The liquid and solid phases, phases in which particles interact strongly.
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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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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.
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Diamond is a crystalline modification of pure carbon formed in the deep interior of the Earth, in the upper mantle at depths of more than 80-100 kilometers, at exceptionally high pressure and temperature. It is the most precious stone, the hardest and most wear-resistant mineral, the most...
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Osmosis
The process by which solvent molecules pass through a semipermable membrane from a dilute solution into a more concentrated solution.
Contact Process
Industrial process by which sulfur trioxide and sulfuric acid are produced from sulfur dioxide.
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.
Heteronuclear
Consisting of different elements.
Allotropic Modifications (Allotropes)
Different forms of the same element in the same physical state.
Ferromagnetism
The ability of a substance to become permanently magnetized by exposure to an external magnetic field.
Fat
Solid triester of glycerol and (mostly) saturated fatty acids.
Ternary Compound
A compound consisting of three elements, may be ionic or covalent.
Nucleus
The very small, very dense, positively charged center of an atom containing protons and neutrons, as well as other subatomic particles.
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| General Chemistry Online - Rich resource for students and teachers of introductory chemistry. Includes interactive course guides and tutorials, an exam survival guide, reference tables, self-grading quizzes and exams, a searchable glossary, a question and answer board, answers to over 300 frequently asked questions, and a chemical trivia quiz. |
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| Chemistry & Environmental Dictionary - Contains definitions for many chemistry, environmental and other related technical terms and acronyms. |
| EDF Chemical Scoreboard - Toxic Release Inventory data for the US. Sources and amounts of toxic chemicals released to air and water. Also has information on health effects and other topics. |
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