0
The reason why turning on a light bulb is a physical change is because there is a process of electrical energy being converted into light and heat. You still have the light bulb intact and no new substance is formed.
Turning on a light bulb is not a physical or chemical change. It is a conversion of electrical energy into light and heat energy via the filament in the bulb, which emits light when electricity passes through it.
There is no chemical or atomic change to the filament (incandescent) or gas (fluorescent). Once the light bulb is turned off, the filament or gas will return to the normal state and temperature.
No. It is a physical change, as to put it in layman's terms you're just heating the filament. Chemical composition is not altered. Note that the light emitted is NOT from an energy exchange as seen in a chemical reaction
In a light bulb light is produced either by heating a tungsten filament to incandescence or by exciting the electrons of Mercury vapor. Either way, the chemical compositions of the components of the light bulb remain the same. They would have to change in some part of the process for this to be considered a chemical change.
In incandescent light bulb you heat thefilament to very high temperature. So that it becomes red hot and emits light. To prevent the filament from getting oxidized, you have have an inert gas filled in the bulb. Inert gas means 'noble'gas like Helium, Neon, Argon, Krypton. These gases do not take part in chemical reactions. So this is purely a physical change. Only about 5 % energy is converted to light and rest being emitted as heat radiation. You have designed the length and thickness in such a way to to give different amount of 'light'. Also the 'life' of bulb is designed. You can make a filament thicker and longer to increase the 'life' of bulb. But this is not done in order that next bulb should be sold and industry must go on.
This is a physical Change When the electrons go through the filament, the filament is going though no chemical change, only the physical change of temperature
It is a physical process.
Glowing (heating) of the bulb's filament due to the flow of current through it, is a physical change. The current supplied by the battery is due to chemical change within the battery.
physical change
Add your answer:
Earn +20 pts
Is turning a light bulb on a chemical change?
No.
Is turning glow sticks on a chemical or physical change?
Turning on a glow stick is a chemical change because the chemicals inside the stick react to produce light. This reaction cannot be easily reversed, unlike physical changes where the substance retains its original properties.
Is a light bulb a chemical or physical change?
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.
Is purple color a physical and chemical change?
No, the color purple is a physical property of an object that results from the absorption and reflection of certain wavelengths of light. It is not the result of a physical or chemical change, but rather the interaction of light with the object's molecules.
When a firecracker explodes giving off light and heat and breaking the wrapper into many pieces is that a physical change chemical change or both?
This is both a physical and chemical change. The explosion involves the release of energy (heat and light), which is a chemical change due to the breaking of chemical bonds. The breaking of the wrapper into many pieces is a physical change as it does not involve any change in the chemical composition of the materials.
Is turning a light bulb on a chemical change?
No.
Is a light bulb on a chemical or physical change?
Physical change
Is switching a light bulb on a physical or chemical change?
Physical change
Is the production of light a chemical or physical change?
physical
Is turning glow sticks on a chemical or physical change?
Turning on a glow stick is a chemical change because the chemicals inside the stick react to produce light. This reaction cannot be easily reversed, unlike physical changes where the substance retains its original properties.
Is a light bulb a chemical or physical change?
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.
Is emission of light a chemical or physical change?
Most of the time the emission of light is a physical change but there are some chemical reactions which emit light as a byproduct of the reaction.
Is production of heat or light a physical or chemical change?
Its a chemical change hottie
Is combustion a physical change?
Combustion is a chemical change, not a physical change. It involves a chemical reaction where a substance reacts with oxygen to produce heat, light, and new chemical compounds.
Is heat light and change in odor indicate a physical change?
Heat, light, and change in odor can indicate a physical change depending on the context. For example, melting ice into water is a physical change because it does not alter the chemical composition of the substance. However, if a substance undergoes a chemical reaction that results in heat, light, and change in odor, then it would be considered a chemical change.
Is the generation of light by an electric lamp a chemical or physical change?
This is a physical change. When the electrons go through the filament (or gas), there is no chemical change, only the physical change of temperature. The electricity to power the light may be generated chemically (fossil fuels or batteries) or from a hydroelectric plant. The light from "glow sticks" is an example of light generated by chemical changes.
Is light a physical property ora chemical change?
It is a physical change at least that is what I've been told
