H402 is the molecular formula as H2O is the ______ formula
What is empirical formula
100
energy required to convert reactants into
products; the difference between the energies of the activated complex and the
reactants
What is activation energy
100
positively charged atom; an atom that loses an electron
What is Cation
100
the energy required to REMOVE one electron from an atom of an element; measured in kJ/mol
What is ionization energy
200
Where opposite sides of a molecule are oppositely charged
What is bond polarity
200
6.02 x 10^23
What is Avogadro's Number
200
chemical reactions that produce or release energy; chemical
reactions in which energy is a product
What is exothermic reaction
200
when an atom absorbs energy and one or more of its electrons “jump” to an orbital further from the nucleus
What is excited state
200
all elements located in Group 1 on the periodic table except hydrogen; contains the most reactive metals
What is alkali metals
300
True or false; bonds with a greater wave length have a greater bond energy
What is false
300
molar mass of CH3COOH
What is 60.05 g/mol
300
a measure of the randomness associated with a chemical reaction
What is entropy
300
representation of an atom or molecule using only the element symbol and the valence electron arrangement
What is Lewis Dot Structure
300
the three rows of elements in the middle of the periodic table from scandium (Sc) to mercury (Hg)
What is Transition metals
400
Molecular structure consisting of an equatorial plane, an axis, and atoms separated by 90 degrees and 120 degrees
What is trigonal bipyramid
400
energy can neither be created nor destroyed; the energy of the reactants must be equal to the energy of
the products
What is conservation of energy
400
predicts that when a stress is applied to an equilibrium
mixture, the equilibrium will shift to relieve the stress (stresses include
temperature, pressure, concentration)
What is Le Chatelier’s Principle
400
used to describe the dual nature of matter; electrons behave like particles and energy
What is Quantum Theory
400
all elements located in Group 18 on the periodic table; inert (do not tend to react with atoms of other elements); have a full valence shell
What is Noble Gases
500
Valence
Shell
Electron
Pair
Repulsion
Theory
What is VSEPR Theory
500
(mass of part/mass of whole) x 100
What is percent mass equation
500
a substance that is neither a reactant nor a product, but
speeds up the rate of a chemical reaction by lowering activation energy/providing a
shorter or “alternate” pathway
What is Catalyst
500
states that electrons don’t travel in fixed orbits, but that we can use mathematic principals to predict where electrons are most likely to be
found
What is Wave-Mechanical Model
500
elements that can’t exist alone in nature; contain 2 identical atoms (N2, O2, F2, Cl2, Br2, I2, At2,
H2)