Thermodynamics Review

heat always travels from _____ to ______ objects

• hot to cold
• cold to hot
• cold to cold
• hot to hot

Tags

NGSS.HS-PS3-4

At higher temperatures

• particles in an object have less energy
• particles in an object move faster
• a gas contracts

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The heat required to raise the temperature of a SUBSTANCE by 1∘C

• calorie
• joule
• specific heat
• 4.184 J

Formula for solving specific heat problems

• q = mcΔT
• H = ΔH x moles
• H = ΔH x grams
• products - reactants

Tags

NGSS.HS-PS3-4

Given this heat curve for a sample of water, which of the following is NOT true?

• The sample changed phase

• This sample had a temperature decrease

• This sample condensed (gas turned into liquid)

• This sample froze

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

How many Joules of energy are required to change 10 gram of liquid water from 20 C to 90 C?

• 1463 J

• 2926 J

• 29,260 J

• 14,630 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

Freezing

• Liquid to solid

• Solid to liquid

• Liquid to gas

• Gas to solid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Vaporization

• Gas to plasma

• Liquid to solid

• Liquid to gas

• Solid to gas

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Example of an endothermic phase transition

• Deposition

• Condensation

• Freezing

• Sublimation

Tags

NGSS.MS-PS1-4

What line segment represents only the solid state?

• A-B
• B-C
• C-D
• D-E

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4