A compound consisting of two elements, may be ionic or covalent.
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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...
- 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.
- 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.
- Interesting facts about metals
Metals have been used by people since ancient times. All the time the process of obtaining them was improved, useful alloys of various metals appeared. Let’s look at interesting facts about metals.
- 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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Alkynes
Unsaturated hydrocarbons that contain one or more carbon-carbon triple bonds.
Solvation
The process by which solvent molecules surround and interact with solute ions or molecules.
xenon hexafluoride
A colorless, crystalline compound, XeF6, that melts at 50°C to a yellow liquid, and boils at 75°C.
Ideal Gas
A hypothetical gas that obeys exactly all postulates of the kinetic-molecular theory.
Periodicity
Regular periodic variations of properties of elements with atomic number (and position in the periodic table).
Amine
Derivatives of ammonia in which one or more hydrogen atoms have been replaced by organic groups.
Cohesive Forces
All the forces of attraction among particles of a liquid.
Dissociation Constant
Equilibrium constant that applies to the dissociation of a comples ion into a simple ion and coordinating species (ligands).
Sigma Orbital
Molecular orbital resulting from head-on overlap of two atomic orbitals.
Features of the Scanning Tunneling Microscope
The scanning tunneling microscope (STM) invented by Heinrich Rohrer and Gerd Binnig in the 1980s still manages to do a great job today and competes with more advanced microscope types.
The scanning tunneling microscope is used for studying the surface atoms that are found on various materials. The device is based on a complex process of "tunneling" electrons between the material and the tip of a probe.
