Thermodynamics: Energy Changes

Play an AI-generated podcast conversation about this lesson

What type of reaction involves the release of energy?

Thermochemical

Exothermic (correct)

Thermodynamic

Endothermic

What is the term for the flow of energy from a higher temperature to a lower temperature?

Thermal equilibrium

Heat

Internal energy

Heat transfer (correct)

Which of the following is an example of an endothermic reaction?

Rusting of iron

Burning logs

Melting ice (correct)

Combustion process

What is the study of heat and temperature and their relation to other forms of energy called?

Thermodynamics Signup and view all the answers

What is the opposite of thermal equilibrium?

None of the above Signup and view all the answers

What is the change in enthalpy represented by?

ΔH Signup and view all the answers

What is the result of heat transfer in a system when it reaches thermal equilibrium?

Heat stops flowing and temperatures balance out Signup and view all the answers

What is the relation between heat and work in thermodynamics?

Work can be used to create heat, and heat can be used to create work Signup and view all the answers

What type of reaction is represented by the process of freezing water into ice?

Exothermic reaction Signup and view all the answers

What is the application of exothermic and endothermic reactions in instant cold and hot packs?

To treat sports injuries Signup and view all the answers

What is the direction of heat transfer?

From higher to lower temperature Signup and view all the answers

What is the significance of ΔH in a reaction?

It represents the change in enthalpy of the reaction Signup and view all the answers

What type of reaction is represented by the process of photosynthesis?

Endothermic reaction Signup and view all the answers

What is the term for the internal energy of a system?

Internal energy (U) Signup and view all the answers

What happens to the energy during an exothermic reaction?

Energy is released from the reactants Signup and view all the answers

Thermodynamics: Energy Changes

Podcast Beta

Questions and Answers