Thermochemistry

The movement of thermal energy from one thing to another.

• Heat transfer
• Potential energy
• Law of conservation
• Specific heat

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

Energy can neither be created nor destroyed; only transformed from one form to another.

• First Law of Thermodynamics
• Second Law of Thermodynamics
• Third Law of Thermodynamics
• Law of Conservation of Matter

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-3

In this type of system heat or energy flows out:

• Specific Heat
• Heat
• Endothermic
• Exothermic

This quantity of energy depends on the type of matter or object and the chemical composition.

• Mass
• Heat
• Heat Capacity
• Endothermic

Is entropy increasing or decreasing when the phase change moves from a solid to liquid to gas?

• Increasing
• Decreasing

A measure of the disorder of the system.

• Enthalpy
• Endothermic
• Entropy
• Exothermic

Calculate delta T if a system's temperature decreases from 50 degrees Celsius to 18 degrees Celsius.

• 50
• 68
• -32
• 32

žDetermine the energy (in kJ) required to raise the temperature of 100.0 g of water from 20.0 C to 85.0 C? The specific heat of water is 4.184 J/(gxC)

• 5kJ
• 4,182 J
• 27,196 J
• 27.20kJ

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-4

How much energy would be needed to heat 450 grams of copper metal from a temperature of 25.0ºC to a temperature of 75.0ºC? (The specific heat of copper at 25.0ºC is 0.385 J/g ºC.)

• 4,000 J
• 8,700 J
• 5,000 J
• 3,578 J