Internal Energy and Specific 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

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

the symbol for specific latent heat is

• c

• $l$

• Q

• m

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

• $l=\frac{E}{m}$

• c = E/(mΔƟ)

• E = mcΔƟ

• $E=ml$

No more energy can be removed from matter at:

• its freezing point
• 0°C
• absolute zero
• 273 K

Tags

NGSS.MS-PS1-4

Heat transfer occurs:

• in many directions
• both from warm objects to colder ones and from cold objects to warmer ones
• only from warm objects to colder ones
• only from cold objects to warmer ones

Tags

NGSS.MS-PS1-4

A measure of the average kinetic energy of the individual particles in an object is called:

• thermal energy
• conduction
• convection
• temperature

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Energy that moves particles of matter is 

• temperature
• thermal energy
• heat
• friction

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The temperature of a substance increases as___.

• the substance expands
• the average kinetic energy of its particles increases
• the substance's volume increases
• the substance's mass increases

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

if 334000 J of heat is required to change state of 1 kg of ice into water then heat of fusion is

• 668000 J/kg

• 334000 kg

• 334000 J/kg

• 668000 J

Tags

NGSS.HS-PS3-1