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When you see a bright light then flames is it a physical change or chemical change explain how?
Wiki User
∙ 13y ago
it is a chemical change because the substance is irreversible
mikias.a
(Alternative):
"Fire" itself is not a chemical change, it is merely incandescent gas. The visible flame is generated from multiple sources: black body radiation of fuel, ash and soot and also by photon emission due to de-excitation of gas molecules. These processes which create the light that we see as fire are not in themselves chemical changes.
Fire, however, needs energy in order to be created. These energy is usually produced by a chemical change, such as a redox reaction. It could also be produced by a nuclear change, such as fusion in the sun's core.
-Taedrin
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoIt is an example of a chemical change in that fire is an oxidation reaction. It is also an example of a physical change: if the bright flash and then flames were not the intended result of the experiment as approved by your teacher, the student responsible will be displaced from the science room to the office to explain to the principal why he tried to blow up the science lab.
Wiki User
∙ 15y agoAnything that involves fire or burning is a chemical change.
Wiki User
∙ 6y agoThis chemically produced light from the lower abdomen may be yellow, green, or pale red, with wavelengths from 510 to 670 nanometers.
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Is twisting a wire chemical or physical change explain?
It is physical. The wire changes shape, but it is still made of the same materials.
In a candle explain both changes using the big idea of energy?
When a candle is burnt a physical AND chemical change takes place. Its a physical change when the wax is being melted because the chemical structure has not change, meaning it cannot be a chemical change. Its also a chemical change because you are burning the string. When you burn something the chemical structure DOES change, meaning it is a chemical change.
Is stapling an envelope a physical change or chemical?
A physical change
Is painting a door a physical or chemical change?
Physical change of the paint, not the door.
Light beam dimmer is chemical or physical change?
A beam of light becoming dimmer is a physical change since it is reversible. Recharging its source will make the light beam bright again.
Is twisting a wire chemical or physical change explain?
It is physical. The wire changes shape, but it is still made of the same materials.
If leaves of a maple tree turn bright red as winter approaches is a chemical or physical change?
physical change because chemical changes usually cant be seen
Is stone breaking a physical change?
Breaking of stone is a physical or chemical change? Explain.
Explain what a chemical change is?
a chemical change is a change which brings about a change in the chemical properties of a substance which cannot be reversed through physical means like heating or cooling.
When the banana, berries, water, and hot dog are blended, does a physical or chemical change occur?
both physical and chemical change occur
Is Cleaning a painted surface with acid a chemical or physical change?
Chemical broooooooooooooooo niga
Is it a chemical or physical change when heat is put over sugar?
its physical change.to explain,the conversion of solid to liquid is physical
Is the melting of an ice cube considered a physical change or chemical change Explain your reasoning?
The melting of an ice cube is considered both a physical change and a chemical change simply because a chemical change is something burning, so if the ice cube is cold and hot at the same time, it's both a physical change and a chemical change.
Is peeling an apple a physical or chemical change?
it is a chemical change
In a candle explain both changes using the big idea of energy?
When a candle is burnt a physical AND chemical change takes place. Its a physical change when the wax is being melted because the chemical structure has not change, meaning it cannot be a chemical change. Its also a chemical change because you are burning the string. When you burn something the chemical structure DOES change, meaning it is a chemical change.
Is crushing charcoal into powder a physical or chemical change?
Chemical I think
Is melting ice a chemical or physical change explain?
It is a physical change because when you have a chemical change it changes the properties and makes it into a new thing, and it can't be reversed. Physical changes are usually just changes of states (solid, liquid, gas) and a physical change can be reversed.
