answersLogoWhite

0

a physical reaction is non-reversible e.g. when you bake a cake or fry an egg.

a physical reaction is reversible e.g. when you melt ice or chocolate.

i did this in chemistry today, ^-^

(but did you mean a chemical reaction?)

User Avatar

Wiki User

10y ago

What else can I help you with?

Continue Learning about Biology

What is the name of the enzyme that doesn't change during a reaction?

Enzymes are organic molecules that are highly specific catylists for biological chemical reactions. Enzymes are not permanently changed by the reactions that they catalyze, although the may transiently change shape a little during the reaction. At the end of the reaction, the enzyme is the same shape that it was at the beginning.


Is the reaction of iron with oxygen to form iron oxides a physical or chemical change?

Reaction of iron with oxygen to form iron oxide is an example for a chemical change as iron is getting oxidized to its oxide . The process is known as corrosion and the product is commonly known as rust.See the Related Questions to the left for more information about chemical changes, physical changes, and rust itself.iron rusts is a chemical change because you cant cahnge the way it is now.


An endergonic reaction is a reaction in which the change in Gibbs free energy is what?

An endergonic reaction is a reaction in which the change in Gibbs free energy is positive, indicating that the reaction requires an input of energy to proceed. This means that the products of the reaction have more free energy than the reactants.


Do enzymes change shape after a reaction occurs?

While the structure of an enzyme can, and often does, change over the course of a reaction, after a reaction has completed, enzymes are returned to their starting state. It is worth noting that certain cofactors (such as ATP or GTP) may also need to be replaced in order for the reaction to procede again.


Substances that enter a reaction are termed?

A substance which enters into a chemical reaction is called a reactant.In a chemical reaction-also called chemical change- one or more reactants (the initial substances that enter into the reaction) change into one or more products (the final substances that are present at the end of the reaction).

Related Questions

Freezing involves a chemical reaction?

No, freezing involves phase change, which is a physical change. There is no chemical reaction, as the basic chemistry is unchanged it is still the same material in a different physical state.


Is crushing a plastic bottle a physical reaction?

Crushing a plastic bottle is a physical change, not a physical reaction. This is because the plastic's chemical composition remains the same even though its physical form has changed.


Is dissolving a physical or chemical reaction?

a physical reaction for the chemical structure is not changing.


Is a physical change a change that you make something but you can change it back to its normal shape?

yes. a chemical change/reaction is irriversable, whereas a physical change/reaction is reversable.


What reaction of matter will stay the same during a physical change?

The chemical composition of the matter will stay the same during a physical change. Only the physical properties, such as shape, size, or phase, will be altered without affecting the chemical composition of the substance.


Why is a phase change a physical change and NOT a chemical change?

Because no chemical reaction is taking place. It is the same substance, just in a different state of matter.


Is water a chemical reaction or a physical reaction?

Water is not a reaction at all. If you mean to ask if a state change in water is chemical or physical, it is physical.


Is dissolving sugar a chemical reaction or physical reaction?

It is a physical because it didn't change the substance


Is an indicator's reaction in acids and bases a chemical change?

No, an indicator's reaction in acids and bases is a physical change. Indicators change color based on the pH of the solution they are in, but the chemical composition of the indicator remains the same.


What is difference between physical and chemical balance?

The difference is that chemical equilibrium is the equilibrium of products and reactants in a reaction while physical equilibrium is the equilibrium of the physical states of the same substance.


What is made from a chemical reaction?

In a chemical reaction something new is created. A chemical change is inreversible where as a physical change is. In a physical change nothing new is formed.


Is metallic lustre physical or chemical change?

its a physical change it may look different but it is still in the same state as a solid piece of gold