The substance that speeds up a chemical reaction without being consumed itself is a ___. A. product B. reactant C. catalyst D. solvent 相关知识点: 试题来源: 解析 C。catalyst 是催化剂,能加快化学反应速度但自身不被消耗;product 是产物;reactant 是反应物;solvent 是溶剂。所以选催化剂。反馈...
The substance that speeds up a chemical reaction without being consumed in the reaction is called a ___. A. catalyst B. reactant C. product D. solvent 相关知识点: 试题来源: 解析 A。解析:“catalyst”是催化剂,能加快化学反应速率而自身在反应中不被消耗;“reactant”是反应物;“product...
The substance that speeds up a chemical reaction without being consumed in the reaction is called a ___. A. catalyst B. reactant C. product D. solute 相关知识点: 试题来源: 解析 A。catalyst 是催化剂,能加快化学反应速率但自身在反应前后不被消耗;reactant 是反应物;product 是产物;solute...
The substance that speeds up a chemical reaction without being consumed itself is called: A. Reactant B. Product C. Catalyst D. Substrate 相关知识点: 试题来源: 解析 C。加快化学反应速率但自身不被消耗的物质称为催化剂(Catalyst)。“Reactant”是反应物;“Product”是产物;“Substrate”在酶促反应...
The substance that can speed up a chemical reaction without being consumed is called ___. A. reactant B. product C. catalyst D. solvent 相关知识点: 试题来源: 解析 C。解析:能加快化学反应速率而自身在反应前后不发生变化的物质叫做催化剂(catalyst)。反应物是(reactant),产物是(product),溶剂是(...
What is the name of the substance that changes the rate of a chemical reaction without being consumed? A. Reactant B. Product C. Catalyst D. Solute 相关知识点: 试题来源: 解析 C。这里考查“catalyst”(催化剂)的概念,它能改变反应速率但自身不被消耗。选项 A“reactant”是反应物;选项 B“...
In a chemical reaction, a substance that participates in the reaction and is consumed is called a ___. A. product B. reactant C. catalyst D. solvent 相关知识点: 试题来源: 解析 B。reactant 是反应物,在化学反应中参与反应并被消耗;product 是产物;catalyst 是催化剂;solvent 是溶剂。根据题...
When a substance undergoes a chemical reaction and the mass of the reactants is greater than the mass of the products, what can be concluded? A. Some matter was destroyed. B. Some matter was created. C. Some matter was converted into energy. D. Some matter was lost as gas. 相关知识...
If there are 8 grams of substance H, how many grams of substance G are there? A. 4 grams B. 8 grams C. 16 grams D. 32 grams 相关知识点: 试题来源: 解析 C。G 的量是 H 的两倍,H 有 8 克,所以 G 有 16 克。反馈 收藏
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]