alkalis

简明释义

英[ˈæl.kə.laɪz]美[ˈæl.kə.laɪz]

n. 碱质，碱金属

英英释义

单词用法

同义词

反义词

例句

1.Most viruses can be destroyed by high temperatures or strong alkalis, or shaken to pieces by sound waves - but not this one.

多数病毒可以被高温或者被强碱杀死，或者可以被声波震荡成碎片——但这种病毒不是这样。

2.It can be used for general service steam, gases, solvents, mild acids, alkalis and most abrasive liquids.

能应用于一般工况下的蒸汽、煤气、溶剂、中酸、中碱及大多数易磨损介质。

3.They dissolve readily in water, dilute acids, and alkalis but do not coagulate readily on heating.

组蛋白在水中很容易溶解，其水溶液呈弱酸性和碱性，加热时不立即凝结。

4.As well as being resistant to treatment, they can also survive attack with acids, alkalis and detergents.

不仅对药物抵抗，它们在酸、碱和去污剂中同样能很好存活。

5.The results showed that only small amount of alkalis in feldspar were extracted when autoclaved with water, and the majority of extract is sodium oxide.

结果表明：长石在水中碱溶出量比较少，溶出的碱主要是钠碱。

6.Acids neutralize alkalis and vice versa.

酸能使碱中和，碱也能使酸中和。

7.In agriculture, alkalis 碱 are used to improve soil quality.

在农业中，alkalis 碱被用来改善土壤质量。

8.The reaction between acids and alkalis 碱 is an important concept in titration.

酸与alkalis 碱之间的反应是滴定中一个重要的概念。

9.In chemistry class, we learned that alkalis 碱 can neutralize acids.

在化学课上，我们了解到alkalis 碱可以中和酸。

10.Many household cleaners contain alkalis 碱 to help remove grease.

许多家庭清洁剂含有alkalis 碱，以帮助去除油脂。

11.The pH level of a solution can be increased by adding alkalis 碱.

通过添加alkalis 碱，可以提高溶液的pH值。

作文

Alkalis play a crucial role in various chemical processes and have significant applications in both industrial and household settings. In chemistry, an alkali (碱) is a base that dissolves in water, producing hydroxide ions (OH-). Common examples of alkalis (碱) include sodium hydroxide (NaOH), potassium hydroxide (KOH), and calcium hydroxide (Ca(OH)2). These substances are known for their ability to neutralize acids, which makes them essential in many chemical reactions.One of the most well-known applications of alkalis (碱) is in the manufacturing of soap. The process of saponification involves the reaction of fats or oils with an alkali (碱), resulting in the formation of soap and glycerin. This reaction not only transforms the raw materials into a useful product but also highlights the importance of alkalis (碱) in everyday life. Without alkalis (碱), we would not have the soaps and detergents that are vital for maintaining hygiene and cleanliness.In addition to soap making, alkalis (碱) are widely used in the textile industry. They are employed in the process of dyeing fabrics, where they help to fix dyes onto the material. The presence of alkalis (碱) ensures that the colors adhere properly, resulting in vibrant and long-lasting textiles. Moreover, alkalis (碱) are also utilized in the paper industry for pulping wood, which is an essential step in producing paper products.Another important area where alkalis (碱) are used is in water treatment. Many municipal water systems add alkalis (碱) such as lime (calcium hydroxide) to adjust the pH levels of water, making it less acidic and more suitable for consumption. This process not only helps in improving the taste of the water but also prevents corrosion in pipes and reduces the leaching of harmful metals.From a scientific perspective, understanding alkalis (碱) is fundamental for students and professionals in fields such as chemistry, biology, and environmental science. The basic properties of alkalis (碱) include their slippery feel, bitter taste, and their ability to turn red litmus paper blue. These characteristics are not just academic; they have real-world implications in safety protocols and laboratory practices. For instance, when handling alkalis (碱), it is crucial to wear protective gear to avoid skin irritation and chemical burns.In conclusion, alkalis (碱) are indispensable in numerous applications ranging from household products to industrial processes. Their ability to neutralize acids, facilitate chemical reactions, and improve product quality underscores their significance. As we continue to explore the vast world of chemistry, a deeper understanding of alkalis (碱) will undoubtedly enhance our knowledge and appreciation of the materials and processes that shape our daily lives. Whether in soap making, water treatment, or textile production, alkalis (碱) will remain a key component in the chemistry that surrounds us.

碱在各种化学过程中发挥着至关重要的作用，并在工业和家庭环境中具有重要应用。在化学中，alkali（碱）是指一种在水中溶解并产生氢氧根离子（OH-）的碱。常见的alkalis（碱）包括氢氧化钠（NaOH）、氢氧化钾（KOH）和氢氧化钙（Ca(OH)2）。这些物质以其中和酸的能力而闻名，这使它们在许多化学反应中至关重要。alkalis（碱）的一个最著名的应用是在肥皂制造中。皂化过程涉及脂肪或油与alkali（碱）的反应，形成肥皂和甘油。这一反应不仅将原材料转变为有用的产品，还突显了alkalis（碱）在日常生活中的重要性。如果没有alkalis（碱），我们就不会拥有维持卫生和清洁所必需的肥皂和洗涤剂。除了肥皂制造，alkalis（碱）在纺织行业中也被广泛使用。它们用于染色织物的过程中，帮助将染料固定在材料上。alkalis（碱）的存在确保颜色能够正确附着，从而产生鲜艳且持久的纺织品。此外，alkalis（碱）还用于纸张工业的木材制浆，这是生产纸制品的重要步骤。另一个alkalis（碱）使用的重要领域是水处理。许多市政水系统添加alkalis（碱），如石灰（氢氧化钙），以调整水的pH值，使其不那么酸性，更适合饮用。这个过程不仅有助于改善水的味道，还可以防止管道腐蚀并减少有害金属的浸出。从科学的角度来看，理解alkalis（碱）对于化学、生物和环境科学等领域的学生和专业人士来说是基础。alkalis（碱）的基本特性包括滑腻的感觉、苦味以及使红色石蕊试纸变蓝的能力。这些特性不仅仅是学术性的；它们在安全协议和实验室实践中具有现实意义。例如，在处理alkalis（碱）时，穿戴保护装备以避免皮肤刺激和化学烧伤是至关重要的。总之，alkalis（碱）在从家庭产品到工业过程的众多应用中不可或缺。它们中和酸、促进化学反应和改善产品质量的能力强调了它们的重要性。随着我们继续探索广阔的化学世界，对alkalis（碱）的更深入理解无疑会增强我们对塑造我们日常生活的材料和过程的知识和欣赏。无论是在肥皂制造、水处理还是纺织生产中，alkalis（碱）将始终是围绕我们的化学中的关键组成部分。