英文字典中文字典Word104.com



中文字典辭典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z   







請輸入英文單字,中文詞皆可:

alkalis    
n. 鹼質

鹼質

Alkali \Al"ka*li\ (?; 277), n.; pl. {Alkalis} or {Alkalies}. [F.
alcali, ultimately fr. Ar. alqal[imac] ashes of the plant
saltwort, fr. qalay to roast in a pan, fry.]
1. Soda ash; caustic soda, caustic potash, etc.
[1913 Webster]

2. (Chem.) One of a class of caustic bases, such as soda,
potash, ammonia, and lithia, whose distinguishing
peculiarities are solubility in alcohol and water, uniting
with oils and fats to form soap, neutralizing and forming
salts with acids, turning to brown several vegetable
yellows, and changing reddened litmus to blue.
[1913 Webster]

3. Soluble mineral matter, other than common salt, contained
in soils of natural waters. [Western U. S.]
[Webster 1913 Suppl.]

{Fixed alkalies}, potash and soda.

{Vegetable alkalies}. Same as {Alkaloids}.

{Volatile alkali}, ammonia, so called in distinction from the
fixed alkalies.
[1913 Webster]

請選擇你想看的字典辭典:
單詞字典翻譯
Alkalis查看 Alkalis 在Google字典中的解釋Google英翻中〔查看〕
Alkalis查看 Alkalis 在Yahoo字典中的解釋Yahoo英翻中〔查看〕





安裝中文字典英文字典查詢工具!


中文字典英文字典工具:
選擇顏色:
輸入中英文單字

































































英文字典中文字典相關資料:
  • Alkali - Wikipedia
    In chemistry, an alkali ( ˈælkəlaɪ ⓘ; from the Arabic word al-qāly, القالِي) is a basic salt of an alkali metal or an alkaline earth metal An alkali can also be defined as a base that dissolves in water A solution of a soluble base has a pH greater than 7 0
  • Alkali | Chemical Compound, Properties Uses | Britannica
    alkali, any of the soluble hydroxides of the alkali metals— i e , lithium, sodium, potassium, rubidium, and cesium Alkalies are strong bases that turn litmus paper from red to blue; they react with acids to yield neutral salts; and they are caustic and in concentrated form are corrosive to organic tissues
  • What Is An Alkali In Chemistry? | The Science Blog
    Alkalis are associated with a group of alkali metals and their compounds These metals include hydrogen (H), lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs), and francium (Fr)
  • ALKALI Definition Meaning - Merriam-Webster
    The meaning of ALKALI is a soluble salt obtained from the ashes of plants and consisting largely of potassium or sodium carbonate; broadly : a substance (such as a hydroxide or carbonate of an alkali metal) having marked basic properties How to use alkali in a sentence
  • Alkali: Properties, Uses, and Scientific Insights Explained
    Alkalis are defined as the soluble hydroxides of alkali metals, which are characterized by their ability to neutralize acids In chemistry, they are classified as bases that dissolve in water to produce alkaline (basic) solutions
  • What is an Alkali? | Alkaline Solution
    Alkalis are those bases that can dissolve in water, while those that cannot dissolve in water are not alkalis This means that all bases are not alkaline, except those that can dissolve in water
  • Alkali - chemeurope. com
    Alkalis are best known for being bases (compounds with pH greater than 7) that dissolve in water The adjective alkaline is commonly used in English as a synonym for base, especially for soluble bases
  • ALKALI Definition Meaning | Dictionary. com
    Alkali definition: any of various bases, the hydroxides of the alkali metals and of ammonium, that neutralize acids to form salts and turn red litmus paper blue See examples of ALKALI used in a sentence
  • ALKALI | English meaning - Cambridge Dictionary
    Although they had clear morphological characteristics, they consisted of at least three families - acid salts, volatile alkalis, and vinous or inflammable spirits
  • Alkali metal | Definition, Properties, Facts | Britannica
    What is the definition of an alkali metal? Why are they called the alkali metals? The alkali metals are so named because when they react with water they form alkalies Alkalies are hydroxide compounds of these elements, such as sodium hydroxide and potassium hydroxide Alkalies are very strong bases that are caustic





中文字典-英文字典  2005-2009

|中文姓名英譯,姓名翻譯 |简体中文英文字典