解析 C。解析:化学变化是产生新物质的变化。A 改变物质颜色可能是物理变化,如颜料混合。B 冰融化是物理变化,状态改变。C 燃烧木材产生新物质,是化学变化。D 压扁易拉罐是物理变化,形状改变。本题考查对化学变化概念的理解,涉及词汇有 chemical change(化学变化)、substance(物质)等。
A. In the case of B. In case C. In case of D. In event of 相关知识点: 试题来源: 解析 A in case of sth.:假使,如果;in case:以防,万一;in event of:如果,以防;三项都不符合题意。in the cause of意为“在,,过程中”。句意:在化学变化中一种新物质生成了。反馈...
asimile 相似 [translate] athose set forth below 下面被指出的那些 [translate] aspained spained [translate] aThe best title for this passage is 19th-Century Family . 正在翻译,请等待... [translate] aIt is hard to explain what is a chemical change 解释是坚硬的什么是化学变化 [translate] ...
aIn some countries young people are encouraged to work or traved for a year betwen finishing high school and starting university studies 在某些个国家青年人被鼓励工作或traved一年在精整高中和开始大学研究之间 [translate] aIt is hard to explain how is a chemical change 解释是坚硬的怎么是化学变化 [...
BROSNAN, T., When is a chemical change not a chemical change? Education in Chem- istry, 36 (2), 56, 1999.Brosnan, T. When is a chemical change not a chemical change, Educ. Chem., 36(2), 56, 1999.Brosnan, T. (1999). When is a chemical change not a chemical change?
A. chemical change B. physical change C. both physical and chemical change D. neither physical nor chemical change 相关知识点: 试题来源: 解析 B。解析:“For example, when ice melts, it changes from a solid to a liquid, but it is still water.”说明冰融化是物理变化。反馈...
解析 substance【答案】substance【核心短语/词汇】substance:物质【翻译】在化学变化中,总是有新的物质形成。【解析】根据题干要求,本题需要表达“在化学变化中,总是有新的物质形成”这一语义。“物质”的英文是“substance”,根据句意,这里用单数。因此本题答案是“substance”。
There are two kinds of changes — chemical change and physical change. In a chemical change there is always a new substance( 物质 ) formed. Breaking up water into hydrogen( 氢气 ) and oxygen( 氧气 ) is a chemical change. In each of the chemical change at least one new substance is for...
解答一 举报 A句意:在化学变化中,一种新的物质生成了.in the case of:至于…,在……的情况下,就…来说,就……而言,对……而言 It's the kind of story we think of as myth.But in the case of Lincoln,the story is true.我们... 解析看不懂?免费查看同类题视频解析查看解答 更多答案(2) ...
Some can have strong reactions with other elements. Such interactions can change the elements.Answer and Explanation: A chemical change refers to a change in the arrangement of atoms and, ultimately, structure and characteristics of an element. When elements undergo......