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Chemistry

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Hugh Luettgen

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2y ago
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Cards in this guide (11)
What is thermal energy

The total kinetic energy of the particles in a system

What is thermodynamics

the study of the movement of energy and heat.

or

Thermodynamics is the branch of physics concerned with the conversion of different energy forms.

•DeltaG (rxn) = DeltaG (pdts) - DeltaDG (rcts) •DeltaG°(rxn) = -R T ln K •

Which metal has the highest specific heat capacity

Lithium is the metal that has the highest specific heat capacity.

Why does temperature stay constant during a phase change

To put it in simple terms, all of the energy that would normally increase the temperature of the object, is being used to convert the object from one phase to another.

Once the object has completely changed to the new phase, the energy is not needed for phase change and raises the temperature of the object.

Because energy is being used to overcome intermolecular forces(apex)

Hess's law is based on what principle

conservation of energy

What does the difference in potential energy between the reactants and products represent

It represents the change in enthalpy for the reaction.

What does the field of thermodynamics relate to

Changes in energy in systems

What does S0 mean

the system has become more random

What statements about airplane and rocket flight is true

Only one requires air molecules to generate lift.

What is heat included in the equation of an endothermic reaction

The heat in an endothermic reaction is included as a reactant on the left side of the equation, and has a positive value.

Which of the following is the best thermal insulator APEX

Air

(Explanation): water has a high specific heat capacity, but it can boil. stone (😂) also is a good thermal insulator, but it can get really hot. Metal is a very good thermal conductor, so it is definitely not that. Therefore, air is the best (its also really hard to boil).

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