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Is green leaves turn to yellow a chemical change?
Yes, the process of green leaves turning yellow is a chemical change. This change occurs due to chemical reactions within the leaf that break down chlorophyll (green pigment) and other compounds, resulting in the appearance of a yellow color.
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.
Is it a physical or chemical change when bleach turns hair yellow?
It is a chemical change. The bleach reacts with the pigments in the hair, causing a chemical reaction that breaks down the natural color and can result in a yellowish tint.
When paper turns yellow brown upon exposure to sunlight what type of change has taken place a chemical or physical change?
A chemical change has taken place. The exposure to sunlight causes the paper to undergo a chemical reaction, breaking down the molecules in the paper and causing the color change to occur.
When paper turns yellow after a few weeks is it a chemical change or a physical?
Physical (I'm pretty sure). If there is no change in the formula/chemical makeup/etc. then the change is purely physical. If the newspaper ceased to be a newspaper and became something else, then it would be chemical.
Is a leaf changing colors a chemical or physical change?
Leaves change colour because the green pigment (chlorophyll) is degraded, then other pigments like anthocyanins (red or purple) and carotenoids (yellow) are exposed. So the change is more chemical than physical. Leaves going brown are also caused by chemical changes, but it also means the leaf cells are dead or dying.
Is green leaves turn to yellow a chemical change?
Yes, the process of green leaves turning yellow is a chemical change. This change occurs due to chemical reactions within the leaf that break down chlorophyll (green pigment) and other compounds, resulting in the appearance of a yellow color.
Is a salt forming a chemical change or physical change?
It is a chemical change because the sodium(Na) is a liquid that forms with a yellow gas, chlorine(Cl), which changes the physical state to a dickmuncher solid, but ultimately they reacted with each other chemically to form salt (NaCl). It does change the physical state, but it is more of a chemical reaction.
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.
Why Heating zinc oxide is a physical change Why?
It is a physical change. I goes from white, to yellow, back to white.
Is it a physical or chemical change when bleach turns hair yellow?
It is a chemical change. The bleach reacts with the pigments in the hair, causing a chemical reaction that breaks down the natural color and can result in a yellowish tint.
When paper turns yellow brown upon exposure to sunlight what type of change has taken place a chemical or physical change?
A chemical change has taken place. The exposure to sunlight causes the paper to undergo a chemical reaction, breaking down the molecules in the paper and causing the color change to occur.
When paper turns yellow after a few weeks is it a chemical change or a physical?
Physical (I'm pretty sure). If there is no change in the formula/chemical makeup/etc. then the change is purely physical. If the newspaper ceased to be a newspaper and became something else, then it would be chemical.
When two clear and colorless aqueous salt solutionsare mixed together the solution turns cloudy and yellow Does this represent a chemical or a physical change?
This represents a chemical change, as the formation of a cloudy and yellow solution suggests the formation of a new substance with different properties from the original solutions.
When a banana is yellow is that a physical or chemical property?
The yellow color of a banana is a physical property, as it can be observed without changing the chemical composition of the banana.
Sulfur has a bright yellow color is this physical or cheimical property?
Its colour, its melting point, its boiling point, whether it is magnetic or not, whether it is an electrical conductor or not and its atomic mass are all physical properties.
Is salt forming a physical chance or chemical change?
It is a chemical change because the sodium(Na) is a liquid that forms with a yellow gas, chlorine(Cl), which changes the physical state to a dickmuncher solid, but ultimately they reacted with each other chemically to form salt (NaCl). It does change the physical state, but it is more of a chemical reaction.
