litmus paper

简明释义

石蕊试纸

英英释义

例句

1.In chemistry class, we learned how to use litmus paper for pH testing.

在化学课上，我们学习了如何使用试纸进行pH测试。

2.The litmus paper turned blue, indicating that the solution was basic.

该试纸变成蓝色，表明溶液是碱性的。

3.To check if the soil is acidic, you can use litmus paper.

要检查土壤是否酸性，可以使用试纸。

4.The scientist used litmus paper to test the acidity of the solution.

科学家使用试纸来测试溶液的酸度。

5.The teacher demonstrated how litmus paper works with different liquids.

老师演示了试纸如何与不同液体反应。

作文

In the realm of science, particularly in chemistry, we often encounter various tools and indicators that help us understand the properties of substances. One such tool is litmus paper, a simple yet effective means of determining the acidity or alkalinity of a solution. The significance of litmus paper extends beyond the laboratory; it serves as a metaphor in everyday language to indicate a test or indicator of a situation's true nature.The origins of litmus paper can be traced back to the natural dyes extracted from lichens. This paper changes color when exposed to acidic or basic solutions, turning red in acidic environments and blue in alkaline conditions. This property makes litmus paper an invaluable resource for scientists and students alike, allowing them to quickly assess the pH level of various liquids without the need for complex equipment.Beyond its scientific applications, the term litmus paper has permeated popular culture and language. It is often used metaphorically to describe a situation that reveals the underlying truth about a person's character or the nature of a situation. For instance, one might say, "The recent election served as a litmus paper for the public's opinion on environmental policies." In this context, litmus paper represents a critical test that reflects broader societal values and priorities.The versatility of litmus paper as both a scientific instrument and a metaphorical device illustrates its importance in our understanding of the world around us. In chemistry, it provides immediate feedback about the chemical composition of a solution, while in social discussions, it acts as a gauge for public sentiment or moral standing. This duality enhances our communication by providing a clear reference point for discussions about complex issues.Moreover, the use of litmus paper in educational settings cannot be overstated. Students learning about acids and bases often perform experiments using litmus paper to observe firsthand how different substances interact with it. This hands-on experience reinforces theoretical knowledge and fosters a deeper understanding of chemical principles. It also encourages critical thinking, as students must analyze their results and draw conclusions based on their observations.In conclusion, litmus paper is more than just a piece of paper used in chemical experiments; it symbolizes the essence of testing and revealing truths in various contexts. Whether in a laboratory setting or in discussions about societal issues, litmus paper remains a powerful tool for assessment. By embracing its significance, we can enhance our understanding of both the physical and metaphorical tests we encounter in life. Ultimately, recognizing the role of litmus paper in our lives allows us to appreciate the delicate balance between science and society, fostering a more informed and engaged citizenry.

在科学领域，特别是在化学中，我们经常会遇到各种工具和指示剂，这些工具和指示剂帮助我们理解物质的性质。其中一个工具是石蕊纸，这是一种简单而有效的方法，用于确定溶液的酸性或碱性。石蕊纸的重要性不仅限于实验室；它在日常语言中也作为一种隐喻，指示某种情况的真实本质。石蕊纸的起源可以追溯到从地衣中提取的天然染料。当暴露于酸性或碱性溶液时，这种纸会变色，在酸性环境中呈红色，而在碱性条件下则呈蓝色。这一特性使得石蕊纸成为科学家和学生们不可或缺的资源，使他们能够快速评估各种液体的pH水平，而无需复杂的设备。除了科学应用外，石蕊纸这个词已经渗透到流行文化和语言中。它常常被隐喻地用来描述一种揭示个人性格或情况本质的测试。例如，人们可能会说：“最近的选举作为石蕊纸，反映了公众对环境政策的看法。”在这种情况下，石蕊纸代表着一个关键的测试，反映更广泛的社会价值观和优先事项。石蕊纸作为科学仪器和隐喻工具的多功能性，展示了它在我们理解周围世界中的重要性。在化学中，它提供了关于溶液化学成分的即时反馈，而在社会讨论中，它充当公众情绪或道德立场的衡量标准。这种双重性通过为关于复杂问题的讨论提供明确的参考点，增强了我们的沟通。此外，石蕊纸在教育环境中的使用也不可低估。学习酸和碱的学生通常会使用石蕊纸进行实验，以亲身观察不同物质与其相互作用的过程。这种动手实践强化了理论知识，并促进了对化学原理的更深理解。它还鼓励批判性思维，因为学生必须分析结果并根据观察得出结论。总之，石蕊纸不仅仅是一张用于化学实验的纸；它象征着在各种背景下测试和揭示真相的本质。无论是在实验室环境中还是在关于社会问题的讨论中，石蕊纸始终是评估的重要工具。通过接受它的意义，我们可以加深对生活中所遇到的物理和隐喻测试的理解。最终，认识到石蕊纸在我们生活中的作用使我们能够欣赏科学与社会之间的微妙平衡，促进更有知识和参与感的公民意识。