THERMAL PHYSICS P2

Question 1

Different States Of Water

Answer 1

Ice

Water

Steam

Question 2

Ice

Answer 2

Molecules Close Together

Molecules Vibrate In Fixed Position

Strong Intermolecular Forces b/w Molecules

Question 3

Water

Answer 3

Molecules Close Together

Molecules slide Past Eachother

Intermolecular Forces b/w Molecules Are Weaker Than In Ice, Stronger In Steam

Question 4

Steam

Answer 4

Molecules Far Apart

Molecules Able To Move Freely

Almost No Intermolecular Forces b\w Molecules

Question 5

More Energy The Molecules Have

Answer 5

The Higher Their Temp

Question 6

Which State’s Molecules Have Least Kinetic Energy

Answer 6

Solid

Question 7

Which State’s Molecules Have Most Kinetic Energy

Answer 7

Steam

Question 8

Latent Heat Of Vapourisation

Answer 8

Energy Required To Boil (Vapourise) 1Kg Of Water Called Specific Latent Heat Of Vapourisation

Question 9

Latent Heat Of Vaporisation Equasion

Answer 9

Q = 🔼mL

Question 10

What is Q in Q=🔼mL

Answer 10

Energy Transferred

Question 11

What Is 🔼m in Q=🔼mL

Answer 11

Mass Of Water That Has Been Vapourised

Question 12

What Is L In Q=🔼mL

Answer 12

Specific Latent Heat Of Vaporisation Of Water

Question 13

Specific Heat Capacity

Answer 13

Q=mc🔼T

Question 14

Q In Q=mc🔼T

Answer 14

Energy Transferred To Water ( J )

Question 15

m in Q=mc🔼T

Answer 15

Mass Of Water Heated (Kg)

Question 16

c In Q=mc🔼T

Answer 16

Specific Heat Capacity Of Water (4200 J Kg-1 K-1)

Question 17

🔼T In Q=mc🔼T

Answer 17

Temperature Change (K)

Question 18

An Object Is Heated Reaches Thermal Equilibrium When:

Answer 18

Energy Flowing Into Object = Energy Flowing Out Of Object

Temp Stops Increasing & Reaches A Maximum

Question 19

When Object Heated, Temp Increases. thermal Capacity Of Object Is:

Answer 19

Amount Of Thermal Energy Required To…

Increase Temp Of Object By 1K

Question 20

Solid gas

Answer 20

Mol held together by strong IMF

Gain energy & Vibrating more as temp of ice ⬆️

Question 21

Melting

Answer 21

Energy of mol stay contact

Energy transferred to ice used break IMF attraction & turn solid ice into liq water

Question 22

Liquid water

Answer 22

IMF weaker than Q&P

Mol Able To slide around together

Mol gain kinetic energy & move fast as temp ⬆️

Question 23

Boiling

Answer 23

Energy of mol stay constant

Energy transferred to water used to break IMF of Attraction

Turn liq water into gaseous steam

Question 24

Gaseous stream

Answer 24

IMF weaker

Mol move freely

Mol gain kinetic energy & move fast as temp ⬆️