解析 答案是chemical.本题考查语境中选用恰当的词或短语;chemistry n. 化学;chemical adj. 化学的;题干中需要形容词充当changes 的定语;chemical changes化学变化;故答案是:chemical.结果一 题目 【题目】Some kinds of acids react on metalsto cause__(chemistry)changes . 答案 【解析】答案是chemical.本题考查...
Some kinds of acids react on metals to cause ___ (化学的) changes. (根据汉语意思填空) 相关知识点: 试题来源: 解析 chemical [解析] [分析] [详解] 考查形容词。句意:有些酸对金属起反应,引起化学变化。根据名词changes可知此处要用形容词,且由汉语“化学的”可知chemical符合题意。故填chemical。反馈...
or aluminum utensils. Don’t use copper, brass, galvanized, or iron utensils, as these metals will react with acids or salts and cause undesirable color changes in the pickles or form compounds which could be poisonous. Be attentive when timing the processing procedure. For fermented cucumbers a...
Aluminium dissovles in mineral acids and aqueous alkalies and thus shows amphoteric character. A place of aluminum foil is treated with dilute hydrochloric acid or dilute sodium hydroxide solution in a test tube and on bringing a burning match stick near the mouth of the test tube, a pop soun...
Properties of Acids Acids also react with indicators to produce predictable changes in color. An indicator is an organic compound that changes color in an acid and a base. Indicator: Litmus Paper Blue Litmus turns Red in presence of acid It remains blue in a base. Red Litmus turns Blue in...
Phosphatidylamines react with lipid hydroperoxides in the non-radical way to form imines. Phospholipids can also bind heavy metals, which act as prooxidants, to produce inactive, undissociated salts [2].Beneficial effects of dietary phospholipids (PLs) have been mentioned since the early 1900's ...
Tetraethylthiuram disulphide (antabuse, abinyl) has the character of a pseudo-halogen. In organic solvents it reacts with several metals giving salts of diethyldithiocarbamic acid. Copper gives at fir a able cupric salt, but on prolonged treatment with the metal a cuprous salt is obtained. The...
Why do nonmetals tend to form anions when they react to form compounds? Why is the transport number of C d 2 + ion in concentrated solutions of C d I 2 negative? On the basis of electronic structures, explain why most metal halides are ionic. Why do KCl and CaCl2 produce different fl...
5). Intravesicular iron is then thought to be partially reoxidized possibly by MamT to form a high activity ferric oxide, which may react with dissolved ferrous ions to produce magnetite. Additionally, many other proteins associated with the magnetosome membrane could play functional roles involved...
The acquisition of a eukaryotic red or green alga into a host cell to produce a secondary plastid. The diploid life cycle stage in land plants and certain algae; in vascular plants this is a large, conspicuous stage, whereas in bryophytes it is a less conspicuous stage that grows on the ...