Definition

1. Noun:
   • The branch of chemistry concerned with the heat changes that accompany chemical reactions and physical transformations: Thermochemistry specifically studies the relationship between chemical action and the amount of heat energy either absorbed or released during these processes. It is a sub-discipline of physical chemistry.

Usage and Examples

• Noun:
  • Understanding enthalpy changes is a fundamental part of thermochemistry.
  • The laboratory experiment focused on the principles of thermochemistry by measuring the heat of combustion.
  • Her research in thermochemistry explores how energy is stored in chemical bonds.

Advanced Usage

• "Laws of thermochemistry": Refers to fundamental principles, such as Hess's Law, which govern the heat changes in chemical reactions.
  • The experiment was designed to demonstrate the laws of thermochemistry.

Variants and Related Words

• Thermochemical (adj): Relating to thermochemistry or involving the heat changes of chemical reactions.
  • They published a thermochemical analysis of the new compound.
• Calorimetry (n): The science of measuring the heat of chemical reactions or physical changes, which is a key experimental technique in thermochemistry.
  • Accurate calorimetry is essential for thermochemical studies.

Synonyms

• Chemical thermodynamics (n): A closely related field that more broadly applies thermodynamic principles to chemical systems, often overlapping with thermochemistry.

Noun

1. the branch of chemistry that studies the relation between chemical action and the amount of heat absorbed or generated