百度试题 结果1 题目(2)This is a mixturewater and salt.这是一种由水和盐构成的混合物。 相关知识点: 试题来源: 解析 consisting of/made up of∴CN 反馈 收藏
Salt water is a/an ___. A. element B. compound C. mixture D. solution 相关知识点: 试题来源: 解析 D。盐水是溶液。选项 A“element”是元素;选项 B“compound”是化合物;选项 C“mixture”是混合物,盐水严格来说是溶液;选项 D“solution”是溶液。反馈...
D The solution is a mixture of salt and water. 相关知识点: 试题来源: 解析 D The solution is a mixture of salt and water. 该方法利用盐溶于水而沙不溶的性质进行分离。第一步,将岩盐粉碎并加入温水,盐溶解形成盐水溶液,沙子则沉淀在底部。第二步,过滤将沙子与盐水溶液分离。第三步,蒸发水分,得到...
In a mixture, the ratio of salt to water is 0.25 : 1. If there is 1 liter of water, how much salt is there? A. 0.25 liters B. 0.5 liters C. 0.75 liters D. 1 liter 相关知识点: 试题来源: 解析 A。比例为 0.25 : 1,1 升水对应的盐就是 0.25 升。
为什么您不采取叶子在Anne的书外面,并且有您的头发切开更短? [translate] a我已经在家 I already in home [translate] aSaWhen an inorganic salt is added to mixture of water and a watermiscible SaWhen一粒无机盐增加到混合物水和watermiscible [translate] ...
A. adding water to dissolve the salt B. filtering the mixture C. evaporating the water D. weighing the mixture 相关知识点: 试题来源: 解析 D。解析:在分离盐和沙的混合物实验中,通常第一步是称量混合物,这样可以得到混合物的初始质量等数据。A选项加水溶解盐不是第一步;B选项过滤混合物是在溶解之后...
Salt, Air, Water, Alum, Sugar Solution Answer: Air Two matters do not combine with chemically called mixture. Air is the mixture of gases like N2, O2, H2. Alum is an addition compound (pure) (K2SO4. Al2(SO4)3.24H2O). Salt is a compound, (pure). Chemical formula of common salt...
1 Salt is soluble in water, but sand is insoluble in water. This difference allows a mixture of salt and sand to be separated using this apparatus.Step 1Step 2Step 3(a)Use words from the box to complete the sentences. Each word may be used once,more than once or not at all.beaker...
题目2Salinization means a mixture of salt and water.正确的答案是“对”。题目3Marc Van is now using se 16、a water to grow healthy and tasty vegetables.正确的答案是“错”。题目4A computer program named “ sensors keeps the same salinity in eight testing areas.正确的答案是“错”。题目5The ...
[A]keepsugarandsaltinwater [B]drinkitasoftenasnecessary [C]takeitasmuchaspossible [D]useittokillthebacteria 每天世界上有40000名年少的孩子死亡。一年就是1500万。许多这样的死亡是可以阻止的。实际上,专家说,现在的技术可以挽救一半这样的孩童的生命。这些技术医学上有效,使用简单且价格便宜。最大的任务就是让...