litmus paper

简明释义

石蕊纸

英英释义

例句

1.When testing the water quality, we used litmus paper to determine its pH.

在测试水质时，我们使用试纸来确定其pH值。

2.The teacher explained that litmus paper is a simple tool for measuring pH levels.

老师解释说，试纸是测量pH值的简单工具。

3.In chemistry class, we used litmus paper to test the acidity of various solutions.

在化学课上，我们使用试纸测试各种溶液的酸性。

4.The litmus paper turned blue when it came into contact with the alkaline solution.

当试纸接触到碱性溶液时，变成了蓝色。

5.You can buy litmus paper at any science supply store for your experiments.

你可以在任何科学供应商店购买试纸用于实验。

作文

In the world of science, particularly in chemistry, there are many tools and indicators that help us understand the properties of substances. One such tool is litmus paper, a simple yet effective indicator used to determine the acidity or alkalinity of a solution. The significance of litmus paper goes beyond its practical applications; it serves as a metaphor for testing the truth or quality of various situations in life. This essay will explore the importance of litmus paper, both in scientific contexts and as a broader symbol in our daily lives.First and foremost, let’s delve into the scientific aspect of litmus paper. It is made from lichens, which are natural organisms that thrive in various environments. When these lichens are treated with specific chemicals, they produce a dye that changes color when exposed to acidic or basic solutions. Specifically, litmus paper turns red in acidic conditions (pH less than 7) and blue in alkaline conditions (pH greater than 7). This property makes litmus paper an invaluable tool in laboratories and educational settings, where students learn about chemical reactions and pH levels. By using litmus paper, students can visually observe the effects of acids and bases, making abstract concepts more tangible and understandable.Beyond its scientific utility, litmus paper has found its way into everyday language as a metaphor for judgment. People often use the term ‘litmus test’ to describe a situation where a single factor is used to make a decision or assessment. For example, in politics, a candidate’s stance on a particular issue may serve as a litmus test for voters. If a candidate supports policies that align with a voter's beliefs, they are likely to gain support; if not, they may be rejected. This idea illustrates how a simple indicator, like litmus paper, can influence complex human interactions and decisions.Moreover, the concept of a litmus test can be applied to personal relationships and moral dilemmas. In friendships, for instance, loyalty might serve as a litmus test for determining who can be trusted. When faced with challenges, the way friends respond can reveal their true character. Similarly, in ethical discussions, certain principles may act as a litmus test for determining right from wrong. These tests can guide individuals in navigating their values and beliefs.In conclusion, litmus paper is not just a scientific tool; it embodies a broader principle of assessment in various aspects of life. Its ability to indicate acidity and alkalinity makes it a staple in laboratories, while its metaphorical use as a litmus test helps us understand and evaluate the complexities of human behavior and decision-making. Whether we are conducting experiments in a lab or making choices in our personal lives, the essence of litmus paper reminds us of the importance of clear indicators and honest evaluations. As we continue to navigate through life, let us remember the lessons learned from this simple piece of paper, applying its principles to foster better understanding and communication in all our endeavors.

在科学界，特别是化学中，有许多工具和指示剂帮助我们理解物质的特性。其中一个工具是石蕊纸，这是一种简单而有效的指示剂，用于确定溶液的酸碱性。石蕊纸的重要性超越了其实际应用；它作为检验各种生活情境真相或质量的隐喻。这篇文章将探讨石蕊纸的重要性，包括科学背景和作为我们日常生活中更广泛象征的意义。首先，让我们深入了解石蕊纸的科学方面。它由地衣制成，地衣是能够在各种环境中生存的自然生物。当这些地衣用特定化学物质处理时，会产生一种染料，当暴露于酸性或碱性溶液时会改变颜色。具体来说，石蕊纸在酸性条件下（pH值小于7）变为红色，在碱性条件下（pH值大于7）变为蓝色。这一特性使得石蕊纸成为实验室和教育环境中不可或缺的工具，学生们在这里学习化学反应和pH值。通过使用石蕊纸，学生可以直观地观察酸和碱的影响，使抽象概念变得更加具体和易于理解。除了其科学实用性，石蕊纸还作为隐喻进入了日常语言。人们常用“石蕊测试”这个术语来描述用单一因素来做出决定或评估的情况。例如，在政治中，候选人在某一特定问题上的立场可能成为选民的石蕊测试。如果候选人的政策与选民的信念一致，他们可能会获得支持；否则，他们可能会被拒绝。这个想法说明了像石蕊纸这样一个简单的指示剂如何影响复杂的人际互动和决策。此外，石蕊测试的概念可以应用于个人关系和道德困境。在友谊中，例如，忠诚可能作为判断谁值得信任的石蕊测试。在面临挑战时，朋友的反应可以揭示他们的真实品格。同样，在伦理讨论中，某些原则可能作为判断对与错的石蕊测试。这些测试可以指导个人在价值观和信仰的导航中。总之，石蕊纸不仅仅是一种科学工具；它体现了一种在生活各个方面进行评估的更广泛原则。它指示酸碱性的能力使其成为实验室的必备品，而作为石蕊测试的隐喻用法帮助我们理解和评估人类行为和决策的复杂性。无论我们是在实验室进行实验还是在个人生活中做出选择，石蕊纸的本质提醒我们清晰指示和诚实评估的重要性。当我们继续在生活中航行时，让我们记住从这张简单纸片中学到的教训，将其原则应用于促进我们所有努力中的更好理解和沟通。