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Is cutting up a pear a reversible change or a chemical reaction and why?
You can't glue together a divided pear,if you want it to be valuable but it is not a chemical change..why?-The reason is that a chemical change is followed by entirely new product and what you have done is to seperate the pear molecules,it is still a pear!,and it is a physical change,and you are free to ask more question,because I understand that a pear has life..
Cutting up a pear chemical reaction or reversible?
It's chemical because you can't get the pear back to a whole.
Is cutting up a pear a chemical reaction?
No, cutting up a pear is a physical change, not a chemical reaction. Chemical reactions involve the breaking and forming of chemical bonds to create new substances, while cutting a pear only changes its physical appearance.
Why is cutting up a pear irreversible?
irreversible
How do you prevent pear molding?
Try cutting them up and freezing them
Is cutting up a pear a chemical?
No it isn't, however, the oxidation of the organic material that occurs after the Pear has been cut, is a chemical reaction, it is called Redox.
Is blowing up a balloon an irreversible change?
Blowing up a balloon is a reversible change because the process can be reversed by letting the air out of the balloon. The balloon returns to its original state before it was blown up.
Is a light bulb a reversible change?
No, a light bulb is not a reversible change. When the filament inside the light bulb heats up and emits light, it undergoes a chemical change and cannot be easily reversed.
What is cutting up an old rag a physical change or chemical change?
It is not a chemical change because after cutting the chemical composition remain unchanged.
Why is condensing an example of a reversible change?
Because all you need to do is heat the condensate up and it will evaporate again.
Is perming hair a chemical change or a physical change?
I think it is a physical change Improvement: It's actually a series of chemical changes. As different chemicals are added they break and make bonds within the protein make-up of the hair.
Is making crisps from cooking oil and potatoes a reversible change or chemical reaction?
Most cooking processes are chemical reactions. Generally, the reactions are non reversible and once cooked, food cannot be returned to an uncooked state. So, frying potatoes causes a non reversible chemical reaction. The question is not as precise as it might be. Changes can be physical or chemical. They can also be reversible or non reversible but it is important to note that many chemical changes are reversible just as many physical changes are reversible.
