Smoking a cigarette involves a combination of physical and chemical changes. The act of lighting the cigarette and burning the tobacco involves a chemical change, producing new substances. The process of inhaling and exhaling the smoke is a physical change as it involves a change in state (from solid to gas) without altering the chemical composition of the smoke.
It is a chemical change, even though the cigarette is getting physically smaller. When heat is added and you inhale the chemicals, the cigarette burns and you blow out smoke which in itself is a chemical reaction that cannot be reversed. Therefore, it's purely chemical. Remember that chemical changes cannot be reversed and physical changes can. Freezing water and then melting it is an example of a physical change. The example you mentioned is a chemical change. Hope this helps! - D.F
it is a chemical change
Crushing charcoal into powder is a physical change, as it alters the size and shape of the charcoal without changing its chemical composition.
Chemical broooooooooooooooo niga
Physical - there are no chemicals involved
Smoking cigarette is a chemical process.
Smoking is a chemical process.
It is a chemical change, even though the cigarette is getting physically smaller. When heat is added and you inhale the chemicals, the cigarette burns and you blow out smoke which in itself is a chemical reaction that cannot be reversed. Therefore, it's purely chemical. Remember that chemical changes cannot be reversed and physical changes can. Freezing water and then melting it is an example of a physical change. The example you mentioned is a chemical change. Hope this helps! - D.F
Smoking is a chemical process.
Sawdust is not a change. Making solid wood into sawdust by sawing it, would be a physical change.
A physical change
Yes
Physical change of the paint, not the door.
The process of dry ice sublimating, or turning directly from a solid to a gas, is a physical change. No new substances are formed, just a change in the physical state of the dry ice from solid to gas.
it is a chemical change
An acid is a chemical compound, not a physical or chemical change.
Crushing charcoal into powder is a physical change, as it alters the size and shape of the charcoal without changing its chemical composition.