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What is an example of a chemical change that produces light and heat?
reaction of na [sodium] with water or air
Is a glow stick that produces light a chemical change?
Yes, a glow stick produces light by means of a chemical change.
What chemical change produces light and heat?
steel wool burns in oxegen and produces heat and light
Fireworks exploding in the sky and giving off light are an example of a(n)?
chemical change
What Chemical change that produces light and heat?
steel wool burns in oxegen and produces heat and light
Is a firefly emitting light chemical or physical change?
That would be a chemical change because the firefly produces a bio-luminescent chemical. This chemical produces light which you see when the fire fly lights up!
Breaking a light stick chemical change?
When you break a light stick, it is a physical change, not a chemical change. The breaking of the light stick only changes its physical state but does not alter its chemical composition. This is because the chemical reactions that produce light in a light stick have already occurred when the stick was activated, and breaking it does not initiate any new chemical reactions.
Examples of chemical energy to light energy?
Chemical energy is converted to light energy in a chemical reaction called chemiluminescence. An example is the reaction between a chemiluminescent substance like luminol and hydrogen peroxide, which produces light without the need for heat or electricity. Another example is the combustion of magnesium in air, which releases energy in the form of light.
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 matchstick an example of chemical energy to light energy?
No, a matchstick is an example of chemical energy being converted to thermal energy and light energy during combustion. The chemical energy stored in the matchstick is released when ignited, resulting in the production of heat and light.
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.
