LT7.2 Heat Transfer (Regular)

A high specific heat means...

• a substance requires less energy for its temperature to change.

• a substance requires more energy for its temperature to change.

• a substance heats up very quickly.

• the substance's particles have a high average kinetic energy.

Tags

NGSS.HS-PS3-4

The temperature of 20 grams of water changes from 25℃ to 20℃. How much heat energy moved from the water to the surroundings? The specific heat of water is 4.18 J/(g℃).

• 418 J

• 209 J

• 83 J

• 4.18 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

What does ΔT represent?

• celsius - T

Tags

NGSS.HS-PS1-5

The amount of energy required to raise the temperature 1ºC for every gram is called

• thermal energy.

• specific heat.

• temperature.

• kinetic energy.

What is the equation to measure change in thermal energy/heat?

• Q=mc∆T

• Q=mc

• Q= ∆mcT

• m=QC

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

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

• 50°C

• 0°C

• -50°C

• 150°C

Tags

NGSS.MS-PS1-4

Which of the following best explains why the sand at the beach is hotter than the water?

• Sand has a higher specific heat than water.

• Sand has a lower specific heat than water.

• Sand has a greater mass than water.

• Water has a greater mass than sand.

The specific heat of aluminum is 0.21 J/(g°C). What amount of heat is transferred when a 10 g piece of aluminum foil is taken out of the oven and cools from 100°C to 50°C?

• -105 J

• 10.5 J

• 1.05 J

• 105 J

Tags

NGSS.HS-PS3-4

Calculate the heat needed to raise the temperature of 0.25 g of aluminum 7°C. The specific heat of aluminum is 0.89 J/(g°C).

• 1.558 J

• -1.558 J

• 514 J

• -514 J

Tags

NGSS.HS-PS3-4