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What is a Catalyst mean in chemistry?
In Biology, a catalyst is a substance which speeds up a chemical reaction, without being changed themselves. Biological catalysts are found in living organisms.
What material is used to decrease the rate of a reaction?
An "inhibitor" (aka negative catalyst) slows or blocks a chemical reaction. In some cases this can also be called a deterrent or a retardant. The term anticatalyst(anti-catalyst) refers to blocking the action of a catalyst.
What term describes a substance rhat lowers the amount of energy needed to start a chemical reaction?
This substance is called a catalyst.
What is the speed at which a reaction occurs called?
The chemical term is reaction rate.
How is the term catalyst related to the term enzymes?
Enzymes are biological catalysts that speed up chemical reactions in living organisms. Catalysts, in general, are substances that increase the rate of a chemical reaction without being consumed in the process. Enzymes are a specific type of catalysts that are essential for various biological processes.
What term is given to a substance which speeds up a reaction and is unchanged after the reaction?
Catalyst- lowers the activation energy of a reaction but is not consumed.
What is another term for a substance that speeds a reaction but is not part of the end product?
A Catalyst
What is different between catalyst and hardener?
The term catalyst is much more general than the term hardener, since hardening is only one of endless numbers of processes which can be catalysed. A hardener, therefore, would be a specific type of catalyst.
Which substance can affect the rate of a chemical reaction without itself being changed or used up during the reaction?
The answer you're looking for is a "catalyst". Unless you are in Chemistry 12, you don't need to know that reaction equations with more than 3 molecules on the reactants' side consist of several steps, in which intermediates (things that are produced/used and involved in the reaction, but are reused or produced before the end) like catalysts come into the reaction. Catalysts influence reaction rate, but do not show up in the final equation of an overall reaction. They are sometimes listed over the "arrow" in the equation. Inhibitors slow reactions, and are the opposite of catalysts in that way. Source - Chem 12 Student under Jim Nattrass
What term describe a substance that lowers the amount of energy needed to start a chemical reaction?
Catalyst
What term describes a substance that lowers the energy needed to start a chemical reaction?
This substance is a catalyst.
What is a chemical substance that helps control reactions?
A catalyst is generic term used to influence rates of reaction. The catalyst lowers the activation energy required to start the reaction. In biology, catalysts are called enzymes.
