answersLogoWhite

0


Best Answer

This substance is called a catalyst.

User Avatar

Wiki User

8y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

7y ago

This substance is a catalyst.

This answer is:
User Avatar

User Avatar

Wiki User

15y ago

catalyst

This answer is:
User Avatar

User Avatar

Wiki User

11y ago

catalyst

This answer is:
User Avatar

User Avatar

Wiki User

8y ago

catalyst

This answer is:
User Avatar

User Avatar

Wiki User

8y ago

Catalyst

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What term describes a substance rhat lowers the amount of energy needed to start a chemical reaction?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Continue Learning about Natural Sciences

What describes the energy of activation?

Activation energy is the least amount of energy needed to start a chemical reaction. It is used to activate atoms or molecules in order for them to begin a chemical reaction.


How does activation energy determine if a reaction will release or absorb energy?

Activation energy is really just the minimum amount of energy needed for a chemical reaction to occur. Without it, the energy will stay the same and the substance cannot undergo a chemical change. The thing to look at, I think, is the product of the reaction. For example, in a graph, two substances could have the same activation energy, but after the reaction the amount of energy in substance 1 could be extremely low and the amount of energy in substance 2 could be higher than the activation energy. In substance 1, evidence of an EXOTHERMIC reaction has occurred because the amount of energy in the original substance was lost indicating that it has released energy. Whereas in substance 2, when the amount of energy was higher than the activation energy, it is evident that an ENDOTHERMIC reaction has occurred because the amount of energy after the reaction is higher than it was before the reaction. This shows that substance 2 absorbedenergy making it endothermic. hope this helps!


The amount of energy needed to cause a chemical reaction to occur is the?

The amount of energy necessary to cause a chemical reaction to occur is called activation energy.


What determines the amount of chemical energy a substance has?

The amount of chemical energy a substance has is determined by the types and arrangement of atoms and molecules in that substance. The energy is stored within the chemical bonds between these atoms and molecules. The strength of these bonds and the potential energy stored in them determine the amount of chemical energy.


What does a balanced chemical equation convey to a chemist?

A balanced equation indicates the chemical formulas for the substances involved in the reaction and the number of molecules or moles of each substance in the reaction. This enables a chemist to calculate the amount of each reactant needed to produce a desired quantity of product.

Related questions

What evidence in chemical reaction in mole?

Mole is the the unit for amount of substance in SI.


What is the measured amount of a productobtained from the chemical reaction?

This is usually referred to as the ACTUAL YIELD of that substance.


What term describes a substance that lowers the amount of energy needed to start a chemical reactions?

Catalyst


What term describe a substance that lowers the amount of energy needed to start a chemical reaction?

Catalyst


What describes the energy of activation?

Activation energy is the least amount of energy needed to start a chemical reaction. It is used to activate atoms or molecules in order for them to begin a chemical reaction.


Does chemical potential changes as reaction proceeds?

yes,as gibbs free energy depends on temp. ,its value for a fixed amount of a substance change,so chemical potential changes with reaction.


Substance with a definite shape and volume?

Items like H2O and CoC2 have a definite chemical composition, and require exact amount of particles to forma reaction. However; particles which are soluble in water do not have a definite chemical reaction.


Define limiting reactant?

In a chemical reaction the limitting reactant is also know as limiting reagent.it is the substance which is totally consumed when the chemical reaction is complete.the reacton can not proceed without it.


How does activation energy determine if a reaction will release or absorb energy?

Activation energy is really just the minimum amount of energy needed for a chemical reaction to occur. Without it, the energy will stay the same and the substance cannot undergo a chemical change. The thing to look at, I think, is the product of the reaction. For example, in a graph, two substances could have the same activation energy, but after the reaction the amount of energy in substance 1 could be extremely low and the amount of energy in substance 2 could be higher than the activation energy. In substance 1, evidence of an EXOTHERMIC reaction has occurred because the amount of energy in the original substance was lost indicating that it has released energy. Whereas in substance 2, when the amount of energy was higher than the activation energy, it is evident that an ENDOTHERMIC reaction has occurred because the amount of energy after the reaction is higher than it was before the reaction. This shows that substance 2 absorbedenergy making it endothermic. hope this helps!


What information do the coefficients of a of a balanced equation give about the reactants?

These coefficients show the number of molecules (and the amount of substance) involved in the chemical reaction.


What does the amount of energy affect during a chemical reaction?

A chemical reaction need an activation energy to start.


A mole is an SI base unit that describes the?

A mole is a unit that describes an amount of a substance that has 1 unit of Avogadro's number in it. Avogadro's number is 6.022 E23.