elasticity
When force is applied to rubber, the elastic tension energy disrupts bonds, and changes the structure, as if heat is applied. Heat is actually absorbed by the rubber, as its elasticity increases, while undergoing the "stretch" deformation. When force is no longer applied, the streched rubber collapses, releasing heat, as the structure reverses form, to its starting molecular conformation.
Stretching a rubber band is a physical change.
Yes - it's still a rubber band.
Yes - it's still a rubber band.
Rubber is elastic. After streching is stopped, it will regain its shape.
Sahara
Elastic potential energy.
All rubber duckies are special...
physical change that is elasticity
Yes
Yes - it's still a rubber band.
Rubber gym mats are suited for tumbling and stretching but very few are ninja proof. You could find yourself stretching your muscles and falling victim to an unsuspecting ninja attack.