Antimony is element number 51 and its chemical symbol is Sb. This video is one of the 118 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.
Aqua Regia is a special combination of two acids which can dissolve gold.
Argon, an inert noble gas, is element number 18. This video is one of the 118 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.
The halogenation of benzene
The aromaticity of pyridine and pyrimidine.
The aromaticity of pyrrole, imidazole, and thiophene.
The aromaticity of benzene
The video resource "Aromatics and Cyclic Compounds - Crash Course Chemistry #42" is included in the "Chemistry" course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.
Because of its radioactivity and short half life, Astatine is an element few chemists come into contact with. This video is one of the 118 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.
The video resource "Atomic Hook-Ups - Types of Chemical Bonds: Crash Course Chemistry #22" is included in the "Chemistry" course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.
In this video Paul Andersen explains how the atomic model has changed over time. A model is simply a theoretical construct of phenomenon and so when we receive new data we may have to refine our model. Ionization energy data resulted in the formation of a quantum model that more accurately reflected the atom.
Mr. Andersen describes atomic structure and tours the periodic table.
Mr. Andersen explains the basics of balancing chemical equations. A visual guide shows you how to change coefficients to balance the atoms in reactants and products.
We've added some new footage to our video about beryllium, filmed at the MAX-lab synchrotron in Sweden. This video is one of the 118 clips included in the periodic table of elements themed collection created by Brady Haran and the University of Nottingham in the UK.
In this video Paul Andersen explains how the structure of a biomolecule fits the function of the biomolecule. For example and enzyme must interact correctly with a substrate to lower the activation energy, The covalent and non-covalent interactions are both important in shaping large molecules.
The mechanism of the Birch Reduction
The effect of electron-withdrawing and electron-donating groups
Raising or lowering the boiling or freezing point of a solution by adding solute.
In this video Paul Andersen explains how the bond length and bond energy are calculated using an energy distance graph. The strength of the bond is determined by the charges in the constituent atoms. As the charge increases the bond energy increases and the bond length decreases.
The video resource "Bonding Models and Lewis Structures: Crash Course Chemistry #24" is included in the "Chemistry" course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.