分子运动

Molecular Movement

展示内容：

Exhibit Explanation:

固态分子只能在确定的平衡位置附近振动。由于分子间的作用力很强，固体不但可以抵抗体积的改变，还可以抵抗形状的改变。

Solid-state molecules can only vibrate near the identified position of equilibrium. Due to the strong acting force among molecules, solid objects can not only resist volume change, but also stand up to shape change.

液态分子可在一定的距离内自由移动，分子间的作用力较大。液态物质具有一定的体积，但无固定的形状。

Liquid-state molecules can freely move within a certain distance, and the acting force among molecules is huge. Liquid has certain volume but without fixed shape.

气态分子运动很剧烈，彼此之间相距较远。气体既无一定的形状，又无一定的体积。

The movement of gas-stage molecules is drastic and they are distant from each other. Gas doesn’t have certain shape, nor does it have certain volume.

操作方法：

Operating Instruction:

按下按钮，启动风机，然后推动滑杆，模拟温度变化，看看不同状态下的分子运动。

Press the button to start the fan; then push the slider and simulate temperature changes, observe molecular movement under different states.

1.当滑杆位于“熔点”刻度之下时，演示固态时的分子运动；

2.推动滑杆到“熔点”与“沸点”之间，演示液态时的分子运动；

3.推动滑杆到“沸点”之上，演示气态时的分子运动。

1. Push the slider under the mark of “Melting Point”, and demonstrates solid-state molecular movement;

2. Push the slider between “Melting Point” and “Boiling Point”, and demonstrates liquid-state molecular movement;

3. Push the slider above “Boiling Point”, and demonstrates gas-state molecular movement.