Physical training
How to write a report on self-education: to help young teachers
Preschool children are by nature inquisitive explorers of the world around them. Search activity, expressed in the need to explore the world around us, is genetically determined and is one of the main and natural manifestations of the child’s psyche. Basically
Reversible redox system Reversible redox systems
A distinctive feature of redox reactions is the transfer of electrons between reacting particles - ions, atoms, molecules and complexes, as a result of which the oxidation state of these particles changes, for example Fe2+? e? = Fe3+. Pos
Primary alcohols examples
Structure Alcohols (or alkanols) are organic substances whose molecules contain one or more hydroxyl groups (-OH groups) connected to a hydrocarbon radical. According to the number of hydroxyl groups (atomicity), alcohols are divided into: Monoatomic
Electrolysis of hydrochloric acid equation
Electrolysis of solutions and molten salts (2 hours) Lessons of the elective course “Electrochemistry” Objectives of the first lesson: First lesson plan 1. Repetition of the studied methods of producing metals. 2. Explanation of new material. 3. Problem solving and
Reactivity of complexes
Reactions of substitution, addition or elimination of ligands, as a result of which the coordination sphere of the metal changes. In a broad sense, substitution reactions mean the processes of replacing some ligands in the coordination sphere of a metal with others. Dissociation
Graph theory in chemistry. Graph theory. Basic definitions and theorems of graph theory
E. Babaev. Candidate of Chemical Sciences. Speaking about the mathematization of science, most often they mean only the purely pragmatic use of computational methods, forgetting the apt statement of A. A. Lyubishchev about mathematics as not so much with
Substituents on the benzene ring are divided into two groups. Reactions of the benzene ring.
pyrocatechin resorcinol hydroquinone phloroglucinol pyrogallol For the systematic naming of phenols, the IUPAC substitutive nomenclature is used, according to which phenols are
They are fooling us. Welder mask. Chemistry of color. Substances are chameleons Classification of automatic welding filters
They brought me an etaltech et8f automatic welder's mask with a complaint - it was unstable. Unfortunately, I didn’t take a photo of it, it’s like this, only the sticker is different: Let’s look at the instructions: It says in black and white that it runs on solar panels. Sun
Analytical chemistry Analytical chemistry titration
Titrimetric, or volumetric, analysis is a method of quantitative analysis based on measuring the volume (or mass) of reagent T spent on the reaction with the analyte X. In other words, titrimetric analysis is an analysis based on titration.
What substances catalyze reactions?
The rates of chemical reactions can increase sharply in the presence of various substances that are not reagents and are not part of the reaction products. This remarkable phenomenon is called catalysis (from the Greek “katalysis” - destruction). Substance, n
