If a catalyst is added to a chemical reaction, which of the following is most likely to occur? A. The activation energy will increase. B. The reaction time will be prolonged. C. The reaction rate will remain the same. D. The reaction rate will increase. ...
apeople come from 正在翻译,请等待...[translate] aMenneking 开始[translate] aa catalyst is a substance that increases the rate of a chemical reaction without itself being used up 催化剂是增加一个化学反应的率,不用用完的本身的物质[translate]...
The term 'catalyst' is used to describe a substance that ___ in a chemical reaction. A. increases the rate B. decreases the rate C. changes the products D. is consumed completely 相关知识点: 试题来源: 解析 A。催化剂(catalyst)的作用是提高化学反应的速率,而自身在反应前后质量和化学性质不...
In a chemical reaction, we need to find a catalyst. Which of the following is often used as a catalyst? A. Platinum B. Gold C. Silver D. Copper 相关知识点: 试题来源: 解析 A。解析:Gold(黄金)、Silver(白银)、Copper(铜)虽然都是金属,但它们在一般情况下不作为常见的催化剂。Platinum(铂)...
Adding a catalyst can ___ the rate of a chemical reaction. A. raise B. lower C. double D. affect 相关知识点: 试题来源: 解析 D。本题考查词汇及对催化剂作用的理解。raise 通常用于“提升,提高(数量、水平等)”。lower 表示“降低”,催化剂不是单纯地提高或降低反应速率。double 意思是“加倍”...
19 A catalyst increases the rate of a chemical reaction by (1)(1)providing an alternate reaction pathway(2)providing the required heat of reaction(3) increasing the potential energy of the products(4) increasing the activation energy of the reaction 相关知识点: 试题来源: 解析 (1) 反馈...
A substance that takes part in a chemical reaction is called a ___. A. reagent B. product C. catalyst D. solvent 相关知识点: 试题来源: 解析 A。参与化学反应的物质叫试剂,“reagent”是试剂,“product”是产物,“catalyst”是催化剂,“solvent”是溶剂。反馈 收藏...
Energy is added to break bonds, and energy is released when bonds form. What is bond energy? Bond energy is the amount of energy that will break a bond between two atoms Describe two functions of a catalyst in a chemical reactions When a catalyst is present, less energy is needed and th...
Give an example that which catalyst is useful. The Collision Theory: The collision theory is the theory that best explains how various factors affect the rate of a chemical reaction. Generally, the factors affect the physics of the reacting particles which have to collide...
The chemical experiment involved the use of a catalyst.Which statement is true about a catalyst? A. It slows down the reaction. B. It increases the amount of product. C. It does not change the reaction. D. It speeds up the reaction. ...