Thermal calculations

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

• differing

• same

Tags

NGSS.MS-PS1-4

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

• increases

• decreases

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

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

• temperature

• conduction

• radiation

• heat 

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

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

The symbol for specific heat is .......

• c

• Q

• m

• t

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

• Q=mc∆t

• Q=mc

• Q= ½mv

• m=QC

Tags

NGSS.MS-PS3-4

A 15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°C to 175°C. Calculate the specific heat capacity of iron.

• 0.46 J/g^oC

• 1.654 J/g^oC

• 2,567,446.875 J/g^oC

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, if the specific heat of aluminum is 0.903 J/g°C?

• 298 Joules

• 0.003 Joules

• 297 J/g°C

• 0.003 J/g°C

Tags

NGSS.HS-PS3-4

A 300.0 g piece of copper is heated and fashioned into a bracelet. The amount of energy transferred by heat to the copper is 66,300 J. If the specific heat of copper is 0.3845 J/g ⁰C, what is the change of the copper's temperature?

• 641 °C

• 7,650,000 Joules

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

When a  piece of aluminum foil is taken out of the oven and cools from 100° to 50°, What is the change in temperature?

• 50°

• 0°

• 100°

• 150°

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4