Interesting demonstration tool for integrated teaching of physics and chemistry

Abstract

The invention discloses an interesting demonstration tool for integrated teaching of physics and chemistry. The tool comprises a base, wherein a vertical frame is fixedly installed at the top of the base, a measuring glass is arranged at the right side of the vertical frame, a first fixed ring is fixedly connected to the outer portion of the measuring glass in a sleeving mode, the first fixed ringis fixedly connected to the vertical frame through a first support, a conical flask is arranged in the measuring glass, the top of the conical flask extends to the outer portion of the measuring glass, a second fixed ring is fixedly connected to the outer diameter of an opening of the conical flask in a sleeving mode, and the second fixed ring is fixedly connected to the vertical frame through asecond support. Through the interesting demonstration tool for integrated teaching of the physics and the chemistry, the phenomenon of expansion by heat and contraction by cold of air can be demonstrated vividly; through the interesting demonstrative teaching, the interest in learning and thirst for knowledge of students can be motivated, and therefore the teaching quality and effect of the physics and the chemistry are improved; and moreover, the height of an alcohol lamp is convenient to adjust by people, and therefore convenience is brought to use by people.

Description

technical field [0001] The invention relates to the field of teaching aids, in particular to an interesting demonstration tool for comprehensive teaching of physics and chemistry. Background technique [0002] As we all know, thermal expansion and contraction is a common physical and chemical reaction. The thermal expansion and contraction of an object is related to the movement of the particles: when the object absorbs heat and heats up, the particles move faster, and the distance between the particles increases, and the object expands; when the object is cooled, the movement speed of the particles slows down, and the particles As the distance between them shrinks, the object shrinks. Water expands when heated and shrinks when cooled. This property is called thermal expansion and contraction. Does air also have the property of thermal expansion and contraction? Air is flowing and invisible, so how can we do experiments to clearly observe the volume change of air after it...

AI Technical Summary

Problems solved by technology

However, at present, there is a lack of a teaching demonstration device in teaching, which is specially used for the teaching demonstration of air thermal expansion and cold contraction, so as to improve students' interest in learning.

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