Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
21 Cards in this Set
- Front
- Back
|
Calorimeter
|
The NRG absorbed/released as heat in a chem. or phys. change is measured by this
|
|
|
Joule
|
SI unit of heat and all other forms of NRG
|
|
|
Temperature
|
Measure of the average kinetic NRG of the particles in a sample of matter.
|
|
|
Thermochemistry
|
Study of transfer of NRG as heat that accompany Chemical and physical changes
|
|
|
Heat
|
NRG transferred between samples of matter
|
|
|
specific heat
|
NRG required to raise one gram of substance 1 degree celcius or kelvin
|
|
|
Heat of reaction
|
quantity of NRG released and or absorbed as heat during a chemical reaction
|
|
|
Thermochemical Equation
|
Equation including quantity NRG released/absorbed as heat during the reaction as written
|
|
|
enthalpy change
|
NRG lost/absorbed by system as heat during a process constant pressure
|
|
|
Molar heat of formation
|
NRG released absorbed as heat when one mole of compound is formed by combination
|
|
|
Heat of combustion
|
NRG released as heat by complete combustion of one mole of a substance
|
|
|
Hess's Law
|
The overall enthalpy change in a reaction is equal to the sum of enthalpy changes for the individual steps in the process
|
|
|
Entropy
|
Measure of the degree of randomness of the particles in a system
|
|
|
Free Energy
|
Combined enthalpy-entropy function
|
|
|
Free energy Change
|
At a constant pressure and temperature, Change G of a system is defined as the difference between the change in enthalpy, change H and the product of the Kelving temperature and the entropy change, which is defined as T change S
|
|
|
Reaction mechanism
|
Step by step sequence of reactions by which the overall chemical change occurs
|
|
|
Intermediates
|
Species that appear in some steps but not in the net equation.
|
|
|
Homogeneous reaction
|
reaction whose reactants + products exist in a single phase
|
|
|
Collision Theory
|
The set of assumptions regarding collisions and reactions
|
|
|
Activation NRG
|
Minimum energy required to transform the reactants into an activated complex
|
|
|
Activated complex
|
A transitional structure that results from an effective collision and that persists while old bonds are broken and new bonds are formed
|
