law of conservation of mass

简明释义

物质守恒律

英英释义

例句

1.During a combustion reaction, the mass of the reactants equals the mass of the products, which supports the law of conservation of mass (质量守恒定律).

在燃烧反应中，反应物的质量等于产物的质量，这支持了质量守恒定律（质量守恒定律）。

2.In a closed system, the total mass before a chemical reaction will equal the total mass after the reaction, illustrating the law of conservation of mass (质量守恒定律).

在一个封闭系统中，化学反应前的总质量将等于反应后的总质量，这说明了质量守恒定律（质量守恒定律）。

3.The law of conservation of mass (质量守恒定律) is crucial for balancing chemical equations in chemistry.

在化学中，质量守恒定律（质量守恒定律）对于平衡化学方程式至关重要。

4.In cooking, when ingredients are mixed and cooked, the final mass of the dish can be predicted using the law of conservation of mass (质量守恒定律).

在烹饪中，当原料混合并烹饪时，可以使用质量守恒定律（质量守恒定律）预测菜肴的最终质量。

5.When water evaporates, the mass of the water vapor produced is equal to the mass of the liquid water that was heated, demonstrating the law of conservation of mass (质量守恒定律).

当水蒸发时，产生的水蒸气的质量等于加热的液态水的质量，这证明了质量守恒定律（质量守恒定律）。

作文

The law of conservation of mass states that in a closed system, the total mass before and after a chemical reaction remains constant. This fundamental principle is crucial in the field of chemistry and physics, as it helps scientists understand how substances interact during reactions. When we consider a chemical reaction, it is essential to recognize that matter cannot be created or destroyed; it can only change forms. For example, when wood burns, it transforms into ash, smoke, and gases. Although the wood appears to disappear, the mass of the resulting products is equal to the original mass of the wood plus the oxygen consumed during combustion. This illustrates the law of conservation of mass in action.Understanding this law has significant implications in various scientific disciplines. In chemistry, for instance, balancing chemical equations relies on this principle. Chemists must ensure that the number of atoms of each element is equal on both sides of the equation, reflecting the fact that mass is conserved throughout the reaction. If a chemist were to mix hydrogen and oxygen to produce water, they would need to account for the mass of both gases to determine the amount of water produced accurately. This process emphasizes the importance of the law of conservation of mass in predicting the outcomes of chemical reactions.Furthermore, the law of conservation of mass extends beyond chemistry into the realm of physics. In physical processes, such as mechanical systems or thermodynamics, the total mass-energy of a closed system remains constant. This concept is essential for understanding energy transformations, where energy may change forms but the total amount remains the same. For example, in a pendulum, the potential energy at the highest point equals the kinetic energy at the lowest point, illustrating the conservation of energy, which is closely related to the conservation of mass.In environmental science, the law of conservation of mass plays a vital role in understanding ecosystems. When analyzing nutrient cycles, such as the carbon cycle, scientists observe how carbon is transferred through different forms, including carbon dioxide in the atmosphere, organic matter in plants, and fossil fuels underground. Despite these transformations, the total amount of carbon remains constant, showcasing the application of the law of conservation of mass in ecological contexts.In conclusion, the law of conservation of mass is a foundational principle that underpins many scientific theories and practices. Its implications are vast, influencing our understanding of chemical reactions, physical processes, and ecological systems. By recognizing that matter is neither created nor destroyed, we gain insight into the intricate workings of the natural world. This knowledge not only enhances scientific inquiry but also informs practical applications in fields such as engineering, environmental science, and medicine. 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.

质量守恒定律指出，在一个封闭系统中，化学反应前后的总质量保持不变。这个基本原理在化学和物理学领域至关重要，因为它帮助科学家理解物质在反应过程中的相互作用。当我们考虑化学反应时，必须认识到物质不能被创造或毁灭；它只能改变形式。例如，当木材燃烧时，它转化为灰烬、烟雾和气体。尽管木材似乎消失了，但生成物的质量等于原始木材的质量加上燃烧过程中消耗的氧气。这说明了质量守恒定律在实际中的应用。理解这一法则在各个科学学科中具有重要意义。例如，在化学中，平衡化学方程依赖于这一原则。化学家必须确保方程两侧每种元素的原子数相等，以反映反应过程中质量的守恒。如果一位化学家将氢气和氧气混合以生产水，他们需要计算这两种气体的质量，以准确确定产生的水量。这个过程强调了质量守恒定律在预测化学反应结果中的重要性。此外，质量守恒定律超越了化学，延伸到物理学领域。在物理过程中，例如机械系统或热力学，封闭系统的总质量能量保持不变。这个概念对于理解能量转化至关重要，能量可能会改变形式，但总量保持不变。例如，在摆锤中，最高点的势能等于最低点的动能，说明了能量的守恒，这与质量的守恒密切相关。在环境科学中，质量守恒定律在理解生态系统方面发挥着重要作用。当分析营养循环时，例如碳循环，科学家观察碳如何通过不同形式转移，包括大气中的二氧化碳、植物中的有机物以及地下的化石燃料。尽管这些转化发生，碳的总量保持不变，展示了质量守恒定律在生态背景下的应用。总之，质量守恒定律是许多科学理论和实践的基础原则。它的影响是广泛的，影响着我们对化学反应、物理过程和生态系统的理解。通过认识到物质既不被创造也不被毁灭，我们获得了对自然世界复杂运作的深入洞察。这一知识不仅增强了科学探究，还为工程、环境科学和医学等领域的实际应用提供了指导。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的指导原则。