CN204990958U

CN204990958U - Multi -functional carbon dioxide nature demonstration ware

Info

Publication number: CN204990958U
Application number: CN201520765878.4U
Authority: CN
Inventors: 贾有福
Original assignee: JINGTAI FOURTH MIDDLE SCHOOL
Current assignee: JINGTAI FOURTH MIDDLE SCHOOL
Priority date: 2015-09-30
Filing date: 2015-09-30
Publication date: 2016-01-20
Anticipated expiration: 2025-09-30

Abstract

The utility model relates to a multi -functional carbon dioxide nature demonstration ware, its characterized in that: three hole rubber stopper (5) are filled in to gas bottle (1) bottleneck, and one of them macropore inserts utensil test tube (2), and the lateral duct of utensil test tube (2) is crossed rubber tube (6) and is connected glass return bend (4), and three hole rubber stopper (5) one of them aperture is inserted in glass return bend (4). Easy and simple to handle, the phenomenon is obvious, save time, economize the equipment, practice thrift the medicine, easily arouse interest in learning, be favorable to cultivateing student's thinking ability.

Description

Multifunctional carbon dioxide properties demonstration device

Technical field

The utility model belongs to chemistry subject teaching aid, is specifically related to a kind of Multifunctional carbon dioxide properties demonstration device.

Background technology

In Section of three properties of carbon dioxide teaching of compulsory education textbook science and education version ninth grade chemistry chapter 5, teaching material design Experimental Research, complete character with three little experiments to probe into, experimentation more complicated, the instructional blocks of time of at substantial, also waste a large amount of experimental drugs simultaneously, need improve.

Summary of the invention

The object of utility model is the defect in order to overcome prior art, provides a kind of Multifunctional carbon dioxide properties demonstration device, thus efficiently solves problems of the prior art.

Above-mentioned for realizing, the technical scheme that the utility model is taked is: a kind of Multifunctional carbon dioxide properties demonstration device, it is characterized in that: gas bottle (1) bottleneck fills in three hole rubber stoppers (5), one of them macropore inserts tool and props up test tube (2), the arm that tool props up test tube (2) connects glass bend pipe (4) by proofed sleeve (6), and glass bend pipe (4) inserts three hole rubber stopper (5) one of them aperture.

The outer wall upper, middle and lower position that tool props up test tube (2) posts litmus paper (7) respectively, and wherein two panels litmus paper (7) is moistening by water up and down.

The mouth of pipe of glass bend pipe (4) is mutually concordant with middle litmus paper.

The beneficial effects of the utility model are: easy and simple to handle, and phenomenon is obvious; Save time, economize equipment, save medicine; Be easy to arouse the interest in study, be conducive to the thinking ability of training student.

Accompanying drawing explanation

Fig. 1 is the utility model front view;

Fig. 2 is the utility model vertical view;

In figure: 1-gas bottle, 2-tool props up test tube, 3-syringe, 4-glass bend pipe, 5-tri-hole rubber stopper, 6-proofed sleeve, 7-litmus paper.

Embodiment

Be described principle of the present utility model and feature below in conjunction with accompanying drawing, example, only for explaining the utility model, is not intended to limit scope of the present utility model.

Embodiment 1, see Fig. 1-2, a kind of Multifunctional carbon dioxide properties demonstration device, it is characterized in that: gas bottle 1 bottleneck fills in three hole rubber stoppers 5, one of them macropore inserts tool and props up test tube 2, the arm that tool props up test tube 2 connects glass bend pipe 4 by proofed sleeve 6, and glass bend pipe 4 inserts three one of them aperture of hole rubber stopper 5.

The outer wall upper, middle and lower position that tool props up test tube 2 posts litmus paper 7 respectively, and wherein two panels litmus paper 7 is moistening by water up and down.

The mouth of pipe of glass bend pipe 4 is mutually concordant with middle litmus paper.

Experimentation:

(1) first prop up test tube outer wall upper, middle and lower sticking double faced adhesive tape litmus blue test paper at tool, and contrast with the moistening upper and lower two panels test paper of distilled water and centre.

(2) prop up in test tube at tool and load block marble, then prop up test tube by rubber stopper to tool with syringe and constantly inject watery hydrochloric acid (can reach by controlling add the speed of watery hydrochloric acid the speed controlling reaction velocity);

(3) to be changed by color and sequencing analysis draws: the density ratio air of carbon dioxide greatly; Can react with water.

(4) match lighted is placed on another aperture tests, observe burning fire bavin and extinguish, illustrates that carbon dioxide does not generally burn and also do not support to burn.

(5) in gas bottle, inject clarification lime water with another syringe by rubber stopper again, observe after slight oscillatory and become cloudiness, analyze and show that carbon dioxide can react with clarification lime water.

Claims

1. a Multifunctional carbon dioxide properties demonstration device, it is characterized in that: gas bottle (1) bottleneck fills in three hole rubber stoppers (5), one of them macropore inserts tool and props up test tube (2), the arm that tool props up test tube (2) connects glass bend pipe (4) by proofed sleeve (6), and glass bend pipe (4) inserts three hole rubber stopper (5) one of them aperture.

2. Multifunctional carbon dioxide properties demonstration device as claimed in claim 1, is characterized in that: the outer wall upper, middle and lower position that tool props up test tube (2) posts litmus paper (7) respectively, and wherein two panels litmus paper (7) is moistening by water up and down.

3. Multifunctional carbon dioxide properties demonstration device as claimed in claim 1, is characterized in that: the mouth of pipe of glass bend pipe (4) is mutually concordant with middle litmus paper.