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Middle school chemistry experiment teaching equipment

A chemical experiment and equipment technology, applied in the field of teaching instruments, can solve the problems of physical injury and improper operation of teachers or students, and achieve the effect of intuitive teaching process, easy operation and guaranteed safety

Inactive Publication Date: 2018-09-14
韩宁康
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reaction process may cause physical injury to teachers or students due to improper operation

Method used

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  • Middle school chemistry experiment teaching equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Take the combustion of charcoal strips in oxygen as an example. Before the experiment, first place the charcoal strips on the clamping manipulator, move the manipulator to the bottom of the pulse igniter, then bend the plastic tube so that the gas outlet is aligned with the charcoal strips, and close the reactor , vacuumize, open the valve of the oxygen tank, let the oxygen enter the reactor from the tank, start the igniter, make the charcoal burn in the oxygen, emit a dazzling white light, and release a lot of heat. The above experimental phenomena were observed through a transparent glass reactor.

Embodiment 2

[0024] Take the combustion of two gases such as hydrogen in chlorine as an example. Before the experiment, first bend the plastic pipes of hydrogen and chlorine so that the two pipes are opposite and located under the pulse igniter, close the reactor, vacuumize, and open the hydrogen and chlorine. Open the valve, let hydrogen and chlorine enter the reactor from the tank, make the two streams meet, start the igniter, hydrogen burns in the chlorine, emits a pale flame, and releases a lot of heat. The above experimental phenomena were observed through a transparent glass reactor. After the reaction is over, close the valve, and after the combustion is extinguished, start the vacuum pump to discharge the gas out of the exhaust pipe.

Embodiment 3

[0026] The above-mentioned device can also realize the reaction with liquid, for example, the KI solution can be put into a solution dish, and chlorine gas is passed into the solution through a plastic tube, which shows that a brown substance is generated.

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Abstract

The invention discloses middle school chemistry experiment teaching equipment comprising multiple gas tanks. A reactor is connected on each gas tank. The gas inlet of the reactor is connected with thecorresponding gas conveying pipeline. A plastic tube is correspondingly connected in the reactor. A pulse igniter is correspondingly arranged on the upper part of the reactor. The reactor is also connected with a vacuum pump which is connected with an exhaust pipe. The other side of the reactor is provided with a clamping manipulator. The bottom part of the reactor is provided with a solution container. The bottom part of the solution container is provided with a heating device. Multiple types of reactions can be simultaneously performed, the reaction is controllable, the teaching process isvisual, and operation is easy and convenient, flexible and safe.

Description

technical field [0001] The invention belongs to the technical field of teaching instruments, and in particular relates to a teaching equipment mainly aimed at chemical experiments in middle schools. Background technique [0002] Chemistry is a science that studies the composition, properties, structure and changes of substances at the molecular and atomic levels; creates new substances. Chemistry is a natural science based on experiments. From the perspective of the formation and development of the discipline of chemistry, chemical experiments have played a very important role. Chemical experiments are not only the basis of chemical science, but also the basis of middle school chemistry teaching. Chemical experiments play an irreplaceable role in improving the quality of chemistry teaching and fully implementing the goal of cultivating scientific literacy. In middle school chemistry experiments, quite a few involve combustion, such as magnesium strips burning in air, sulfu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B23/24
CPCG09B23/24
Inventor 韩宁康
Owner 韩宁康
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