Knowledge Base
Atomic Structure
Electron Configuration
Ionic and Covalent Bonds
Nucleophile vs. Electrophile
IUPAC Nomenclature
Types of Isomers
Halogenation of Alkanes
Scientific Method and Notation
The International System of Units
The Properties of Matter
Scientific Measurement
Uncertainty in Measurement
Atoms and Elements
States of Matter
The Atomic Theory
Atomic Structure
Ions - Cations & Anions
Naming Binary Compounds
The Law of Constant Composition
Empirical vs. Molecular Formula
Chemical Reactions
Balancing Chemical Equations
Group Properties
The Periodic Table
Alkyl Halide Reactions
Nomenclature of Alcohols
Alcohol Protecting Groups
Nitration of Benzene
Nomenclature of Heterocycles
Aromatic Heterocyclopentadienes
Synthesis of Amino Acids
Amino Acids Sequencing
Wave Model of Light
Photons and Photoelectric Effect
Wave-Particle Duality
Atomic Line Spectra
Quantum Numbers
Electronic Structure Principles
Arrangement of Electrons
Excited States
Periodicity in Properties of Elements
Types of Bonding
Ionic Compounds
Electron Configuration of Ions
Sizes of Ions
Ionic Bond Energies
Lewis Structures
Exceptions to the Octet Rule
Electronegativity & Polarity
VSEPR Theory
Prediction of Molecular Geometry
Deviation from Ideal Bond Angles
Molecular Geometry and Polarity
Isomers
Naming Acids
Masses and Mole Number
Valence Bond Theory
Multiple Bonds
Hybrid Orbitals
Molecular Orbital Theory
Acid-Base Theories
Oxidation-Reduction Reactions
Types of Reaction
Average Atomic Mass
Percent Composition by Mass
Combustion Analysis
Stoichiometry
Limiting Reactant
Percent Yield
Molarity vs. Molality
Electrolytes
Acid-Base Titrations
Gas Properties
Gas Laws
Ideal Gas Law – Molar Volume, Molar Mass and Density
Dalton’s Law of Partial Pressures
Kinetic Theory and Speed Distribution
Internal Energy, Heat and Work
Enthalpy
Enthalpy Relationships
Enthalpy of Formation
Bond Enthalpies
Heat Capacity
Intermolecular Forces
Properties of Liquids
Vapor Pressure
Colloids
Graham’s Law of Effusion
Mean Free Path
Reaction Rates
First-Order Reactions
Radioactive Decay
Activation Energy
Arrhenius Equation
Solution Concentrations
Raoult’s Law
Boiling Point Elevation
Chemical Equilibrium
Le Châtelier’s Principle
Approach to Equilibrium
Acids and Bases
pH and pOH
Buffers
Indicators
Solubility-Product Constants
Formation of Complexes
Precipitation Criteria
Entropy Changes for Reactions
Oxidation-Reduction Reactions
Half Reactions
Balancing Equations for Oxidation-Reduction Reactions
Electric Energy and Charge
Electrochemical Cells
Cell Diagrams
Lewis Structures
The Mole
Core vs. Valence Electrons
Effective Nuclear Charge
The Octet Rule
Lone Pair Effect
Factors Favoring SN1 or SN2
Knowledge Base - Chemistry Coach

Cation vs. Anion vs. Ion... What is the difference? Well, both cations and anions are ions, they just have different physical properties. Cations are formed when...

What is a Simple Definition of the Periodic Table? The periodic table can most simply be described as a chart that organizes the chemical elements of matter into an easy-to-identify visual flow chart.
periodic table
chemical elements of matter
periods
groups
atomic number
electron shell configuration
filling of electrons in valence shells
Dimitri Mendeleev
unstable elements
transactinides
element blocks
s-block
p-block
d-block
f-block
non-reactive elements
metals
metalloids
nonmetals
g-block
extended periodic table
IUPAC
The Long Periodic Table
The 32-Column Periodic Table
Madelung rule
Aufbau principle

What are the properties of matter? Learn about the structure of matter, different states of matter, physical vs. chemical properties, and more!
intensive properties
chemical potential
concentration
density
magnetic permeability
melting point
boiling point
specific gravity
molality
pressure
refractive index
specific conductance
electrical conductivity
specific heat capacity
specific internal energy
specific rotation
specific volume
standard reduction potential
surface tension
temperature
thermal conductivity
viscosity
extensive properties
amount of substance
enthalpy
entropy
Gibbs energy
heat capacity
Helmholtz energy
internal energy
mass
volume
chemical properties
ability to corrode
acidity
basicity
substance
chemical stability
combustibility
enthalpy of formation
flammability
heat of combustion
preferred oxidation state
toxicity
average atomic mass
atomic size
electron configuration
electronegativity
Pauling
First Ionization Energy
radii
Van der Waals
covalent
valence electrons
electron gain enthalpy
electron affinity
Properties of Matter
physical properties
extensive
intensive
chemical properties
states of matter
properties of elements
periodic table
compound
homogeneous mixture
heterogeneous mixture