freezing point

简明释义

凝固点

英英释义

例句

1.Water freezes at its freezing point of 0 degrees Celsius.

水在其冰点为0摄氏度时冻结。

2.The freezing point of most liquids is lower than their boiling point.

大多数液体的冰点低于其沸点。

3.In chemistry class, we learned about the freezing point depression phenomenon.

在化学课上，我们学习了冰点降低现象。

4.Salt is often used to lower the freezing point of ice on roads.

盐通常用于降低道路上冰的冰点。

5.The freezing point of ethanol is around -114 degrees Celsius.

乙醇的冰点约为-114摄氏度。

作文

The concept of the freezing point is fundamental in understanding the behavior of substances as they transition from a liquid state to a solid state. The freezing point is defined as the temperature at which a liquid becomes a solid at a given pressure. For water, this temperature is commonly known to be 0 degrees Celsius (32 degrees Fahrenheit) under standard atmospheric conditions. This phenomenon occurs because, at the freezing point, the molecules of the liquid slow down sufficiently to form a stable structure, resulting in the formation of ice. Understanding the freezing point is crucial in various fields, including chemistry, physics, and even everyday life. For example, when we make ice cubes in our freezers, we rely on the freezing point of water to transform it into solid ice. This simple process is a practical application of the scientific principles that govern phase changes. Additionally, the freezing point is not a fixed value; it can change based on the presence of impurities or solutes in the liquid. For instance, adding salt to water lowers its freezing point, which is why salt is often used to de-ice roads during winter. In the realm of science, understanding how the freezing point varies among different substances can lead to significant discoveries. For example, the freezing point of mercury is -38.83 degrees Celsius, making it a liquid at room temperature. This unique property allows mercury to be used in thermometers, where it expands and contracts with temperature changes. Similarly, other substances have their own distinct freezing points, which can be critical for applications in industries such as cryogenics and food preservation. Moreover, the study of the freezing point extends beyond mere academic interest; it has real-world implications. In meteorology, understanding the freezing point helps predict weather patterns and the formation of phenomena like frost and snow. When temperatures drop to or below the freezing point, water vapor in the atmosphere can crystallize, leading to the beautiful yet sometimes hazardous accumulation of snow. In conclusion, the freezing point is a key concept that bridges the gap between theory and practical application. It serves as a reminder of the intricate relationships between temperature, pressure, and the states of matter. Whether we are enjoying a cold drink on a hot day, navigating icy roads in winter, or conducting experiments in a laboratory, the freezing point plays an essential role in our understanding of the physical world. By grasping this concept, we can better appreciate the science behind everyday occurrences and the importance of temperature in our lives.

“凝固点”这一概念在理解物质从液态转变为固态的过程中是非常基础的。“凝固点”被定义为在给定压力下，液体变成固体的温度。对于水来说，这一温度通常被称为0摄氏度（32华氏度），在标准大气条件下。这一现象发生是因为在“凝固点”时，液体中的分子足够减速，以形成稳定的结构，从而导致冰的形成。理解“凝固点”在化学、物理甚至日常生活中都是至关重要的。例如，当我们在冰箱中制作冰块时，我们依赖水的“凝固点”将其转变为固体冰。这个简单的过程是科学原理在相变中的实际应用。此外，“凝固点”并不是一个固定值；它可以根据液体中杂质或溶质的存在而变化。例如，向水中添加盐会降低其“凝固点”，这就是为什么在冬季常常使用盐来除冰的原因。在科学领域，理解不同物质的“凝固点”变化可以导致重大发现。例如，汞的“凝固点”为-38.83摄氏度，使其在室温下仍然是液体。这一独特性质使得汞能够用于温度计中，随着温度变化而膨胀和收缩。类似地，其他物质也有自己独特的“凝固点”，这在低温技术和食品保存等行业中可能是至关重要的。此外，对“凝固点”的研究不仅仅是学术兴趣，它还有现实世界的影响。在气象学中，理解“凝固点”有助于预测天气模式以及霜和雪等现象的形成。当温度降到或低于“凝固点”时，大气中的水蒸气会结晶，从而导致美丽但有时危险的积雪现象。总之，“凝固点”是一个关键概念，它架起了理论与实际应用之间的桥梁。它提醒我们温度、压力与物质状态之间复杂的关系。无论我们是在炎热的夏天享用冷饮，还是在冬天驾车穿越冰雪，或者是在实验室中进行实验，“凝固点”在我们理解物质世界中扮演着重要角色。通过掌握这一概念，我们可以更好地欣赏日常现象背后的科学及温度在我们生活中的重要性。