A physical change can be reversed, for it does not change what the object is made of. The glass, even when broken, is still glass. It can be put back into its original state (possibly through melting) because it never changed what it was made out of.
Breaking, grinding, cracking are all examples of a physical change. The nature of the substance has not changed, just the size of the pieces has changed.
True.
Yes, as it's still glass. There is no chemical/molecular change.
Breaking, grinding, cracking are all examples of a physical change. The nature of the substance has not changed, just the size of the pieces has changed.
This is a physical change. There is nothing that changes the components of either the diamond or the glass when the diamond is used to scratch glass.
Breaking glass is a physical change, as it does not change the chemical composition of the material.
A glass breaking is a physical change because the chemical composition of the glass does not change.
No breaking glass is not a chemical reaction, which is what i think you mean. Breaking the glass does not alter the chemical makeup or properties of the glass. Instead breaking glass is a physical reaction because it does alter the size of the glass and its appearance
It is a physical change. The resulting fragments of glass are still glass and of the same composition.
Breaking glass is a physical change because there is NO chemical difference ... from before to after.
Purely physical.
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.
Breaking a glass jar changes the physical form of the glass without changing its chemical composition.
Physical change because the molecules have not changed to form a new substance.
Glass breaking is a physical change because it does not involve a change in the chemical makeup of the glass. The bonds between the glass molecules are simply being rearranged when it breaks, but the composition of the glass remains the same.
Breaking, grinding, cracking are all examples of a physical change. The nature of the substance has not changed, just the size of the pieces has changed.
No, this is a physical reaction because no matter has exchanged etc. Instead, the lattice structure of the glass has been broken- which is simply physical. (Not even that sophisticated a physical change, as glass has no lattice structure.)