A chemical change is different from a physical change because in a chemical change ___. A. the appearance changes B. the composition changes C. the size changes D. the weight changes 相关知识点: 试题来源: 解析 B。化学变化与物理变化不同在于化学变化中物质的组成发生了变化。反馈 ...
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...
aIt is any chemical, biological, or physical change in water quality that has a harmful effect on living organisms or that makes water unsuitable for desired uses. 它是所有化学制品,生物或者在有恶性影响在居住的有机体或使水不合适为期望使用的水质上的物理变化。 [translate] ...
a change of state D. a change (2) The dissolving of salt in water is ___. [ ] A. a physical change B. a chemical change C. hydrogen and oxygen D. breaking up (3) The change of the three states of water is ___. [ ] A. a chemical...
and covered with temp and crispus the ruler and cultural industry and customer maintena and dammit this means and dark in the dark and david built there and david over there and death threats and decorative style and deep mixing and departing from ph and destabilization and dies and dignity and...
百度试题 结果1 题目What is the difference between a chemical reaction and a physical change?相关知识点: 试题来源: 解析 Chemical changes produce new substances,not a physical change 反馈 收藏
Physical Change: Properties like size, shape, state (solid, liquid or gas), temperature, pressure etc., are physical properties. Those changes in which only physical properties of a substance changes are called physical changes. For example, lightening o
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 formed. A ch...
awherever the singer goes,all the young people want to meet him or her. 无论哪里歌手去,所有青年人想要遇见他或她。[translate] aThe term metabolism,meaning literally "change",is usedto refer to all the chemical and energy transformations that occur in the body. 期限新陈代谢,逐字地意味“变动...
aIn the event of a change in the chemical composition of the part, the approval and codification process described in the chapter 8.1 is reinitialised. 在零件的化学成分的上一个变化情形下,在本章和编纂法典过程描述的认同8.1是reinitialised。[translate]...