active metal

简明释义

活性金属

英英释义

例句

1.Sodium is classified as an active metal because it reacts vigorously with water.

钠被归类为活泼金属，因为它与水剧烈反应。

2.Lithium batteries utilize the properties of active metals to store energy efficiently.

锂电池利用活泼金属的特性有效地储存能量。

3.Magnesium, an active metal, is often used in lightweight alloys for aerospace applications.

镁是一种活泼金属，常用于航空航天应用中的轻合金。

4.The corrosion resistance of active metals is generally lower than that of noble metals.

活泼金属的耐腐蚀性通常低于贵金属。

5.When dealing with active metals, safety precautions are essential to prevent accidents.

处理活泼金属时，安全预防措施至关重要，以防止事故发生。

作文

The term active metal refers to a category of metals that have a high tendency to lose electrons and form positive ions. These metals are highly reactive and readily participate in chemical reactions, especially with nonmetals such as oxygen and halogens. Common examples of active metals include lithium, sodium, potassium, calcium, and magnesium. Their reactivity is due to their low electronegativity and ionization energy, which makes it easier for them to release electrons. In various applications, active metals play crucial roles. For instance, in batteries, lithium is widely used due to its ability to store and release energy efficiently. The chemical properties of active metals allow them to react with other substances, which can be harnessed for practical uses. For example, sodium reacts vigorously with water, producing hydrogen gas and heat, which can be utilized in specific industrial processes. Moreover, active metals are often used in the production of alloys. Alloys are mixtures of metals that can enhance the properties of the base metal. By combining active metals with less reactive metals, manufacturers can create materials that are stronger, lighter, or more resistant to corrosion. This is particularly important in industries such as aerospace and automotive, where the performance and durability of materials are critical.However, the high reactivity of active metals also poses certain risks. For instance, when stored improperly, they can react with moisture in the air or with other substances, leading to hazardous situations. Therefore, it is essential to handle active metals with care and store them in appropriate conditions to prevent unwanted reactions.In conclusion, understanding the properties and applications of active metals is vital in both chemistry and industry. Their ability to react and form compounds makes them invaluable for various technological advancements. As research continues to explore new ways to utilize these metals, we can expect to see even more innovative applications in the future. The study of active metals not only enhances our knowledge of chemical reactions but also contributes to the development of safer and more efficient materials for everyday use.

“活泼金属”这一术语指的是一类具有较高失去电子和形成正离子倾向的金属。这些金属反应性强，容易参与化学反应，尤其是与氧气和卤素等非金属的反应。常见的活泼金属包括锂、钠、钾、钙和镁。它们的反应性源于其较低的电负性和电离能，使得它们更容易释放电子。在各种应用中，活泼金属发挥着至关重要的作用。例如，在电池中，由于锂能够高效地存储和释放能量，因此被广泛使用。活泼金属的化学性质使它们能够与其他物质反应，这可以被用于实际用途。例如，钠与水剧烈反应，产生氢气和热量，这可以在特定的工业过程中利用。此外，活泼金属通常用于合金的生产。合金是金属的混合物，可以增强基体金属的性能。通过将活泼金属与不太活泼的金属结合，制造商可以创造出更强、更轻或更耐腐蚀的材料。这在航空航天和汽车等行业尤为重要，因为材料的性能和耐用性至关重要。然而，活泼金属的高反应性也带来了一定的风险。例如，如果存储不当，它们可能会与空气中的水分或其他物质反应，导致危险情况。因此，处理活泼金属时必须小心，并在适当的条件下存放，以防止不必要的反应。总之，理解活泼金属的性质和应用对于化学和工业都是至关重要的。它们反应生成化合物的能力使它们在各种技术进步中不可或缺。随着研究不断探索利用这些金属的新方法，我们可以期待在未来看到更多创新的应用。对活泼金属的研究不仅增强了我们对化学反应的理解，还有助于开发更安全、更高效的日常使用材料。