Identify the following statements as being TRUE or FALSE. Circle your answer. a. Covalent bonds result when two atoms share their electrons. True/False b. Molecular formulas give the exact number of each element in a compound True/False In a solu...
1. Definition of Solvent: A solvent is defined as the component of a solution that is present in the greatest amount. 2. Components of a Solution: In a solution, there are typically two components: the solute and the solvent. The solute is the substance that is dissolved, while the sol...
The substance that is present in the largest amount in a solution is called the ___. A. solute B. solvent C. precipitate D. reactant 相关知识点: 试题来源: 解析 B。解析:“solvent”是溶剂,在溶液中含量最多的物质是溶剂;“solute”是溶质;“precipitate”是沉淀物;“reactant”是反应物。
Which of the following is the correct term for a substance that undergoes a chemical change in a reaction? A. Reactant B. Product C. Catalyst D. Solvent 相关知识点: 试题来源: 解析 A。本题考查化学术语。“Reactant”指反应物,是在化学反应中发生变化的物质。“Product”是产物,是化学反应生成...
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 changes color in the presence of an acid or a base is called___. A. indicator B. reactor C. catalyst D. solvent 相关知识点: 试题来源: 解析 A。解析:在酸或碱存在时改变颜色的物质叫指示剂。选项 B 反应器不符合;选项 C 催化剂不改变颜色;选项 D 溶剂也不是变色的物质...
英语翻译The solubility of a substance at a given temperature is defined as the concentration of the dissolved solute that is in equilibrium with the solvent.相关知识点: 试题来源: 解析 在一定温度下,某物质在溶剂中达到饱和状态时的浓度,叫做这种物质在这种溶剂中的溶解度.(既然是定义defined as ,我...
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(...
3.a substance that dissolves another to form a solution:Water is a solvent for sugar. 4.something that solves or explains. [1620–30; < Latinsolvent-,s. ofsolvēns,present participle ofsolvereto loosen. Seesolve,-ent] sol′vent•ly,adv. ...
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