kiềm

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The Vietnamese word "kiềm" primarily refers to "alkali," which is a type of chemical substance that is basic (as opposed to acidic) and can neutralize acids. It is often used in scientific contexts, particularly in chemistry.

Basic Definition

• Kiềm (noun): Alkali; a substance that has a pH greater than 7 and can react with acids to form salts and water.

Usage Instructions

• "Kiềm" is often found in scientific discussions, especially when talking about chemical reactions, properties of substances, or in environmental science regarding soil and water quality.

Example Sentences

1. "Natri kiềm là một loại kiềm phổ biến trong hóa học." (Sodium hydroxide is a common alkali in chemistry.)
2. "Để trung hòa axit, bạn cần thêm một lượng kiềm thích hợp." (To neutralize an acid, you need to add an appropriate amount of alkali.)

Advanced Usage

In more advanced discussions, "kiềm" can be used in contexts such as: - Soil Chemistry: Discussing the effects of alkali on soil pH and nutrient availability. - Industrial Applications: Referring to the use of alkalis in manufacturing processes, such as in the production of soap or paper.

Word Variants

• Kiềm hóa: This means “alkalization,” referring to the process of making a substance more alkaline.
• Kiềm mạnh: Strong alkali; refers to highly basic substances, such as sodium hydroxide.
• Kiềm yếu: Weak alkali; refers to less basic substances, such as ammonium hydroxide.

Different Meanings

While "kiềm" primarily means "alkali," it can also be used in other contexts: - To control or restrain: In a metaphorical sense, "kiềm chế" means to restrain or hold back one's emotions or actions.

Synonyms

• Bazo: Another term for "base" in a chemical context.
• Chất kiềm: This phrase means "alkaline substance."

Conclusion

Understanding the word "kiềm" is important for learners interested in science, particularly chemistry.

Academic

noun

1. alkali