I think it is a physical change because if it's a chemical change it would be a whole new substance but it's only a change of color.
Re: No it can't be a physical change because it's irreversible. There is a chemical reaction occurring in the leaves, so it should be a chemical change.
A physical change. It's just the chlorophyl dying and the actual pigments showing.
The leaves changing color is a chemical change because there is less chlorophyll in the leave's veins
a chemical change
a chemical change
It is a chemical change.
Chemical Change.
a chemical change
It is a physical change. Preexisting pigments are moved to and from the surface of the skin, but the pigments themselves do not change.
Phenolphthalein itself is a chemical. It changing color is a chemical change.
it is a chemicAL CHANGE AND THATS ALL I CAN TELL YOU
An apple turning brown is a CHEMICAL change.
The following are indicators of chemical changes: ... For example, changing the color of a metal does not change its physical properties.
It is a Physical change because it is changing the color of your skin not any chemicals in your body.
Chemical Changes the substance and physical really dont change it as much examples of chemical: burning wood, physical: painting it Physical is basically changing color, looks,
Physical - because you're changing the appearance - not the composition of the wall.