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 Cations & Anions Naming Ionic Compounds Law of Conservation of Mass Empirical and Molecular Formulas Chemical Reactions and Equations Balancing Chemical Equations Group Classification and Characteristics The Periodic Table Alkyl Halide Reactions Nomenclature of Alcohols Alcohol Protecting Groups Nomenclature of Heterocycles Aromatic Heterocyclopentadienes Synthesis of Amino Acids Peptide Sequencing Nature of Light Photons and Photoelectric Effect Wavelike Properties of Matter Atomic Line Spectra Quantum Numbers Electronic Structure Principles Electron Configurations Ground State and Excited States Electron Affinity Types of Bonding Ionic Compounds Electron Configuration of Ions Ionic Radius Formation of Ionic Solids Lewis Structures Exceptions to the Octet Rule Electronegativity Molecular Shape VSEPR Theory Electron and Molecular Geometry Deviation from Ideal Bond Angles Molecular Geometry and Polarity Molar Mass and Mole Number Valence Bond Theory Single and Multiple Bonds Hybrid Orbitals Molecular Orbital Theory Acid-Base Theories Oxidation-Reduction Reactions Types of Chemical Reactions Atomic Masses Percent Composition by Mass Combustion Analysis Stoichiometry Limiting Reactant Reaction Yield Molarity vs. Molality Electrolytes Acid-Base Titrations Gas Properties The Gas Laws Gas Mixtures The Kinetic Molecular Theory of Gases Internal Energy, Heat and Work Enthalpy Hess's Law Standard Enthalpies of Formation Bond Enthalpies Calorimetry and Heat Capacity Intermolecular Forces Properties of Liquids Vapor Pressure Types of Solutions Gas Diffusion and Effusion Mean Free Path Reaction Rates First-Order Reactions Radioactive Decay Collision Theory The Arrhenius Equation Concentration Units Vapor-Pressure Lowering Boiling-Point Elevation The Concept of Equilibrium Le Châtelier’s Principle Using Equilibrium Expressions Acid-Base Concepts The pH Scale Acid-Base Indicators Solubility Equilibria Precipitation of Ionic Compounds Standard Entropies Oxidation-Reduction Reactions Half Reactions Balancing Equations for Oxidation-Reduction Reactions Electric Energy and Charge Galvanic Cells Cell Diagrams Lewis Structures The Mole and Avogadro's Number Core and Valence Electrons Effective Nuclear Charge The Octet Rule Lone Pair Effect Factors Favoring SN1 or SN2

Knowledge Base - Chemistry Coach

1
28/11/2021
Cation vs. Anion
Cation vs. Anion
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...
anion anode cathode cation electron lattice energy negatively (-) charged ion nuclear charge polarity positively (+) charged ion proton valence orbitals
2
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
3
07/11/2021
Quantization of Kinetic Energy
Quantization of Kinetic Energy
More than 120 years ago, Max Planck formulated the mathematical theory of quantized energy in his endeavor to explain black body radiation...
atomic spectra blackbody blackbody radiation discrete Planck’s constant quantization
4
07/11/2021
The Branches of Chemistry
The Branches of Chemistry
Understanding the various branches of chemistry can help us appreciate just how prolific a discipline it is. In today's world, chemists are not limited to just a short list of disciplines...
Physical Chemistry Organic Chemistry Inorganic Chemistry Chemical Kinetics Chemical Physics Electrochemistry Femtochemistry Geochemistry Photochemistry Quantum chemistry Solid-state chemistry Spectroscopy Stereochemistry Surface science Thermochemistry Calorimetry Biochemistry Neurochemistry Molecular biochemistry Bioorganic chemistry Genetic engineering Biophysical chemistry Medicinal chemistry Organometallic chemistry Physical organic chemistry Polymer chemistry Click chemistry Bioinorganic chemistry Cluster chemistry Materials chemistry Nuclear chemistry Analytical chemistry Astrochemistry Cosmochemistry Computational chemistry Environmental chemistry Green chemistry Supramolecular chemistry Theoretical chemistry Wet chemistry Agrochemistry Atmospheric chemistry Chemical engineering Chemical biology Chemo-informatics Flow chemistry Immunohistochemistry Immunochemistry Chemical oceanography Materials science Mathematical chemistry Mechanochemistry Molecular biology Molecular mechanics Nanotechnology Petrochemistry Pharmacology Phytochemistry Radiochemistry Sonochemistry Synthetic chemistry
5
19/10/2021
What are Patterns of Electrons?
What are Patterns of Electrons?
Can You See a Pattern of Electrons? Yes, in fact, it's easier than most people think. Once you know the basics, of course!
6
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.