Thermodynamics Chemistry Printable Answers

When water is cooled from 15°C to 10°C, what is the change in temperature?

• 10 °C

• 5 °C

• 15 °C

• -5 °C

___________ is measured by the unit joules (or calories).

• Heat energy

• Temperature

• Specific heat

Tags

NGSS.HS-PS3-4

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

• q=cm∆t

• q=mc

• q= ½mv

• c=q/m∆t

A sample of metal has a mass of 5.2 g and absorbs 478 joules of energy as it is heated from 30.0°C to 37.35°C. What is the heat capacity of the metal?

• 0.42 J/g °C

• -0.080 J/g °C

• 13 J/g °C

• -13 J/g °C

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

How many joules of heat are needed to raise the temperature of 10.0 g of aluminum from 22.0°C to 55.0°C?

Caluminum = 0.890 J/g °C

• 2.94 J

• 294 J

• 0.00270 J

• 3.71 J

A high specific heat means...

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

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

• Water

• Wood

• Both are same

Energy is transferred as heat between two objects of ___________ temperatures. 

• differing
• same

Tags

NGSS.HS-PS3-4

As the kinetic energy of the molecules in a substance increases, the temperature of the substance __________.

• increases
• decreases

Tags

NGSS.HS-PS3-2

The measure of average kinetic energy of all the particles within an object is called ____________. 

• temperature
• conduction
• radiation
• heat 

Tags

NGSS.HS-PS3-2