litmus paper

简明释义

石蕊试纸

英英释义

例句

1.When testing the soil, the gardener used litmus paper to check its pH level.

在测试土壤时，园丁使用试纸来检查其pH值。

2.In chemistry class, we learned how litmus paper can indicate whether a substance is acidic or basic.

在化学课上，我们学习了如何使用试纸来指示物质是酸性还是碱性。

3.The litmus paper turned red, indicating that the solution was acidic.

这试纸变成红色，表明溶液是酸性的。

4.A quick test with litmus paper showed that the water was neutral.

用试纸快速测试显示水是中性的。

5.The teacher used litmus paper to demonstrate the acidity of the solution.

老师使用试纸来演示溶液的酸性。

作文

In the realm of science, particularly in chemistry, we often come across various tools and techniques 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 use of litmus paper dates back to the 17th century when it was first discovered that certain dyes could change color in response to pH levels. This remarkable property of litmus paper makes it an invaluable resource in both educational and professional settings.When we talk about the functionality of litmus paper, it is essential to understand what pH is. pH is a scale used to specify how acidic or basic a water-based solution is. It ranges from 0 to 14, with 7 being neutral. Solutions with a pH less than 7 are considered acidic, while those with a pH greater than 7 are alkaline. Litmus paper provides a straightforward way to measure this scale. Typically, there are two types of litmus paper: red and blue. Red litmus paper turns blue in the presence of a base, while blue litmus paper turns red in the presence of an acid.The application of litmus paper extends beyond the laboratory. In everyday life, many people encounter situations where they need to test the pH of various substances. For instance, gardeners often use litmus paper to check the acidity of their soil, as different plants thrive in different pH levels. Similarly, aquarists monitor the pH of their fish tanks to ensure a healthy environment for aquatic life. This versatility demonstrates how litmus paper serves not only as a scientific instrument but also as a practical tool in daily activities.Moreover, the concept of litmus paper can be metaphorically applied in various contexts. Just as litmus paper reveals the nature of a solution, we can think of certain experiences or challenges in life that act as a 'litmus test' for our character or beliefs. For example, a difficult situation may reveal one's true values and priorities, much like how litmus paper reveals the acidity or alkalinity of a solution. In this sense, the term 'litmus test' has evolved into a broader metaphor used in discussions about ethics, politics, and personal integrity.In conclusion, litmus paper is more than just a tool for measuring pH; it represents a fundamental principle in science that allows us to understand the world around us. Its applications in both scientific and everyday contexts highlight its importance and versatility. Furthermore, the metaphorical use of litmus paper in assessing character and values adds depth to its significance. Whether in a lab or in life, litmus paper serves as a reminder of the importance of understanding the underlying qualities of the things we encounter, encouraging us to look deeper and question the nature of our experiences.

在科学领域，特别是化学中，我们经常会遇到各种工具和技术，这些工具和技术帮助我们理解物质的特性。其中一个工具就是石蕊纸，它是一种简单而有效的指示剂，用于确定溶液的酸碱性。石蕊纸的使用可以追溯到17世纪，当时人们首次发现某些染料能够根据pH值变化颜色。这种石蕊纸的显著特性使其成为教育和专业环境中不可或缺的资源。当我们谈论石蕊纸的功能时，了解什么是pH是至关重要的。pH是一个用于指定水基溶液的酸性或碱性的尺度。它的范围从0到14，其中7被认为是中性。pH小于7的溶液被视为酸性，而pH大于7的溶液则是碱性。石蕊纸提供了一种简单的方法来测量这个尺度。通常，有两种类型的石蕊纸：红色和蓝色。红色石蕊纸在碱性环境中变为蓝色，而蓝色石蕊纸在酸性环境中变为红色。石蕊纸的应用超出了实验室。在日常生活中，许多人会遇到需要测试各种物质pH值的情况。例如，园丁经常使用石蕊纸来检查土壤的酸度，因为不同的植物在不同的pH值下生长良好。同样，养鱼者监测鱼缸的pH值，以确保水生生物的健康环境。这种多功能性表明，石蕊纸不仅作为科学仪器，也作为日常活动中的实用工具。此外，石蕊纸的概念可以在各种上下文中隐喻性地应用。正如石蕊纸揭示了溶液的性质一样，我们可以想象生活中的某些经历或挑战充当“试金石”，来检验我们的性格或信仰。例如，困难的情况可能揭示一个人的真实价值观和优先事项，就像石蕊纸揭示溶液的酸碱性一样。从这个意义上说，“试金石”一词已经演变为在讨论伦理、政治和个人诚信时使用的更广泛的隐喻。总之，石蕊纸不仅仅是一个测量pH的工具；它代表了科学中的一个基本原则，使我们能够理解周围的世界。它在科学和日常生活中的应用突显了其重要性和多样性。此外，石蕊纸在评估性格和价值观方面的隐喻使用为其意义增添了深度。无论是在实验室还是生活中，石蕊纸都提醒我们理解我们所遇到事物的基本特性的重要性，鼓励我们更深入地思考并质疑我们经历的本质。