Burning of a matchstick.
physical change. You know that it is a physical change because it can be reversed. An example of a chemical change would be cooking an egg. Because you cannot reverse the process.
physical change physical change
An example of physical change is ice melting in to water.
A physical change only. Its still ice. Even if it melts to water, its still a physical change.Crushing something would result in a physical change.
Melting! A physical change would be to change something from Solid <--> Liquid <--> Gas
An example would be the flame causing the wax to melt.
Evaporation of water is a physical change.
Condensation is a physical change.
Vaporization is a physical change.
Weight is not an example of a physical change, but rather a physical property. A physical change involves altering the form or appearance of a substance without changing its chemical composition. Changing the weight of an object would involve chemical reactions or interactions, thus falling outside the definition of a physical change.
Sawdust is not a change. Making solid wood into sawdust by sawing it, would be a physical change.
No. That is a physical change.