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Is it true that production of light is evidence that a physical change may have occurred?
Yes, the production of light can indicate that a physical change has occurred, but it's more commonly associated with chemical changes. In a physical change, light may be emitted due to phenomena like friction or the movement of particles. However, in chemical reactions, light often results from energy release as chemical bonds are formed or broken. Thus, while light production can be a sign of a change, it is not definitive for identifying whether that change is physical or chemical.
What is the chemical change called in a lit candle?
The chemical change in a lit candle is called combustion. Combustion is a rapid chemical reaction between oxygen in the air and the fuel (in this case, the wax in the candle) that produces heat, light, and carbon dioxide.
Is production of heat or light a physical change?
The release of energy can have physical or chemical causes.
Is burning a candle a chemical change or a physical change give reason?
Burning a candle is a chemical change. During the burning process, the wax of the candle reacts with oxygen in the air to produce carbon dioxide, water vapor, and heat. This chemical reaction results in the formation of new substances with different properties from the original wax, indicating a chemical change rather than a physical change.
Is production of light chemical or physical property?
The production of light can be a physical or chemical property. Physical properties would include phenomena like luminescence or fluorescence, where certain materials are capable of emitting light without undergoing chemical reactions. Chemical properties would include processes like combustion or bioluminescence, where the production of light is a result of chemical reactions taking place.
Is the production of light a chemical or physical change?
physical
How is a burning candle both physical and chemical changes?
A burning candle involves both physical and chemical changes. The physical change is the melting of the wax, while the chemical change is the wax combining with oxygen in the air to produce heat, light, carbon dioxide, and water vapor.
Is burning a candle undergoing a physical change?
Yes, burning a candle is undergoing a chemical change because the wax is being oxidized by the flame, resulting in the production of heat, light, and new substances like carbon dioxide and water vapor.
Is production of heat or light a physical or chemical change?
Its a chemical change hottie
What is the physical and chemical change that occurs when a birthday candle is lit on a cake?
There are multiple physical changes and chemical changes that occur when a candle burns. One physical change is that the candle melts back into liquid wax. One chemical change is flame burning on the wick.
Is it true that production of light is evidence that a physical change may have occurred?
Yes, the production of light can indicate that a physical change has occurred, but it's more commonly associated with chemical changes. In a physical change, light may be emitted due to phenomena like friction or the movement of particles. However, in chemical reactions, light often results from energy release as chemical bonds are formed or broken. Thus, while light production can be a sign of a change, it is not definitive for identifying whether that change is physical or chemical.
Is production of light by a lamp physicalnor chemicaln change?
The production of light by a lamp is a physical change. It involves the conversion of electrical energy into light energy through a process that does not alter the chemical composition of the materials involved.
Mass does not change during a chemical change how about for a physical change?
Physical changes are like cutting paper. The mass does not change. Chemical changes do not change total mass either. If you put a candle in a sealed container so that you may measure the total mass of the candle and the air before burning, then light the candle electrically but keep everything sealed, the total mass after burning will still be the same. But if you measure only the candle, then its mass has changed. So the mass of one single 'ingredient' will change during a chemical change.
How has the light bulb change?
it was a candle and now its a big light
Is lighting a candle a physical or a chemical change?
It is chemica changel because it produces gas and the smoke it produce is one of the evidence that it is really a chemical change, also you can't put it back to its beginning state.
Is production of heat or light physical or chemical change?
i think it would be physical because it is still energy.
Is Giving off light a physical change?
Giving off light is considered a chemical change, not a physical change. This is because the emission of light usually involves chemical reactions at the atomic or molecular level that result in the production and release of photons.
