| 摘要 |
The kit for teaching chemistry of ionic compounds is designed especially for demonstrations on a magnetic board. It consists of plates with chemical symbols on their external surfaces and with magnets attached to their bottom surfaces. Characterized in that: It consists of two pairs of plates (1), (2) and (10), (15). The plates (1), (2) have humps (7) and grooves (9), while the plates (10) and (15) have smooth surfaces (12) and (13), as well as surfaces with symbols (11) and (14). The humps (7) are located at the top surface of the plate (1), while the grooves (9) - at the bottom surface of the plate (2), and they are identically positioned. The surfaces (11) and (12) of the plate (10) and the surfaces (13) and (14) of the plate (15) are at different heights.
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