 45.3^oC. What is the specific heat capacity of this metal?

• .226 J/g*^oC

• .520 J/g*^oC

• .401 J/g*^oC

• .385 J/g*^oC

In heat capacity equations, what does the triangle represent?

• Temperature

• energy

• mass

• change in

• change in temp

The specific heat of copper is 0.39 J/g °C. What is the temperature change(∆t) when 1,732 Joules of heat(Q) is added to 22.5 grams of copper?

The specific heat of platinum is 0.133 J/g°C. How much heat(Q) is released when a 17.5 g piece of platinum cools from 127°C to 52°C?