Specific Heat Capacity

The following results were obtained in an experiment to determine the specific heat capacity of water.

Mass of water = 0.5 kg, temperature rise = 8.2 K, time = 360s, power rating of heater = 50W.

Is the value higher or lower than the true specific heat capacity of water (4200 Jkg-1 K-1 and why?)

Tags

NGSS.HS-PS3-4

Calculate the energy absorbed by 30 g of 100 ⁰C water that is turned into 100 ⁰C.

• 67 800 J

• 6 7800 J

• 678 J

• 67.8 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

The specific heat of platinum is 0.133 J/g°C. How much heat(Q) is released when a 10 g piece of platinum cools from 100°C to 50°C?

• 66.5 J

• 665 J

• 0.0266 J

• 0.665 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

What unit do you use to measure Thermal Energy?

• J/Kg ºC
• Kg
• ºC
• J

A 2kg block of metal at 650°C is dropped into 10kg of a liquid at 30°C. What is the final temperature of the mixture?

[The specific heat capacity of the metal = 500 J/kg K

The specific heat capacity of the metal = 3000 J/ kg K]

20 g of water. specific heat of water is 4.18 J/g°C. temperature changes from 25° C to 20° C, how much heat energy (Q) moves from the water to the surroundings?

• 418 J

• 209 J

• 83 J

• 4.18 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

_______________ describes how much energy is required to raise an object's temperature.

• Conduction
• Convection
• Specific Heat
• Radiation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

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.HS-PS3-1

What is a transfer of heat energy by electromagnetic waves?

• Radiation
• Convection
• Conduction
• Heat

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

What is the transfer of heat by direct contact?

• Convection
• Electromagnetic waves
• Radiation
• Conduction