No, boiling water is NOT a chemical reaction, but it is a physical change. When water, H2 O, is in liquid form, it can be heated to a boil. Boiling...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer...
When we heat water, it starts to boil. This is a ___ change. A. chemical B. physical C. natural D. artificial 相关知识点: 试题来源: 解析 B。“chemical”指化学变化;“physical”指物理变化,水加热沸腾是物理变化;“natural”意为“自然的”;“artificial”意为“人工的”。所以选 B。 反馈 ...
{Blank} is an example of physical change while {blank} is an example of a chemical change. a. Evaporating rubbing alcohol, boiling nitrogen b. Burning wood, dissolving salt in water c. Boiling water, Which of the fo...
百度试题 结果1 题目2. Changing water into $$ H _ { 2 } $$ and $$ O _ { 2 } $$ is a chemical change. 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
BROSNAN, T., When is a chemical change not a chemical change? Education in Chem- istry, 36 (2), 56, 1999.Brosnan, T. (1999). When is a chemical change not a chemical change? Education in Chemistry, 36(2), 56.Brosnan, T. When is a chemical change not a chemical change, Educ....
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...
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...
Is water boiling a chemical reaction? Are chemical changes reversible? What is a combustion reaction? Is freeze drying a physical change or a chemical change? Is evaporation a chemical reaction? Can energy be released during a chemical reaction?
___a chemical change a new kind of smaterial is formed.( )A.In the case ofB. In caseC. In case ofD. In event of 相关知识点: 试题来源: 解析 考查介词短语.in the case of:至于…,在……的情况下,就…来说,就……而言;in case 万一,以防;in case of防备; 假如;in event of万一...
A number of samples of the endoergic method area unit chemical change, evaporating liquids, melting ice, dry ice, alkanes cracking, thermal decomposition, sal ammoniac in water and far a lot of. Exothermic Reactions The chemical reaction is that the opposite of associate chemi...