Units 1 & 2
The law defining the potential energy between two charged particles based on the product of their charges divided by the square of the distance between the charges
What is Coulomb's Law?
An ideal relationship for gases relating pressure, volume, moles of gas and temperature
What is the Ideal Gas Law?
This is consumed in a reaction then reformed, providing an alternate mechanism with a lower Ea.
What is a catalyst?
At equilibrium, the ratio of the concentrations of the products of a reaction raised to their stoichiometric coefficients divided by the concentrations of the reactants raised to their stoichiometric coefficients
What is the equilibrium constant (K)?
This element has the following electron configuration:
1s2 2s2 2p6 3s2 3p6
What is Ar?
These ions are not considered when writing a net ionic equation
What are spectator ions?
A natural log plot of concentration versus time for this type of reaction will yield a straight line
What is a first order reaction?
This principle states that when a chemical system at equilibrium is disturbed, the system shifts in a direction that minimizes/offsets the disturbance
What is Le Chatelier's Principle?
This value is typically in the 7.3-7.4 range for blood
What is the pH?
The typical charge for Barium (Ba) in an ionic compound
What is +2?
The strongest intermolecular force between water molecules
What is hydrogen bonding?
The energy barrier that must be surmounted for reactants become products
What is the activation energy?
The ratio, at any point in the reaction, of the concentrations of the products of a reaction raised to their stoichiometric coefficients divided by the concentrations of the reactants raised to their stoichiometric coefficients
What is the reaction quotient (Q)?
Two mandatory safety items to wear whenever working in the chemistry laboratory
What are goggles (or safety glasses) and gloves?
The number of 12C atoms in exactly 12 g of 12C, equal to 6.022 x 1023
What is Avogadro's number?
A method to separate components of a solution due to differences in attractive forces among the components to mobile (i.e. solvent) and stationary (e.g. paper) phases
What is chromatography?
If the overall enthalpy change for breaking the C-H bonds in CH4 is 1658 kJ/mol, the _____________ for each C-H bond must be 414 kJ/mol.
What is the average bond enthalpy?
The point in an acid-base titration when the number of moles of acid is stoichiometrically equal to the number of moles of base.
What is the equivalence point?
A Bronsted-Lowry proton (H+) donor with a Ka>1
What is a strong acid?
The geometry and bond angle of a water molecule
What is bent (tetrahedral) and <109.5 degrees?
In the following reaction, 3 moles of oxygen combined with 8 moles of hydrogen could only produce 6 moles of water, since oxygen was the ____________.
2 H2(g) + O2(g) --> 2 H2O(l)
What is the limiting reactant?
This states that if a chemical reaction can be expressed as a series of steps, then the overall heat of reaction equals the sum of the heats of reactions for each step.
What is Hess's Law?
The pH and the pKa of a weak acid are equivalent at his point
What is the half-equivalence point (of an acid-base titration)?
Sir Joshua Reynolds quote, posted by Thomas Edison in all his labs in New Jersey, and emphasized by Mr. Samuelson throughout the year
"There is no expedient to which a man (or woman) will not resort to avoid the true labor of thinking."