| 单词 | reactant |
| 释义 | reactant (once / 147742 pages) n A reactant is a substance that changes in a chemical reaction. Vinegar and baking soda are reactants — when you mix them together, they bubble up and make really good lava for a model volcano. Reactants usually hang around the chemistry lab, but the concept isn't difficult if you think about the word react. When people react, they do something such as laugh at a joke or cry at sad news. In chemistry, reactants are part of something happening too: if two chemicals bond when mixed together, or if one dissolves, they are reactants. Any kind of chemical reaction involves reactants. WORD FAMILYreact: overreact, reactant, reacted, reacting, reaction, reactive, reacts+/overreact: overreacted, overreacting, overreaction, overreacts/overreaction: overreactions/reaction: reactionary, reactionism, reactions/reactionary: reactionaries, reactionarily/reactionism: reactionist/reactive: reactively, reactivity, unreactive USAGE EXAMPLESTheir internal bonds weaken after prolonged exposure to heat and collisions with reactant molecules, and their ligands start disintegrating. Nature(Sep 05, 2016) I: The order of a reaction refers to the influence of changes in reactant concentration on the rate of reaction. US News(Mar 17, 2015) ‘The amount of reactant present in the fiber is miniscule, and molecular transport and reaction processes are quite different,’ he says. Scientific American(Jul 09, 2014) n a chemical substance that is present at the start of a chemical reaction Hyper chemical, chemical substance material produced by or used in a reaction involving changes in atoms or molecules |
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