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 Derived Units: Volume, Density, & Energy Uncertainty in Measurement Atoms and Elements States and Classification of Matter The Atomic Theory Atomic Numbers 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 Nomenclature of Heterocycles Aromatic Heterocyclopentadienes Synthesis of Amino Acids Peptide 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 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

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26/11/2021
Shapes of Molecules
Shapes of Molecules
Does Shape Matter in Molecular Geometry? What is the Difference Between Molecular Geometry and Molecular Shape? Explore the structure of molecules!
AXE method bonding pairs bonding patterns central atom ideal bond angle lone pair long-chain molecule molecular geometry molecular shape multiple bonds multiple central atoms non-polar physical properties polarity polar steric number structure of molecules VSEPR
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19/10/2021
Predicting the Relative Properties of Elements
Predicting the Relative Properties of Elements
In chemistry, it is important to understand the basics of chemical elements. The term "element" refers to the pure substances that consist of atoms with identical numbers of protons in their nuclei.
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19/10/2021
What is the Periodic Table?
What is the Periodic Table?
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
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17/10/2021
Energy and All of Its Potentials
Energy and All of Its Potentials
Energy is a central concept to chemistry, but what are these different kinds? Find out here!
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16/10/2021
What is the International System of Units?
What is the International System of Units?
The International System of Units consists of seven defining constants, seven base units, and 22 derived units.
International System of Units physical quantities defining constants base units derived units cesium hyperfine splitting frequency speed of light vacuum Planck constant elementary charge Boltzmann constant Avogadro constant Kinematic SI Derived Units Mechanical SI Derived Units Molar SI Derived Units Electromagnetic SI Derived Units Photometric SI Derived Units Thermodynamic SI Derived Units International System of Quantities Base Quantities Derived Quantities
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15/10/2021
A Quick Guide to the Properties of Matter
A Quick Guide to the Properties of Matter
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