Potential Energy
The unit used for potential energy
What is a kilojoule (kJ)?
This greek letter represents "change" in a thermodynamic equation
Using this symbol in a chemical equation shows that the reaction is reversible
What is a double-headed arrow?
This type of solution is a homogenous mixture that has dissolved all of the solute it can hold.
What is a saturated solution?
This can be either potential or kinetic
What is energy?
You need this for a chemical reaction to occur (break pre-existing bonds)
What is activation energy?
Energy cannot be created or destroyed, but it can be __________ between systems.
What is transferred?
When the concentrations of products and reactants are constant, but the reactions are still occurring in both directions, it is in this type of equilibrium
What is dynamic equilibrium?
This type of reaction is highly exothermic and always produces carbon dioxide and water
What is a combustion reaction?
Le Chatelier's Principle describes the effects of stress on chemical reactions in this state
What is equilibrium?
The heat of reaction is positive for this type of reaction
What is an endothermic reaction?
This is defined as the amount of disorder in a system
What is entropy?
If a reaction is at equilibrium, you will see this feature on a graph of concentration vs. time
What is a plateau?
When two nonmetal atoms have the same electronegativity, they can form this kind of bond
What is a nonpolar covalent bond?
If a salt dissolves in water and the temperature of the solution decreases, it is this type of reaction
What is an endothermic reaction?
This is a type of protein in our bodies that can speed up the rate of a reaction
What is an enzyme?
The sign of this value determines whether or not a reaction will occur spontaneously
What is Gibbs' Free Energy? (delta G)
Adding this to a reaction will speed up the reaction rate, but will not affect equilibrium
What is a catalyst?
This is the chemical name of KMnO4
The difference between the potential energy of the products and reactants shows the change in this value
What is enthalpy (of reaction)?
This is the amount of energy, in joules, that is released when 1 mole of ammonia is formed from nitrogen and hydrogen gas.
What is 45,900 joules?
To determine Gibbs' Free Energy, you need these three values.
What are delta H (change in enthalpy/heat of reaction), temperature, and delta S (change in entropy).
The dissolution of a salt has an exothermic forward reaction at room temperature and reaches equilibrium when the solution is saturated. If the change in entropy is positive, this word describes the reaction.
What is spontaneous?
This is the name of the scientist whose scientific work influenced the atomic model we accept today.
Who is Erwin Schrodinger?
According to collision theory, only a certain fraction of collisions between reactants are these
What are effective collisions?