Assumes that covalent bonds are formed when atomic orbitals on different atoms overlap and the electrons are shared.
Latest Articles
-
Chemistry of the sky
Chemistry can teach us about the composition of celestial bodies and determine their age.
-
Ozone
We breathe 24 hours a day, 7 days a week, consuming about 25 kg of air every day. It turns out that we practically predetermine our health by the air we breathe.
-
Gas of rotten eggs
If you happen to break a rotten egg, then you know the smell of hydrogen sulfide, because the stench of the spoiled egg depends on of its presence in rotting protein substances.
-
The most expensive metal in the world
Do you think the most expensive metal is gold? No! On earth there are more valuable metals. But we need to divide the value of metals that occur in nature, and metals - isotopes, which are obtained in special laboratories. Let’s look at natural metals first.
-
Creating Malachite egg
One of the most interesting and obvious chemical experiments is the experiment on the interaction of copper sulfate and calcium carbonate. The latter is contained in the shell of a simple egg, but copper sulphate should be searched in a chemical reagent store. This experience is simple, but...
Most Popular
Reversible Reaction
Reactions that do not go to completion and occur in both the forward and reverse direction.
Electroplating
Plating a metal onto a (cathodic) surface by electrolysis.
London Forces
Very weak and very short-range attractive forces between short-lived temporary (induced) dipoles, also called dispersion Forces.
Overlap
The interaction of orbitals on different atoms in the same region of space.
Mass Number
The sum of the numbers of protons and neutrons in an atom, an integer.
Band of Stability
Band containing nonradioactive nuclides in a plot of number of neutrons versus atomic number.
Specific Rate Constant
An experimentally determined (proportionality) constant, which is different for different reactions and which changes only with temperature, k in the rate-law expression: Rate = k [A] x [B]v.
Autoionization
An ionization reaction between identical molecules.
Complex Ions
Ions resulting from the formation of coordinate covalent bonds between simple ions and other ions or molecules.
Explosive
A chemical or compound that causes a sudden, almost instantaneous release or pressure, gas, heat and light when subjected to sudden shock, pressure, high temperature or applied potential.
