Difference between reagent + reactant (Dutch: reagens + reactant)

Please note: The pages in the ‘Terms’ category contain my own research while translating. I basically use this wiki as a notepad and memory aid, so a lot of the content will be quickly written and potentially far from perfect. If you find anything glaringly incorrect, feel free to drop me a line @ michael@beijer.uk!

Reagent (Dutch: reagens)

nl: reagens/re­a­gen­tia
"che­mi­sche stof of op­los­sing van che­mi­sche stof­fen die dient om een bep. che­mi­sche re­ac­tie te­weeg te bren­gen als een an­de­re che­mi­sche stof aan­we­zig is, en om de­ze stof aan te to­nen"

en: reagent/reagents
"A substance or mixture for use in chemical analysis or other reactions:"

Reactant (Dutch: reactant)

nl: reactant/re­ac­tan­ten  
"che­misch re­ac­tie­ve stof"

en: reactant/reactants
"A substance that takes part in and undergoes change during a reaction."

Notes

REAGENT:

• test substance that is added to a system in order to bring about a reaction or to see whether a reaction occurs

• In a chemical reaction, a reagent binds to something and thus triggers a reaction. It is not consumed during this. However, a reactant is consumed.

REACTANT:

• substance that takes part in and undergoes change during a reaction