A substance that speeds up a chemical reaction without being consumed is called_____. A. reactant B. product C. catalyst D. solute 相关知识点: 试题来源: 解析 C。解析:加快化学反应但自身不被消耗的物质叫催化剂。选项 A 反应物会被消耗;选项 B 产物是反应生成的;选项 D 溶质不是起这个作...
Chemical Reactions:There are many different chemical reactions that occur in the natural world on a daily basis. A chemical reaction is different from a physical reaction.Answer and Explanation: A product is a substance that forms as a result of a chemical reaction. In a chemical reaction,...
Combustion reaction is a chemical reaction that occurs when a substance reacts with oxygen to produce heat and light. Combustion reactions are very important in our daily lives. For example, when we burn wood or coal, a combustion reaction takes place. The conditions for a combustion reaction ...
a对...起到重要作用 To….Plays the vital role[translate] aa substance that increases the rate of a chemical reaction without being permanently changed consumed is called 增加一个化学反应的率,不用永久被改变被消耗的物质叫[translate]
Disclosed is a method for carrying out a chemical reaction in a reactor, at least one substance is present in a container that is closed in a gas-tight manner, is introduced into the reactor in said container and is released by breaking open the container. The container is designed such ...
What is a substance that speeds up a chemical reaction without being used in the reaction? What is hypersensitivity? Give examples. Which allergic reaction is characterized by the appearance of wheals? What is the main ground substance (or ECM) component...
A chemical reaction is a process that involves rearrangement of the ionic or molecular structure of a substance. The reaction caused by the mento dissolving in the diet coke can be classified as a physical change due to the process of nucleation. Nucleation is the the initial process that ...
How does new substance form in a chemical reaction? 03:02 Define combination reaction 02:30 What is the use of slaked lime? 00:53 Write chemical formula for marble 00:46 What do we get on the combustion of natural gas? 00:53 Write formula for ferrous sulphate 01:01 What is formed of...
One or more new substances are formed in a chemical change. View Solution A substance is transformed after a chemical change. View Solution Select the correct answer from the choice in bracket to complete each sentence. A change in which matter undergoes a change but the total mass of substanc...
A catalyst is a substance that can alter the rate of a chemical reaction. Catalysts can be successfully used to increase the rate of a chemical reaction. Also, catalysts are subjective in nature, i.e., a catalyst works specifically on certain reactions only. A catalyst is not consumed in ...