A chemical reaction.
Chemical Reaction - Vance Austin Neely
True
No. That is a chemical change. In a physical change, their is no change in chemical composition forming one or more new substances.
Nope - it's a physical change. The chemical composition of the pencil is still the same !
It is a physical change. The resulting fragments of glass are still glass and of the same composition.
It is a chemical change. It keeps its same chemical composition and is in a reversible state. You can remelt it and once again, make glass.
Breaking a mirror does not cause a change in the chemical properties of the mirror itself. The act of breaking the mirror may result in physical changes, such as the mirror's fragments having sharp edges, but the chemical composition of the mirror remains the same. Mirrors are typically made of a layer of reflective material, like silver or aluminum, which is deposited on the glass surface, and breaking the mirror does not alter this composition.
Breaking glass is a physical change, as it does not change the chemical composition of the material.
No. That is a chemical change. In a physical change, their is no change in chemical composition forming one or more new substances.
No it is not. The chemical composition is H2O before and after freezing.
chemical weathering
Nope - it's a physical change. The chemical composition of the pencil is still the same !
It is a physical change because the chemical composition remain unchanged.
No. After breaking the mirror, the chemical properties of the remaining pieces are the same as the intact mirror. This is a physical change, not a chemical change.
Original answer is INCORRECT. Clouds forming in the sky is a physical change because a chemical change requires a change in the chemical composition of a material and the H2O, no matter a solid liquid or gas, is always H20.
A glass breaking is a physical change because the chemical composition of the glass does not change.
It is a physical change. The resulting fragments of glass are still glass and of the same composition.
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.
It is a chemical change. It keeps its same chemical composition and is in a reversible state. You can remelt it and once again, make glass.