Any of a subgroup of rare-earth elements, of which the cerium and terbium metals comprise the other two subgroups.
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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...
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Chemistry of the sky
Chemistry can teach us about the composition of celestial bodies and determine their age.
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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.
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Why do copper products change color, and what is the name of the process?
Probably, every person wants to know, why over time the copper turns green and becomes bloomed. This is easy to explain: that film is called patina.
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Chemical Safety
People use chemicals every day for a wide array of purposes, which can include work and house hold duties. Many of us fail to realize that we are actually handling potentially deadly chemicals when we simply clean the bathroom or wash the car. This brings to mind the reason why chemical safety is...
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Limiting Reactant
Substance that stoichiometrically limits the amount of product(s) that can be formed.
Formal Charge
A method of counting electrons in a covalently bonded molecule or ion, counts bonding electrons as though they were equally shared between the two atoms.
Isotopes
Two or more forms of atoms of the same element with different masses, atoms containing the same number of protons but different numbers of neutrons.
Complex Ions
Ions resulting from the formation of coordinate covalent bonds between simple ions and other ions or molecules.
Molecular Orbital
An orbit resulting from overlap and mixing of atomic orbitals on different atoms. An MO belongs to the molecule as a whole.
History of fireworks
There is an assumption that the history of fireworks started in China, about 2000 years ago. It is possible that the Chinese accidentally discovered explosions by burning bamboo canes.
Freezing Point Depression
The decrease in the freezing point of a solvent caused by the presence of a solute.ing Point
Hydrocarbons
Compounds that contain only carbon and hydrogen.
Polymorphous
Refers to substances that crystallize in more than one crystalline arrangement.
Solute
The dispersed (dissolved) phase of a solution.
