specific heat

Consider 2 blocks of Aluminium (one of 1kg and one of 10 kg) and being supplied with thermal energy.

Which one heats up the fastest?

• 1 kg

• 10 kg

• They both heat up at the same rate

• They don't heat up.

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.

Tags

NGSS.HS-PS3-2

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.

Tags

NGSS.HS-PS3-4

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.HS-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.HS-PS3-1

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

Tags

NGSS.HS-PS3-1

Heat energy moves from __________ things to _________ things.

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

Tags

NGSS.HS-PS3-4

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

• 12644J

• 6322J

• 25288J

• 3161J

Tags

NGSS.HS-PS3-1

A high specific heat means...

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