A term used to describe molecules and polyatomic ions that have one atom in the center and six atoms at the corners of a octahedron.
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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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Chemistry of the sky
Chemistry can teach us about the composition of celestial bodies and determine their age.
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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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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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Varieties of garnet minerals
The most famous type of garnet stone is pyrope (flaming). This is the "oldest of garnets", with a dense red color, similar to the grain of an edible garnet. Pyrope has a variety called rhodolite - a stone of dense pink or pink-purple color, which sometimes has the alexandrite effect and is used in...
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Acid
A substance that produces H+(aq) ions in aqueous solution. Strong acids ionize completely or almost completely in dilute aqueous solution. Weak acids ionize only slightly. Chemicals or substances having the property of an acid are said to be acidic.
Frequency
The number of repeating corresponding points on a wave that pass a given observation point per unit time.
Amino Acid
Compound containing both an amino and a carboxylic acid group.The --NH2 group.
Standard Molar Volume
The volume occupied by one mole of an ideal gas under standard conditions, 22.4liters.
Hydrocarbons
Compounds that contain only carbon and hydrogen.
Heat of Crystallization
The amount of heat that must be removed from one gram of a liquid at its freezing point to freeze it with no change in temperature.
Anode
In a cathode ray tube, the positive electrode. Electrode at which oxidation occurs.
Capillary
A tube having a very small inside diameter.
Dispersing Medium
The solvent-like phase in a colloid.
Percent Purity
The percent of a specified compound or element in an impure sample.
