Specific Heat Review

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

• 12.82 °C

• 24.12°C

• 1.95 °C

• 5128 °C

The temperature of an unknown piece of metal with a mass of 30 g changes from 25.0 °C to 35.0 °C when the metal absorbs 350 J of energy. What is the specific heat of the metal?

• 1.17 J/g°C

• -1.17 J/g°C

• 0.857 J/g°C

• -0.857 J/g°C

1. What mass of water will change its temperature by 3 ⁰C when 525 J of heat is added to it? The specific heat of water is 4.18J/g^oC.

• 40 g

• 41.87 g

• 211 g

• 12.5 g

There are four cups of hot cocoa. The cup sizes are shown. The temperature of the cocoa in each cup is 25 degrees celsius. Which cup has the MOST thermal energy?

• Trenta

• Tall

• Venti

• All are the same temperature so they all have same thermal energy

What unit do you use to measure thermal energy?

• J/gºC

• g

• ºC

• J

A high specific heat means...

• It heats up quickly with energy added
• It requires more energy to change temperature

I heat up 2 pans of water one has 100 mL in it and one has 1000 mL. Which one heats up the fastest?

• 100 mL

• 1000 mL

• They both heat up at the same speed

• They both cool down

What is the equation to measure change in thermal energy?

• Q=mc∆t

• Q=mc

• Q=∆mct

• m=QC

Copper, stainless steel 316, carbon steel, and zinc were all heated using the same thermal energy. What material would be the coolest after being heated?

• Copper

• Carbon Steel

• Zinc

• Stainless Steel 316

A material was cooled from 100ºC to 40ºC. What is the temperature change?

• 60ºC

• 140ºC

• -60ºC

• -140ºC