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When you see a bright light then flames is it a physical change or chemical change explain how?
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
What else can I help you with?
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
Alternate Wordings for 'What is chemical change and physical change and give its examples?
Explain the difference between chemical change and physical change, and provide examples of each. Define chemical change and physical change, and provide examples to illustrate. Differentiate between chemical change and physical change, and give examples to clarify the distinction.
When sulfur is bright yellow solid is it chemical or physical change?
The transformation of sulfur from a bright yellow solid to a different colored solid would be considered a physical change because no new substances are formed. The change in color is due to the rearrangement of sulfur atoms, not a chemical reaction.
When the banana, berries, water, and hot dog are blended, does a physical or chemical change occur?
both physical and chemical change occur
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 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.
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
Explain why burning butter is a chemical change but melting is not?
Melting: change of phase, a physical phenomenon without change of the composition. Burning: a reaction of oxydation, a change of composition - a chemical change.
Does food go thought a chemical physical or both change during digestion Explain?
Both
Is stone breaking a physical change?
Breaking of stone is a physical or chemical change? Explain.
