Thermal properties

The specific heat of platinum is 0.133 J/g°C. How much heat (∆E) 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

20 g of water. specific heat of water is 4.18 J/g°C. temperature changes from 25° C to 20° C, how much heat energy (∆E) moves from the water to the surroundings?

• 418 J

• 209 J

• 83 J

• 4.18 J

The SI units J/kg°C measures

• Specific heat capacity

• mass

• temperature

• heat energy

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

• 12.82 °C

• 24.12°C

• 1.95 °C

• 5128 °C

Copper, Stainless Steel, 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

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Specific heat of water is  4.18 J/g°C. Specific heat of wood is 1.760 J/g°C What material needs more heat energy to raise the temperature?

• Water
• Wood
• Both are same

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The temperature of an unknown piece of metal with a mass of 30.00 g changes from 25.0 °C to 35.0 °C when the metal absorbs 350.0 J of energy. What is the specific heat capacity of the metal?

• 1.17 J/g°C

• -1.17 J/g°C

• 0.857 J/g°C

• -0.857 J/g°C

___________ is measured by the unit Joules.

• Heat energy
• Temperature
• Specific heat

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

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

• ∆E=mc∆T

• ∆E=mc

• ∆E= ½mv

• m=∆EC

A high specific heat capacity means...

• It heats up quickly with energy added

• It requires more energy to change temperature