law of conservation of mass

简明释义

质量守恒定律

英英释义

例句

1.The law of conservation of mass (质量守恒定律) can be observed when baking bread; the ingredients weigh the same before and after baking.

在烘焙面包时，可以观察到质量守恒定律（质量守恒定律）；烘焙前后的原料重量是相同的。

2.During a combustion reaction, the law of conservation of mass (质量守恒定律) dictates that the mass of the fuel and oxygen equals the mass of the products formed.

在燃烧反应中，质量守恒定律（质量守恒定律）规定燃料和氧气的质量等于生成产品的质量。

3.When water evaporates, it seems to disappear, but according to the law of conservation of mass (质量守恒定律), the mass is still present in vapor form.

当水蒸发时，它似乎消失了，但根据质量守恒定律（质量守恒定律），质量仍以蒸汽形式存在。

4.In chemical reactions, the law of conservation of mass (质量守恒定律) ensures that atoms are not created or destroyed.

在化学反应中，质量守恒定律（质量守恒定律）确保原子不会被创造或毁灭。

5.In a closed system, the total mass of the reactants is equal to the total mass of the products, illustrating the law of conservation of mass (质量守恒定律).

在一个封闭系统中，反应物的总质量等于产品的总质量，这说明了质量守恒定律（质量守恒定律）。

作文

The law of conservation of mass states that mass cannot be created or destroyed in a closed system through ordinary chemical reactions or physical changes. This fundamental principle is one of the cornerstones of classical physics and chemistry. Understanding the law of conservation of mass is essential for students and professionals alike, as it provides a framework for analyzing and predicting the outcomes of chemical reactions.In practical terms, the law of conservation of mass means that when a chemical reaction occurs, the total mass of the reactants must equal the total mass of the products. For instance, if you burn a piece of wood, the mass of the ashes, gases, and any remaining charcoal will equal the original mass of the wood before it was burned. This principle can be observed in various experiments, such as mixing vinegar and baking soda to produce carbon dioxide gas. Although the substances change form, the total mass remains constant.Historically, the law of conservation of mass was first formulated by Antoine Lavoisier in the 18th century. His meticulous experiments demonstrated that during chemical reactions, the mass of the substances involved did not change. This finding was revolutionary and laid the groundwork for modern chemistry. Lavoisier's work emphasized the importance of careful measurement and observation, which are critical in scientific inquiry.The implications of the law of conservation of mass extend beyond chemistry into fields such as engineering, environmental science, and even economics. For example, in engineering, understanding how materials behave during construction projects relies heavily on this law. Engineers must ensure that the materials used will maintain structural integrity without losing mass over time.In environmental science, the law of conservation of mass helps scientists understand biogeochemical cycles, such as the carbon cycle. By tracking the mass of carbon as it moves through different forms—such as carbon dioxide in the atmosphere, organic matter in plants, and fossil fuels underground—scientists can better predict climate change impacts and devise strategies for mitigation.Moreover, the law of conservation of mass also plays a vital role in industrial processes. In manufacturing, ensuring that raw materials are converted into products without loss of mass is crucial for efficiency and cost-effectiveness. Companies strive to minimize waste and maximize output, all while adhering to this fundamental law.In conclusion, the law of conservation of mass is a pivotal concept that underpins much of our understanding of the physical world. It teaches us that while substances may change forms and undergo transformations, the total mass remains constant. This principle not only serves as a foundational element in scientific studies but also has practical applications across various industries. As we continue to explore the complexities of matter and energy, the law of conservation of mass will remain a guiding principle in our quest for knowledge and innovation.

质量守恒定律指出，在封闭系统中，质量不能通过普通化学反应或物理变化被创造或毁灭。这个基本原则是经典物理学和化学的基石之一。理解质量守恒定律对学生和专业人士来说至关重要，因为它为分析和预测化学反应的结果提供了框架。在实际操作中，质量守恒定律意味着，当发生化学反应时，反应物的总质量必须等于生成物的总质量。例如，如果你燃烧一块木头，灰烬、气体和任何剩余的炭的质量将等于木头燃烧前的原始质量。这个原则可以通过各种实验观察到，例如将醋和小苏打混合以产生二氧化碳气体。虽然物质的形式发生了变化，但总质量保持不变。历史上，质量守恒定律最早由安托万·拉瓦锡在18世纪提出。他细致的实验表明，在化学反应过程中，参与物质的质量没有变化。这一发现是革命性的，为现代化学奠定了基础。拉瓦锡的工作强调了精确测量和观察的重要性，这在科学探究中至关重要。质量守恒定律的影响超越了化学，延伸到工程、环境科学甚至经济学等领域。例如，在工程学中，理解材料在建设项目中的行为在很大程度上依赖于这一法则。工程师必须确保所使用的材料在时间推移中保持结构完整性而不失去质量。在环境科学中，质量守恒定律帮助科学家理解生物地球化学循环，例如碳循环。通过追踪碳的质量如何在不同形式之间移动——如大气中的二氧化碳、植物中的有机物质以及地下的化石燃料——科学家能够更好地预测气候变化的影响，并制定减缓策略。此外，质量守恒定律在工业过程中也发挥着至关重要的作用。在制造业中，确保原材料在转化为产品的过程中没有质量损失对于提高效率和降低成本至关重要。公司努力减少废物并最大化产出，同时遵循这一基本法则。总之，质量守恒定律是支撑我们对物质世界理解的关键概念。它教导我们，尽管物质可能会改变形态并经历转化，但总质量保持不变。这个原则不仅作为科学研究的基础元素，还在各个行业中有着实际应用。随着我们继续探索物质和能量的复杂性，质量守恒定律将始终是我们追求知识和创新的指导原则。