Physical change because the molecules have not changed to form a new substance.
Not really. A broken glass is still glass; no chemical change has occurred. But it is physically different, so it is better to say a physical change happened.
A broken mirror is a physical change, not a chemical change. This is because the process of breaking a mirror alters its shape and structure but does not change its chemical composition. The glass remains glass, regardless of its fragmented state. Thus, the change is 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.
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.)
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
No, it is a physical change as the identity of the substance remains the same. Broken glass is still glass.
Not really. A broken glass is still glass; no chemical change has occurred. But it is physically different, so it is better to say a physical change happened.
A broken mirror is a physical change, not a chemical change. This is because the process of breaking a mirror alters its shape and structure but does not change its chemical composition. The glass remains glass, regardless of its fragmented state. Thus, the change is 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.
Purely physical.
If it is resting on the floor, there is no change at all.
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.)
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
When glass breaks, it is considered a physical change rather than a chemical change. This is because the composition of the glass remains the same; only its shape and structure change. In a physical change, the material's properties may alter, but no new substances are formed, which is the case with broken glass.
By whom has the glass been broken?
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.
Besides for rearranging the glass pieces, one is not actually changing the chemical formula of the glass. Much like grinding NaCl, the crystals get smaller but the chemical remains the same.