chemical composition

简明释义

化学组成

英英释义

例句

1.The chemical composition of the air can change dramatically in urban areas.

城市地区空气的化学成分可能会发生剧烈变化。

2.The chemical composition of the alloy affects its strength and durability.

合金的化学成分影响其强度和耐用性。

3.The scientist analyzed the chemical composition of the soil to determine its fertility.

科学家分析了土壤的化学成分以确定其肥力。

4.Understanding the chemical composition of water is essential for environmental studies.

理解水的化学成分对环境研究至关重要。

5.Researchers are investigating the chemical composition of various food items for nutritional analysis.

研究人员正在调查各种食品的化学成分以进行营养分析。

作文

The study of materials and their properties is fundamental to many fields, including chemistry, biology, and environmental science. One of the key concepts in understanding these materials is their chemical composition. This term refers to the specific arrangement and types of atoms that make up a substance, which ultimately determines its characteristics and behavior. For instance, water, with the chemical composition of H2O, is essential for life as it has unique properties such as being a universal solvent. In chemistry, the chemical composition is often expressed in terms of the ratio of different elements present in a compound. This can be represented by a chemical formula, which provides insight into the molecular structure and the types of bonds that hold the atoms together. For example, the chemical composition of glucose is C6H12O6, indicating that it contains six carbon atoms, twelve hydrogen atoms, and six oxygen atoms. Understanding this chemical composition is crucial for biochemists studying metabolic processes, as glucose plays a vital role in cellular respiration.Moreover, the chemical composition of a material can significantly influence its physical properties. Take metals, for example; their chemical composition affects their conductivity, malleability, and reactivity. Pure metals like copper (Cu) and aluminum (Al) have distinct chemical compositions that make them suitable for various applications, from electrical wiring to aerospace engineering. In contrast, alloys, which are mixtures of two or more metals, have tailored chemical compositions to enhance specific properties, such as strength and corrosion resistance.In environmental science, understanding the chemical composition of pollutants is essential for assessing their impact on ecosystems. For instance, the chemical composition of carbon dioxide (CO2) and methane (CH4) plays a significant role in climate change. These greenhouse gases trap heat in the atmosphere, and their concentrations are directly linked to human activities such as fossil fuel combustion. By analyzing the chemical composition of these gases, scientists can develop strategies to mitigate their effects and promote sustainable practices.In conclusion, the chemical composition of substances is a fundamental concept that spans multiple scientific disciplines. Whether it is understanding the role of glucose in metabolism, the properties of metals, or the impact of pollutants on the environment, the chemical composition provides valuable insights that drive research and innovation. As we continue to explore the complexities of matter, a thorough grasp of chemical composition will remain essential in our quest for knowledge and solutions to global challenges.

材料及其性质的研究是化学、生物学和环境科学等多个领域的基础。理解这些材料的一个关键概念是它们的化学成分。这个术语指的是构成物质的原子的特定排列和类型，这最终决定了其特性和行为。例如，水的化学成分是H2O，它对生命至关重要，因为它具有作为通用溶剂的独特性质。在化学中，化学成分通常以化合物中不同元素的比例来表示。这可以通过化学式来表示，它提供了分子结构和将原子结合在一起的键的类型的见解。例如，葡萄糖的化学成分是C6H12O6，表明它含有六个碳原子、十二个氢原子和六个氧原子。理解这个化学成分对于研究代谢过程的生物化学家至关重要，因为葡萄糖在细胞呼吸中发挥着重要作用。此外，材料的化学成分可以显著影响其物理性质。以金属为例；它们的化学成分影响它们的导电性、延展性和反应性。像铜（Cu）和铝（Al）这样的纯金属具有独特的化学成分，使它们适用于各种应用，从电缆到航空航天工程。相反，合金是两种或多种金属的混合物，其化学成分经过调整，以增强特定性质，如强度和耐腐蚀性。在环境科学中，了解污染物的化学成分对于评估其对生态系统的影响至关重要。例如，二氧化碳（CO2）和甲烷（CH4）的化学成分在气候变化中起着重要作用。这些温室气体在大气中捕获热量，其浓度与人类活动（如化石燃料燃烧）直接相关。通过分析这些气体的化学成分，科学家可以制定减轻其影响并促进可持续实践的策略。总之，物质的化学成分是一个跨越多个科学学科的基本概念。无论是理解葡萄糖在代谢中的作用、金属的性质，还是污染物对环境的影响，化学成分都提供了推动研究和创新的宝贵见解。随着我们继续探索物质的复杂性，透彻掌握化学成分将在我们追求知识和解决全球挑战的过程中保持重要性。