Chemical model

Abstract

The invention discloses a chemical model comprising at least one central sphere and at least one extended sphere. The chemical model is characterized in that the extended sphere is composed of a large hemisphere and a small hemisphere; the circular surface of the large hemisphere and the circular surface of the small hemisphere are both equipped with magnetic material layers; the central sphere is connected with the large hemisphere through an elastic connecting rod; each central sphere is provided with at most eight large hemispheres; and the chemical model is just provided with one kind of the central sphere or the chemical model is provided with two or more kinds of the central spheres, wherein at least one large hemisphere on each central sphere and the large hemisphere on another central sphere are attracted so as to form a shared dual-hemisphere structure. By means of the structural innovation of the central sphere, the extended sphere, and the elastic connecting rod, the chemical model may reflect the saturation degree of the outermost electrons of an atomic nucleus, demonstrate a forming process of a covalent bond, and form a share electron pair model and multiple molecular models.

Description

technical field [0001] The invention relates to the technical field of teaching models, in particular to a chemical model of atoms or molecules. Background technique [0002] In the chemistry classroom, the teaching of atoms or molecules often requires the assistance of models in order to intuitively explain the structure and characteristics of atoms or molecules. The number of electrons outside the nucleus of an atom, especially the number of electrons in the outermost shell of an atom, is an important basis for the chemical properties of the element. However, many atomic or molecular models do not reflect the number of electrons in the outermost shell of the atom, and there are problems such as inability to intuitively understand the chemical properties of elements and how to form covalent bonds between atoms. However, the general chemical model structures in the prior art do not effectively solve the above problems. For example, the Chinese patent authorization announce...

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Problems solved by technology

[0003] The invention solves the technical problems that the general teaching model in the prior art does not effectively solve the technical problems that the formation process of the covalent bond cannot be intuitively understood, the number of molecular models is small, and the relationship between the atomic nucleus and the number of electrons in the outermost layer cannot be reflected, and a chemical model is provided. Structural innovations of spheres, extended spheres, large hemispheres, small hemispheres, magnetic materials and elastic connecting rods, realizing that the chemical model has the ability to reflect the saturation degree of the outermost electrons of the nucleus, and can demonstrate the formation of one or more covalent bonds Process, can form a shared electron pair model, can form a variety of molecular models, intuitive and easy to understand

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