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 Dimensional Analysis 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

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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
Dalton's Atomic Theory
Dalton's Atomic Theory
Dalton’s Atomic Theory: Find out how it works and why this scientific theory has been critical to understanding our world today.
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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