{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}


thermochemistry-definitions - Thermochemistry background...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Thermochemistry background: Definitions from 5.3, 5.4 1. Thermochemistry – The study of the energy changes in chemical reactions. 2. System – That part of the universe we wish to study. 3. Surroundings – That part of the universe other than the system being studied. 4. Boundary – That which divides a system from its surroundings. 5. State of system – The set of specific values of the physical properties of a system (composition, state, concentration, temperature, pressure, volume). Change of state 6. – Transformation of matter from one physical state to another. In thermochemistry, any change in a variable used to define the state of a particular system. 7. Endothermic – A change in which a system’s internal energy increases (thus energy is absorbed) 8. Exothermic – A change in which a system’s internal energy decreases (thus energy is released) 9. Heat of reaction (q) – The heat exchanged between a system and its surroundings when the entire change in energy involves heat. Exothermic is –. Endothermic is +.
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}