Specific Heat

The specific heat(c) of copper is 0.39 Jg^-1K^-1. What is the temperature change(∆T) when 100 Joules of heat(Q) is added to 20 grams?

• 12.82 °C

• 24.12°C

• 351 °C

What is temperature a measure of?

• total kinetic energy in a substance
• total energy in a substance
• average molecular kinetic energy in a substance.
• average energy in a substance.

What is thermal equilibrium?

• When two objects are at rest at the same time.
• When two or more objects reach a common temperature.
• When two objects have the same specific heat.

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

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 of the metal?

• 1.17 J/g°C
• -1.17 J/g°C
• 0.857 J/g°C
• -0.857 J/g°C

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A sample of iron receives 125J of heat energy that raises the temperature of the iron 32.0°C. What is the mass of the iron sample?

• 8.70g

• 14.4 g

• 20 g

• 50 g

Heat energy moves from __________ things to _________ things.

• warm / cold
• cold / warm
• liquid / solid

Tags

NGSS.MS-PS1-4

How much heat is required to warm 275 g of water from 76C to 87C?

• 12644J

• 6322J

• 25288J

• 3161J

A high specific heat means...

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

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the equation to measure change in Thermal Energy?

• Q=mc∆t
• Q=mc
• Q= ∆mct
• m=QC

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4