CN200993837Y - Chemistry experiment demonstrating device - Google Patents
Chemistry experiment demonstrating device Download PDFInfo
- Publication number
- CN200993837Y CN200993837Y CN 200620168491 CN200620168491U CN200993837Y CN 200993837 Y CN200993837 Y CN 200993837Y CN 200620168491 CN200620168491 CN 200620168491 CN 200620168491 U CN200620168491 U CN 200620168491U CN 200993837 Y CN200993837 Y CN 200993837Y
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- China
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- conical flask
- flask
- rubber stopper
- hole
- separating funnel
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Abstract
A chemical experiment demonstrator is composed of a reaction generating part and a character observing part, of which the reaction generating part comprises a tap funnel and a conical flask, and the character observing part comprises a filter flask and an air vessel, and is characterized in that: the conical flask jack is provided with a diplopore rubber stopper, and the discharging tube at the lower part of the tap funnel is provided with a valve, and is inserted in a conical flask through a hole on the diplopore rubber stopper; the filter flask is communicated with the air vessel, and the other end of the air vessel is also inserted in the conical flask through anther hole on the diplopore rubber stopper at the conical flask jack; the conical flask is filled with manganese dioxide, and the filter flask is filled with sodium hydroxide solution, as well as the tap funnel is filled with hydrogen peroxide solution. The utility model can effectively control the reaction, and properly treat the waste liquid and gas produced by the experiment, and has the advantages of safety and environmental protection, as well as simple structure and obvious demonstrating effect, and saving experimental medicines and increasing the participating chance for the students.
Description
Technical field
The utility model relates to a kind of demonstration device, particularly relates to a kind of oxygen of producing, and carries out the chemical experiment apparatus for demonstrating of oxygen property research, belongs to the middle school teaching apparatus.
Background technology
At present, the used teaching aid in middle school is a lot, but function singlenesses all just designs at the content that needs separately to show.For example, produce oxygen in the junior middle school chemistry, carry out the experiment of oxygen character, existing teaching aid preliminary work before the class is more, testing remaining medicine will waste, student's participation opportunity seldom is unfavorable for the enthusiasm and the initiative of mobilizing students study, more is helpless to cultivate students ' analysis problem and problem-solving ability.
The utility model content
The purpose of this utility model is to overcome the prior art above shortcomings, provide a kind of oxygen of producing, carry out the chemical experiment apparatus for demonstrating of oxygen property research, utilize this apparatus for demonstrating, can effectively control reaction takes place, safely handle the waste liquid waste gas that experiment produces well, have safety and environmental protection, simple to operate, demonstration effect obviously, save the experimental drug product and increased student's characteristics such as participation opportunity.
The technical solution that the utility model provides is: this chemical experiment apparatus for demonstrating, including reaction part takes place and observes the character part, wherein reaction takes place partly to be made up of uncovered separating funnel and conical flask, observing the character part is made up of uncovered suction flask and wireway, the bottleneck that is characterized in described conical flask is provided with a rubber stopper with double hole, separating funnel bottom discharging tube is provided with valve, separating funnel bottom discharging tube is by a hole on the rubber stopper with double hole, in the insertion conical flask, described suction flask communicates with wireway, the wireway other end is by another hole of the rubber stopper with double hole of conical flask bottle mouth position, also insert in the conical flask, be provided with manganese dioxide in the described conical flask, fill sodium hydroxide solution in the described suction flask, fill superoxol in the described separating funnel.
Compared with prior art, the beneficial effects of the utility model are: can effectively control reaction and take place, safely handle the waste liquid waste gas that experiment produces well, have safety and environmental protection, simple to operate, demonstration effect obviously, save the experimental drug product and increased student's characteristics such as participation opportunity.
Description of drawings
Accompanying drawing is the structural representation that the utility model provides embodiment.
