10 Questions
What is the defining characteristic of exothermic reactions?
The negative change in enthalpy (ΔH)
Explain why exothermic reactions are generally spontaneous.
Exothermic reactions occur spontaneously because they are thermally favored, with the products having lower energy than the initial reactants.
What is the energy converted into during an exothermic reaction?
Different forms, such as heat and light
What is Thermochemistry?
Thermochemistry is a branch of thermodynamics that focuses on the energy changes that take place during chemical reactions.
How does the excess energy from breaking old bonds contribute to further reactions in exothermic reactions?
The excess energy becomes the energy needed to initiate and propagate the reaction.
What is the origin of the term 'exothermic'?
From the Greek words 'exo' meaning 'out' and 'thermos' meaning 'heat'
Define the Law of Conservation of Energy.
The Law of Conservation of Energy states that energy is neither created nor destroyed in a system, but rather, it is transformed from one form to another.
What does energy change refer to in a system?
Energy change refers to the movement of energy within a system, whether the system is gaining or losing energy.
List some processes that can result in energy change.
Chemical reactions, phase changes, mechanical work, electrical circuits, and biological processes.
In how many stages does a typical reaction occur?
A typical reaction occurs in three stages: (1) initiation, (2) propagation, and (3) termination.
Explore the concept of energy change in chemical reactions within the field of thermodynamics, specifically Thermochemistry. Learn about the Law of Conservation of Energy and how energy is transformed during reactions.
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