hemija

hemija

The study of matter and its transformations. See What is chemistry? for other definitions.

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Secteur d’activité/Domaine : Chimie
Catégorie : Chimie générale
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organska hemija

Chimie; Chimie générale

The study of compounds that contain carbon chemically bound to hydrogen, including synthesis, identification, modelling, and reactions of those compounds.

fizička hemija

Chimie; Chimie physique

The branch of chemistry that is concerned with the application of physics to chemical systems. It involves the study of the principles of thermodynamics, quantum mechanics, ...

medicinska hemija

Chimie; Chimie générale

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

neorganska hemija

Chimie; Chimie générale

The study of inorganic compounds , specifically their structure, reactions, catalysis, and mechanism of action.

nuklearna fuzija

Chimie; Chimie générale

Combination of two smaller nuclei to form a larger nucleus. The larger nucleus has higher binding energy per nucleon than the original nuclei, and fusion results in the release of ...

amonijak

Chimie; Chimie générale

Pure NH3 is a colorless gas with a sharp, characteristic odor. It is easily liquified by pressure, and is very soluble in water. Ammonia acts as a weak base . Aqueous solutions of ...

nuklearna fizija

Chimie; Chimie générale

Splitting of a nucleus into two smaller nuclei and neutrons. The smaller nuclei have higher binding energy than the original nucleus, and fission results in the release of energy.

enzim

Chimie; Chimie générale

Protein or protein-based molecules that speed up chemical reactions occurring in living things. Enzymes act as catalysts for a single reaction, converting a specific set of ...

amino kiselina

Chimie; Chimie générale

Amino acids are molecules that contain at least one amine group (-NH2) and at least one carboxylic acid group (-COOH). When these groups are both attached to the same carbon, the ...

celuloza

Chimie; Chimie générale

A polysaccharide made of linked glucose molecules that strengthens the cell walls of most plants. See also: What is cellulose?

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Secteur d’activité/Domaine : Animaux Catégorie : Snakes

kobra

A highly venomous snake from the elapidae family native to Asia and Africa. When alarmed, a cobra raises its head and expands the skin of the neck to ...