百度试题 结果1 题目A chemical change always involves a change in the ___ of matter. A. state B. properties C. quantity D. location 相关知识点: 试题来源: 解析 B。化学变化总是涉及物质性质的变化。反馈 收藏
百度试题 结果1 题目Chemical changes often involve a change in ___. A. color B. size C. shape D. weight 相关知识点: 试题来源: 解析 A。化学变化通常会涉及颜色的变化,而大小、形状和重量一般在物理变化中可能改变更多。反馈 收藏
c. an ice cube melting in a drink, a change of s Choose a chemical substance, and give an example of a chemical change that might take place to the substance. Consider the burning of gasoline and the evaporation of gasoline. Which process represents a chemical change and which...
Izquierdo, MerceSolsona, N. What is conserved in a chemical change? Opinions of secondary school pupils. in Proceedings of the Third International Seminar on Misconceptions and Educational Strategies in Science and Mathematics. 1993. Ithaca, New York: Cornell University....
Free Essay: Chemical change is when one substance touches another substance a reaction which is not able to be reversed back to the original state. One way...
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”。
8. In a chemical change, there is always a new__(物题)oetnod. 相关知识点: 试题来源: 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】substance:物质,是可数名词,前面有a,所以用单数形式。
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 change is not a chemical change if it doesn’t form a new substance...
Answer to: A change that involves the breaking and forming of bonds is called a: a) reactant change. b) chemical change. c) physical change. d)...
a physical change B. a chemical change C. 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 chem...