Embodiment
Below in conjunction with embodiment concrete technical scheme of the present utility model is described further:
As shown in the figure, this chemical experiment apparatus for demonstrating, including reaction part takes place and observes the character part, wherein reaction takes place partly to be made up of uncovered separating funnel 1 and conical flask 2, observing the character part is made up of uncovered suction flask 3 and wireway 7, the bottleneck of conical flask 2 is provided with a rubber stopper with double hole 4, separating funnel 1 bottom discharging tube is provided with valve 5, separating funnel 1 bottom discharging tube is by a hole on the rubber stopper with double hole 4, insert in the conical flask 2, described suction flask 3 communicates with wireway 7, wireway 7 other ends also insert in the conical flask 2 by another hole of the rubber stopper with double hole 4 of conical flask 2 bottle mouth positions, are provided with manganese dioxide 6 in the described conical flask 2, fill sodium hydroxide solution in the described suction flask 3, fill superoxol in the described separating funnel 1.
The catalytic action of demonstration manganese dioxide in hydrogen peroxide dissociation reaction:
Batten with band Mars stretches in the separating funnel 1, the batten of band Mars does not have resume combustion, illustrates that amount of oxygen is few, and the valve 5 on the separating funnel 1 bottom discharging tube is opened, superoxol flows down, under the manganese dioxide effect, there are a large amount of bubbles to produce, with the batten check of band Mars, the batten resume combustion of band Mars, proof is under the manganese dioxide effect, and hydrogen peroxide dissociation reaction speed is accelerated, and promptly manganese dioxide is the catalyzer of hydrogen peroxide dissociation reaction.
Demonstration substance combustion condition:
The charcoal that to not light directly stretches in the suction flask 3, charcoal is burning not, illustrate and have only oxygen to exist, combustible can not burn, and charcoal is placed in the beaker of water, and beaker is heated, charcoal is not burning also, illustrate and have only uniform temperature, combustible can not burn yet, and three conditions of substance combustion (but being combustible, oxygen or air burning-point) are indispensable.
Demonstration carbon, sulphur, phosphorus, iron wire burn in oxygen:
Stretch in the suction flask 3 with glass bar sticky point carbon, sulphur, phosphorus, iron wire, make it burning, checking oxygen has combustion-supporting property, and utilizes and fill the harmful gas that generates in the sodium hydroxide solution absorption reaction in the suction flask 3, thereby finishes demo content.
Claims (1)
1. chemical experiment apparatus for demonstrating, including reaction part takes place and observes the character part, wherein reaction takes place partly to be made up of uncovered separating funnel and conical flask, observing the character part is made up of uncovered suction flask and wireway, the bottleneck that it is characterized in that described conical flask is provided with a rubber stopper with double hole, separating funnel bottom discharging tube is provided with valve, separating funnel bottom discharging tube is by a hole on the rubber stopper with double hole, in the insertion conical flask, described suction flask communicates with wireway, the wireway other end is by another hole of the rubber stopper with double hole of conical flask bottle mouth position, also insert in the conical flask, be provided with manganese dioxide in the described conical flask, fill sodium hydroxide solution in the described suction flask, fill superoxol in the described separating funnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620168491 CN200993837Y (en) | 2006-12-22 | 2006-12-22 | Chemistry experiment demonstrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620168491 CN200993837Y (en) | 2006-12-22 | 2006-12-22 | Chemistry experiment demonstrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200993837Y true CN200993837Y (en) | 2007-12-19 |
Family
ID=38946911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620168491 Expired - Fee Related CN200993837Y (en) | 2006-12-22 | 2006-12-22 | Chemistry experiment demonstrating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200993837Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106710403A (en) * | 2015-08-09 | 2017-05-24 | 林师龙 | Experimental device for combustion of thin iron wire in oxygen |
-
2006
- 2006-12-22 CN CN 200620168491 patent/CN200993837Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106710403A (en) * | 2015-08-09 | 2017-05-24 | 林师龙 | Experimental device for combustion of thin iron wire in oxygen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |