Specific heat capacity and latent heat

There are four main processes in changing of phase, and they are

• Melting

• Boiling

• Condensation

• All the above

Tags

NGSS.MS-PS1-4

Latent heat is

• the heat absorbed or released at a boiling process during a change of phase

• the heat absorbed or released at a constant temperature during a change of phase

• the heat absorbed or released at a constant temperature during a change of phase of 1 kg object

• the heat absorbed or released by an object to increase or decrease its temperature by 1 degree Celcius

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The heat absorbed by melting a solid is known as

• latent heat of fusion

• latent heat of solid

• latent heat of liquid

• latent heat of vaporisation

Tags

NGSS.MS-PS1-4

specific latent heat of vaporisation is

• the amount of heat required to change 1 kg of the substance from the solid to liquid phase without change in temperature

• the amount of heat required to change 1 kg of the substance from the liquid to gaseous phase without change in temperature

• the amount of heat required to change the temperature 1 kg of the substance by 1 degree Celcius

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the formula to calculate specific latent heat of vaporisation?

• L = Q/m

• c = Q/(mΔƟ)

• Q = mcΔƟ

• Q = mL

Tags

NGSS.MS-PS1-4

Water molecules have the greatest kinetic energy in

• Ice at 0 ⁰C

• Water at 90 ⁰C

• Water at 373 K

• Steam at 150 ⁰C

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

• 67 800 J

• 6 7800 J

• 678 J

• 67.8 J

Tags

NGSS.HS-PS3-1

The amount of energy required to raise the temperature 1ºC for every kilogram is called____?

• Thermal Energy
• Specific Heat Capacity

• Temperature
• Kinetic Energy

Tags

NGSS.HS-PS3-4

Water has a specific heat of 4184 J/(kg ºC).  

Wood has a specific heat of 1760 J/(kg ºC).  

What material needs more energy to raise the temperature 1 ºC

• Wood
• Water
• Both are the same

If I heat up 2 pans of water one has 100 mL in it and one has 1000 mL.

Which one heats up the fastest?

• 100 mL
• 1000 mL
• They both heat up at the same speed
• They cool down.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4