fizička promena

fizička promena

A change which does not transform one substance into another. For example, freezing water is a physical change because both water and ice are H2O. However, electrolysis of water would not be a physical change because passing a strong electric current through water can decompose it into H2 and O2.

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Ipar/Tárgykör: Chemistry
Kategória: General chemistry
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promena

Oktatás; SAT vocabulary

Izmena, naročito potpuna promena, stanja ili okolnosti, zavisnih od sreće.

fazna promena

Chemistry; General chemistry

A change in the state of a sample of matter; for example, solid to liquid or liquid to gas. Phase changes are considered physical rather than chemical changes.

fazna promena

Physics; General physics

The action of a substance changing from one state of matter to another; a phase change always absorbs or releases internal potential energy that is not associated with a ...

društvena promena

Sociology; General sociology

Significant alteration over time in behavior patterns and culture, including norms and values.

isparljiv

Chemistry; General chemistry

A solid or liquid material that easily vaporizes. A material with a significant vapor pressure .

abraziv

Chemistry; General chemistry

A very hard, brittle, heat-resistant substance that is used to grind the edges or rough surfaces of an object. boron carbide, diamond, and corundum are abrasives.

diastereoizomer, diastereomer

Chemistry; General chemistry

Stereoisomers which are not mirror images of each other. Diastereomers are chemically similar but distinguishable; they have different melting points and boiling points and they ...

medicinska hemija

Chemistry; General chemistry

A branch of chemistry concerned with the discovery, design, synthesis , and investigation of biologically active compounds and reactions that these compounds undergo in living ...

slab elektrolit

Chemistry; General chemistry

A weak electrolyte is a solute that incompletely dissociates into ions in solution. For example, acetic acid partially dissociates into acetate ions and hydrogen ions, so that ...

grafit

Chemistry; General chemistry

An amorphous form of carbon , made of carbon atoms bound hexagonally in sheets (like chickenwire).

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Ipar/Tárgykör: People Kategória: Pageantry

Tereza Skanlan

The winner of the 2011 Miss America pageant. Scanlan, A 17-year-old and recent high school graduate from the western Nebraska town of Gering captured ...