Because the change in the bonds of the plastic while cutting it can never be the same again once cut. You could melt it back, but it would still be different.
Cutting a piece of wood is a physical change because the chemical composition of the wood remains the same before and after cutting. The change is only in the physical appearance and shape of the wood.
cutting a paper is a irreversiable physical change in other words non recurable change.
Cutting a circle out of a piece of paper is a physical change because the paper's chemical composition remains the same before and after the cutting. The change is only in the physical appearance and shape of the paper.
Cutting a piece of copper in half is a physical change because it only alters the physical appearance of the copper without changing its chemical composition.
Of itself a metal can not be "shortened". However, a metal OBJECT such as a piece of metal wire can be shortened by cutting a piece off. This would be a physical change.
Stretching a piece of plastic until it breaks is a physical change because the bonds between the plastic molecules are being rearranged and broken without changing the chemical composition of the plastic itself.
I think dhatt the answer is a physical change because if you just bent it then surley you can unbent it and still have a piece of metal.
Cutting paper is a physical change because, it involves changing something without changing its chemical structure
No, making plastic containers is a chemical change as it involves the conversion of raw materials (such as polymers) into a new substance (plastic containers) through a chemical reaction. Physical changes only alter the appearance or physical state of a substance without changing its chemical composition.
Physical change
this is a physical change
A physical change is a change in matter where its identity remains the same. Examples include changes in state (solid to liquid), size (cutting a piece of paper), or shape (bending a metal rod).