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reactant

reactant

2 5.9
A chemical that changes during a reaction, for example hydrogen
  • noun
  • /riˈæktənt/
  • Specialized
translation icon : reactante
  • In a chemical reaction, hydrogen and oxygen are both important reactants that combine to form water.
  • reactants and products
  • gaseous reactants
  • concentration of reactants

But you do run into the fact that this is UV reactant stuff.

Examples

  • One possibility is to contain the reactants in plasma, the high-temperature form of matter.

    Academic text (1999)
  • Chemists often analyze how different reactants interact under various temperatures and pressures.

  • I mean those are the reactants and the products.

  • - Yeah, some of your reactants are off.

  • Let me see... the missing reactant must have chlorine...

    Fiction book (1994)
  • The missing reactant can be identified by balancing the equation with respect to all atoms involved.

    Fiction book (1994)
  • Ozone is a reactant that is greatly involved in photochemical processes that can intensify atmospheric pollution.

    Academic text (1993)
  • The solid arrows indicate reactants and products coming in and out of a reaction; the dashed arrows indicate catalysis.

    Academic text (2013)
  • Chemist 3 said, "Your reactants versus your products are going to have some level of potential energy. If the reactants have a higher potential energy and the products have a lower potential energy, there's a release in energy."

    Academic text (2012)
  • For the experiment to succeed, you must carefully measure the amount of each reactant used in the solution.

Synonyms

reagent
vsreactant
  • Specialized
9 7.9

A chemical added to a sample to cause a reaction or to test for a substance

is a substance that participates and undergoes change during reactions
substrate
vsreactant
  • Specialized
3 7.5

A substance that an enzyme acts on during a chemical reaction

is any substance that changes as part of a chemical reaction

How Reactive

explosive
  • Specialized
336 5.5
oxidizer
  • Specialized
3 7.4
reagent
  • Specialized
9 7.9
reactant
  • Specialized
2 5.9
stable
  • Specialized
30 6.6
inert
  • Specialized
1 7.1

Surface Forms

reactant singular
reactants plural

Morphology

reactant = react (transparent) = react + ant

Direct, regular formation: 'react' (to undergo a reaction) + '-ant' meaning 'one/thing that reacts', so the sense is clearly predictable.

Etymology

The word reactant comes from the parts re- 'again' and act 'do', the same root you see in action and actor. So a reactant is a substance that 'acts' and changes during a chemical reaction, acting in response to the reaction, which is why we call it a reactant.