A student cuts some fabric into two pieces. Is this change physical or chemical?
It is a chemical change because the size changes.
It is a chemical change because the size changes.
It is a physical change because there is no reaction.
It is a physical change because there is no reaction.
It is a physical change because the process is reversible.
It is a physical change because the process is reversible.
It is a chemical change because there is no phase change.
None of the provided options accurately describe whether cutting fabric into two pieces represents a physical or chemical change.
Cutting the fabric is a physical change because it does not involve a chemical reaction. The size change is an indication of physical transformation, not necessarily chemical alteration. Additionally, the process of cutting fabric is reversible, further indicating its physical nature. The absence of a phase change is irrelevant to determining whether the change is physical or chemical.
The correct answer is: It is a physical change because there is no reaction.
The correct answer is: It is a physical change because there is no reaction.
To determine whether a change is physical or chemical, we need to understand the differences between the two.
Physical changes involve changes in the physical properties of a substance, such as its shape, size, or state of matter (solid, liquid, gas), without altering its chemical composition. However, chemical changes involve the formation of new substances with different chemical compositions.
In the case of cutting fabric into two pieces, there is no chemical reaction or formation of new substances. Only the physical properties of the fabric are changed, specifically its size and shape. The process of cutting can also be reversed by stitching the pieces back together. Hence, it is considered a physical change.