That would be a catalyst.
Catalysts speed up reactions without being used up in the reaction.
That would be a catalyst.
A substance that speeds the changing of food into a usable form* is called an enzyme. More generally, in any chemical context, a substance that speeds a reaction without itself being changed is called a catalyst._______________________________________*This changing of food into a usable form is called "digestion".
A catalyst is a substance that speeds up a given chemical reaction by lowering its activation energy without itself being used up.
A catalyst speeds up the rate of a chemical reaction.
biological catalysts known as enzymes are molecules that lower the amount of energy required to kick start a reaction and are NOT used up or changed in the reaction.
A substance that speeds up a chemical reaction without undergoing a permanent change itself is a catalyst.
A catalyst
That would be a catalyst.
A catalyst.
A Catalyst.From wikipedia: "Catalysis is the process in which the rate of a chemical reaction is increased by means of a chemical substance known as a catalyst. Unlike other reagents that participate in the chemical reaction, a catalyst is not consumed by the reaction itself. The catalyst may participate in multiple chemical transformations."http://en.wikipedia.org/wiki/Catalyst
A substance that speeds the changing of food into a usable form* is called an enzyme. More generally, in any chemical context, a substance that speeds a reaction without itself being changed is called a catalyst._______________________________________*This changing of food into a usable form is called "digestion".
A catalyst is a substance that speeds up a given chemical reaction by lowering its activation energy without itself being used up.
A catalyst speeds up the rate of a chemical reaction.
an outside agent that effects the speed or occurance of a reaction is called a catalyst.A catalyst just speeds up a reaction but doesn't take part in the reaction itself.
In Biology, a catalyst is a substance which speeds up a chemical reaction, without being changed themselves. Biological catalysts are found in living organisms.
biological catalysts known as enzymes are molecules that lower the amount of energy required to kick start a reaction and are NOT used up or changed in the reaction.
A catalyst is a chemical that facilitates a chemical reaction between two other chemicals without being consumed in the reaction itself.