Is the lighting of a bulb a reversible or an irreversible change
reversible
A light bulb is not a change in and of itself but the process by which it gives off light is physical. While an electric current causes a given component of the bulb to glow (it may be the filament of an incandescent bulb or the vapor in a fluorescent one), but that substance does not change its chemical identity.
Yes, evaporation is the changing of matter from a liquid to a gas. You can reverse this process through condensation which is the change from a gas to a liquid.
No.
Reversible: the light goes on, producing illumination; it goes off and it's as dark as it was. Irreversible: light causes a plant to grow which is not immediately reversed when the light is turned off
Is the lighting of a bulb a reversible or an irreversible change
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None. You vill change zee light bulb. Ve haf vays to MAKE you change zee light bulb!
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