Thermodynamics

What formula best defines specific heat?

Specific heat = heat / (mass x temperature change)

What is the heat required to raise the temperature of 1 gram of a substance by 1°C or 1 K?

Specific heat

How much energy does a copper sample absorb as heat if its specific heat is 0.384 J/g•°C, its mass is 8.00g, and it is heated from 10.0°C to 40.0°C?

92.2 joules

What is the specific heat of a copper piece if it requires 92.2 joules to raise its temperature from 10.0°C to 40.0°C?

0.384 J/g°C

How much heat is needed to raise the temperature of 1.82 Kg of water by 3.32°C?

25,347.7 J

What is the quantity of energy released or absorbed as heat during a chemical reaction called?

Heat of reaction

What is the specific heat of a material if a 6.0 gram sample absorbs 50.0 joules when heated from 30°C to 50°C?

To be calculated based on specific heat formula.

What is the specific heat of ethanol if a 193 gram sample requires heat energy to raise its temperature?

2.46 J/g°C

How much energy is saved by using the copper container instead of an aluminum container of mass 500g?

256 J/°C

Why does the temperature of water not change significantly on a hot day compared to air?

Water has a higher specific heat capacity than air.

What is a unit of energy needed to change 1 gram of water by 1 degree Celsius?

Specific heat

What happens to the average kinetic energy of particles as the temperature of a sample increases?

Average kinetic energy increases.

What is the heat of formation?

The energy involved in the creation of a compound from its elements.

If the Greek letter Δ represents a change in what?

Change in energy.

What is the specific heat capacity of zinc if a piece weighs 13.8 g and changes temperature during heat transfer?

To be calculated based on specific heat formula.

What specific heat of silver is calculated if 42 J heat is applied to a 5.0 gram sample from 0°C to 35.0°C?

0.24 J/g°C.

What is the change in enthalpy (ΔH) if two reactions have ΔH values of -658 kJ and +458 kJ?

-200 kJ.

In the context of thermodynamics, what does the process termed 'endothermic' indicate?

A reaction that absorbs heat and has a positive heat of formation.