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This is because the stretching does not change the chemical composition of the rubber band.
Rubber bands are made of cross-linked polymers, long chain molecules connected to each other, that initially exist in a coiled state. Stretching forces these chains to lengthen, and aligns them in the direction of the applied stress, without forcing them to undergo any chemical change.
Think about a whole mass of tangled yarn. When you pull the left and right sides of it, it will get longer and more of the yarn will be pointing from left to right, but the yarn will be the same yarn that initially was in the tangled state. Because it is the "same yarn" in the before and after states, it is a physical change.
What else can I help you with?
Is size of an object a physical property a physical change a chemical property or a chemical change?
i am pretty sure it is a physical property! :)
What is an example of a physical change that can be reversed?
A reversible change is when something can turn back into its original shape for example when ice is melted it turns into a liquid but then you can freeze it into a solid again do the change is reversible because it can change back into its original starter which is the ice in this case. But if you make a cake it is not reversible because all of the mixture has mixed together and it turns into one object this is called a chemical change. Also a reversible change is a physical change! Hope this helped ;)
What is the effect of balance forces on an object that is not moving?
A group of balanced forces adds vectorially to zero, so has no effect on any object, whether it's moving or not moving.
Is a glass breaking a chemical change?
A chemical change is when the molecules of an object / solution are changed. A physical change is when the object / solution is altered without molecular change. Breaking glass is a physical change.
Is crushing an aluminum can a physical irreversible change?
Yes. Physical change is when you change the appearance but not the actual object. Crushing an aluminum can is a physical change because you have only changed its shape, but not its chemical composition.
What is after a physical change?
a physical change is when the object changes in a way but it is still that same object Example: A piece of bread if u toast (burn) it it will still be bread
Which is not an example of an acceleration?
An object moving at a constant speed in a straight line is not an example of acceleration. Acceleration is the rate of change of velocity of an object with respect to time.
Example of physical change in an object?
A physical change is a change which affects only the physical properties of an object, not its chemical properties. Examples include breaking glass, smoothing a rock with a sander, and freezing water. As long as a new substance is not created in a process, the process is a physical change.
Is the size of an object a physical property or physical change?
An object's size is a physical property of the object.
Is weight an example of a physical change?
Weight is not an example of a physical change, but rather a physical property. A physical change involves altering the form or appearance of a substance without changing its chemical composition. Changing the weight of an object would involve chemical reactions or interactions, thus falling outside the definition of a physical change.
What determines the change in direction of an object after it collides with another moving object?
the force or other moving object
If you change the mass of a moving object you change its?
density
Can an object be accelerated if it is moving with constant speed if yes explain giving example?
Yes, it can. Perhaps the simplest example is when an object moves at constant speed, in a circle. In this case, the speed doesn't change; the velocity does.
How do you when an object is moving?
Change of position relative to another object
Why is change of color a physical change?
Because a physical change just alters the appearance of an object, where as a chemical change alters the texture or state of an object.
What is the definition of tomake incapable of moving?
To make incapable of moving means to render unable to change position or location. This could be due to physical, mental, or external factors that restrict or immobilize a person or object from moving.
Is length of an object a physical or chemical change?
The length of an object changing is a physical change, as it does not involve a change in the substance's chemical composition.
