Is the absorption endothermic?

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288 values ​​of all reacting substances are determined by the law of mass action MWG. If the dynamic equilibrium is disturbed, equilibrium shifts and a new equilibrium is established according to the principle of Le Châtelier. Educt Educts are the starting materials for a chemical reaction. You must have a minimum of driving force. Electric force The electric force belongs - besides gravity and the nuclear forces - to the fundamental forces of nature. Electric forces dominate what happens in chemistry and are caused by charges. (Charges are given in coulombs, that is, ampere seconds.) Electron Electrons are fuzzy, negatively charged elementary particles that can be superimposed. They form the shell-like shell of atoms and can only take up (absorption) and release (emission) very specific energy quanta there. They cannot exist on their own, but can be transferred between particles of material and move easily, for example in metal grids or in a vacuum. Electronegativity The electronegativity EN is a dimensionless number that describes the electron-attracting effect of an atom when a chemical bond is formed. The bond types can be estimated from the EN values ​​and the size of partial loads can be calculated. Electron pair bond The electron pair bond works between non-metal atoms and usually leads to the formation of small particles, the molecules. (The electron pair bond is also known as an atomic bond or covalent bond and can be explained by the overlapping of orbitals.) Element An element is a pure substance that cannot be broken down under normal laboratory conditions. Since its material particles consist of a single type of atom, they cannot be used to produce two new, non-mutable pure substances. (Some elements exist in different modifications, for example ordinary oxygen O 2 and ozone O 3. This fact is called allotropy.) Elementary particles When explaining chemical laws, the electron (carrier of the negative elementary charge of –1.6. 10 –19 C) and the proton (carrier of the positive elementary charge of +1.6. 10 –19 C) play an important role. Physics has discovered and researched many more elementary particles. Elimination reaction In an elimination reaction, two atoms or groups of atoms split off from two adjacent carbon atoms and combine to form a molecule. The elimination reaction creates a double bond. The elimination reaction is the reverse of the addition reaction. endothermic If the products are more energetic than the starting materials, the reaction is endothermic. Due to the conservation of energy, energy is absorbed, so that the environment usually cools down. The reaction energy can also be absorbed in the form of electrical work or light. Endothermic reactions only have a driving force if they significantly increase the entropy. Energy The ability to do work is called energy. The unit used is the joule (J). Overall, the energy - like the mass - is retained. (However, under extreme conditions, mass can also be converted into energy or energy into mass. Mass defects occur, for example, when atomic nuclei fuse or split.) Entropy The entropy S is a quantity that describes the extent of the disorder. Substance systems naturally strive to maximize their entropy. (Entropy values ​​can be determined with the help of the probability calculation.) Exothermic If the products are lower in energy than the starting materials, the reaction is exothermic. Due to the conservation of energy, energy is released, so that the environment usually heats up. The reaction energy can also be emitted in the form of electrical work or light. Precipitation reaction In precipitation reactions, stable ion lattices are formed very quickly from separately dissolved ions. The precipitation reaction is the reverse reaction to the dissolution reaction of a salt in water. The driving force of a precipitation reaction is expressed by the solubility product K L. Falsification principle The falsification principle means that no scientific idea or statement can be definitively proven. Future experiments and observations may be able to refute established theories, ie. to falsify. One can therefore only know with certainty what is wrong. Formula This is an abbreviation using atomic symbols for a substance particle or the substance that consists of these substance particles. Geometric formulas correctly reflect the bond angles. Skeletal formulas For testing purposes only - property of the publisher öbv

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