Acetic acid and acetic anhydride are flammable. Most other acids are themselves non-flammable but, in general, acids react with metals to evolve hydrogen which is highly flammable. 某些酸类具有相对高的凝点,需要在海运途中加温来防止结块。例如醋酸,无烟硫酸(其凝点根据纯度不同而不同)和高纯度磷酸。
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...
How-do-acids-react-on-metals网络酸如何对金属起反应 网络释义 1. 酸如何对金属起反应 翻译词典... ... How do acids react on metals? 酸如何对金属起反应? Plants react to light. 植物对光照起反应. ... www.tdict.com|基于1 个网页
All metals look shiny when they are freshly cut but become dull when exposed to air (sincemetals reacts with oxygenandwaterin the air), so it is essential to store metals with relative methods and take action to protect them from rusting. ...
aluminum,zinc, 12 grams, react with sufficient hydrochloric acid to produce 5.6 liters of hydrogen (standard condition), then the alloy must contain metal A.Na B.Mg C.Al D.Zn Analysis: under the standard conditions, the amount of hydrogen ...
Acids and basesreact with metals. Acids release hydrogen gas when reacted with metals. Sometimes hydrogen gas is released when a base reacts with a metal, such as reacting sodium hydroxide (NaOH) and zinc. Another typical reaction between a base and a metal is a double displacement reaction,...
Acids react with metals and carbonates.Metal + Acid Salt + Hydrogenmagnesiu 3、m + magnesium chloride + hydrochloric acid hydrogenAcid + Carbonate Salt + Water + Carbon dioxidesulphuric acid + copper sulphate + water + copper carbonate carbon dioxideAcids Lemon juice contains citric acid, and ...
Briefly explain why HCP metals are typically more brittle than FCC and BCC metals. Why do ionic compounds have high melting points? Explain why Zn dissolves in both HCl and HNO3 whereas Cu only dissolves in HNO3. Why we can't use HCl to react with Fe to create FeCl_3?
ACIDS REACT WITH METALS Acid is a compound, metal is an element… So what type of reaction? HCl + Li ___ + ___ HF + Mg ___ + ___ H2S + Al ___ + ___ Therefore… Acid + Metal salt + H2 What type of reaction involves a compound and an element? - ...