Scenarios
Formation of chemical elements and substances
Address: St. Petersburg, emb. R. Moiki, 48 Organizing Committee e-mail: [email protected] Organizers: Russian State Pedagogical University named after. A.I. Herzen Conditions of participation and housing: 400 rubles. Dear Colleagues! We invite you to take part in the II All-Russian Student Conference
Protolytic theory of acids and bases
1. Protolysis (ionization) reactions. These include reactions of interaction of an acid or base with water: K-ta 1 base 2 base 2 base. 1K-ta 1 base 2 base 2 base. 12. Autoprotolysis reactions associated with the transfer of a proton from one water molecule to another. Hydraulic reactions
VC. Voronov Nuclear magnetic resonance. Nuclear magnetic resonance. Applications of NMR Discovery of NMR
NUCLEAR MAGNETIC RESONANCE (NMR), the phenomenon of resonant absorption of radio frequency electromagnetic waves. energy in-vom with non-zero mag. moments of the nuclei located in the external permanent magician. field. Non-zero nuclear magnet. nuclei 1 H, 2 H, 13 C, 14 have moment
Catalysts that accelerate the decomposition of hydrogen peroxide
O.S.ZAYTSEV TEACHING BOOK ON CHEMISTRY FOR SECONDARY SCHOOL TEACHERS, STUDENTS OF PEDAGOGICAL UNIVERSITIES AND SCHOOLCHILDREN OF 9–10 GRADES WHO DECIDED TO DEVOTE THEMSELVES TO CHEMISTRY AND NATURAL SCIENCE TEXTBOOK TASKS LABORATORY PRACTICAL SCIENTIFIC STORY S FOR READING Continued. Cm.
HPLC systems for gel permeation chromatography Basic HPLC system for GPC
Description Together with the German company Polymer Standards Service (PSS) - one of the leading manufacturers of materials and equipment for gel permeation chromatography (GPC) or, in other words, size exclusion chromatography (SEC) - we offer a complex
Chemical names and formulas of substances Chemical compound
Classification of substances All substances can be divided into simple ones, consisting of atoms of one element, and complex ones, consisting of atoms of different elements. Simple substances are divided into metals and non-metals: Metals – s and d elements. Nonmetals are p elements. Slo
Salts in chemistry: types and properties
In order to answer the question of what salt is, you usually don’t have to think long. This chemical compound is found quite often in everyday life. There is no need to talk about ordinary table salt. Detailed internal structure of sol
Restorative properties
The human body contains about 5 g of iron, most of it (70%) is part of blood hemoglobin. Physical properties In the free state, iron is a silvery-white metal with a grayish tint. Pure iron is ductile and has ferromagnetic properties.
Reaction energy profile graph
The enthalpy change DH is essentially the difference in the bond energies of the reactants and products, including the energies of conjugation, tension, and solvation. DH can be calculated by summing the energies of all bonds broken during the reaction and subtracting from them the sum of the energies of all
Inert gases and hematopoiesis
British International School Abstract on chemistry “Inert gases and their properties” 9th grade student Aleksey Sokolenko Leader: Chernysheva I.V. IIntroduction………………………………………………………………………………2 1.1 Inert gases – elements of group VIIIА…………………………………………………… ……...2 1.2 Ar
