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What chemical turns yellow when sprayed with bleach?
Phenolphthalein is a chemical that turns yellow when sprayed with bleach. It changes color in response to changes in pH levels, and in the presence of bleach its color shifts from colorless to yellow.
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 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.
What chemical turns yellow when sprayed with bleach?
Phenolphthalein is a chemical that turns yellow when sprayed with bleach. It changes color in response to changes in pH levels, and in the presence of bleach its color shifts from colorless to yellow.
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.
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.
Is leaves going yellow a physical or chemical change?
Very complex chemical changes cause the yellowing of leaves. Primarily, the green chlorophyll breaks down leaving some of the yellow colours which were hidden, e.g. xanthophyll. Other chemical changes produce new coloured substances such as red anthocyanins.
Is mixing red and yellow paint to make orange a chemical or physical change?
Mixing red and yellow paint to make orange is a physical change because no new substances are formed. The individual red and yellow paint molecules are simply being physically combined to create a new color.
