What energy does stretching a rubber band have?
elastic potential energy
You input potential (stored) energy into the rubber band system when you stretched the rubber band back. Because it is an elastic system, this kind of potential energy is specifically called elastic potential energy.
Is stretching an endothermic or exothermic process is it spontaneous or not spontaneous?
You will feel a slight warming effect. The warming effect (an exothermic process) due to stretching means that D H < 0, and since stretching is non-spontaneous (that is, D G>0 and -D G<0), TD S must be negative.
Does stretching a rubber band produce heat?
When atoms are warmer, they vibrate faster. When you stretched your rubber band out, you stiffened its chains, causing the molecules to hit one another harder and vibrate faster. This produced more heat.
Is stretching a balloon exothermic?
Stretching is therefore endothermic, taking energy in, and releasing it exothermic, letting the energy out.
What happen when a rubber band is stretched?
It changes shape when extended and returns to its original shape when the applied force is withdrawn. When a rubber band is extended, the force that acts on it is called the elastic force. Elasticity is described as the ability of a substance to stretch and return to its original shape after being stretched.
Is a stretched rubber band kinetic energy?
Kinetic energy is energy in an object because of its motion. For example, a rubber band that is stretched has elastic potential energy, because when released, the rubber band will spring back toward its resting state, transferring the potential energy to kinetic energy in the process.
Is contracting a rubber band spontaneous?
As discussed in Preparing to Investigate, a rubber band contracting is a spontaneous process, meaning ΔG for that process is negative.
How does a rubber band stretch?
This occurs because of the unusual polymer structure of rubber. When the long chains get hotter and vibrate, they actually shorten, causing the material to contract. When the chains cool down, they relax and stretch out, causing the material to expand.
When we stretch a rubber band do we observe that?
We know that potential energy is also a form of stored energy so while stretching a rubber band a potential energy will be stored resulting in an increase of it. Hence we can say that potential energy is increased when the rubber band is stretched. So, the correct answer is “Option C”.
What happens when rubber is stretched?
A rubber band is an elastic material in nature. When stretched, it changes its shape and when the applied force is removed, it regains its original shape. That is why a rubber band changes its shape even though it is a solid. Also, if excessive force is applied then the rubber band would break.
Why does a rubber band resist stretching?
Rubber is made of molecules shaped like strands of spaghetti. If you stretch a rubber band, you pull those spaghetti-shaped molecules into a more or less straight line. But the molecules are still moving around. That motion causes the molecules to resist straightening.
Does stretching an elastic band further store up more energy?
The more a rubber band stretches, the more energy is stores. When you let go, the rubber band releases the stored energy. As a result, if the rubber band is stretched further, it releases more energy and thus goes further.