Thermochemistry Review

Heat content of a system

• Calorimeter

• Calorie

• Joule

• Enthalpy

• Specific heat

Tags

NGSS.HS-PS3-4

The energy required to melt a solid at its melting point

• Heat of reaction

• Heat of formation

• Hess's Law of heat summation

• Heat of fusion

• Heat of solution

Tags

NGSS.HS-PS3-4

Which of these phase changes is an endothermic process?

• Condensation

• Evaporation

• Freezing

• All phase changes are endothermic

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the specific heat of a substance if 1560 J are required to raise the temperature of a 312-g sample by 15°C?

• 0.033 cal/g°C

• 0.33 cal/g°C

• 0.99 cal/g°C

• 1.33 cal/g°C

Tags

NGSS.HS-PS3-1

The specific heat of silver is 0.24 J/g°C . How many joules of energy are needed to warm 4.37 g of silver from 25.0°C to 27.5°C?

• 2.62 J

• 0.14 J

• 45.5 J

• 0.022 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

The amount of heat released by the complete burning of 1 mole of a substance

• Specific heat

• Heat of combustion

• Heat capacity

• Heat of fusion

SL

Tags

NGSS.HS-PS1-4

• $-2523kJ\ mol^{-1}$

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-4

• T > 1,114K

• T > 298K

• T > 854K

• At all temperatures

Tags

NGSS.HS-PS1-4

When a reaction is endothermic, ΔH is 1 and heat is 2 by the system.

• negative 2: released

• negative 2: absorbed

• positive 2: absorbed

• positive 2: released

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4