It's called Chlorophyll, it makes the leaf green and helps with photosynthesis.
Because the leaf is not burning.
It is a chemical change, a degradation of the compounds from the leaf.
Chemical. It has to do with the closing of the part that connects the leaf to the tree and the lack of nutrients causes the leaf to turn colours.
chemical
Chemical
The term "red leaf" typically refers to the color of a leaf, which can indicate a change in pigmentation due to various factors, such as environmental conditions or seasonal changes. This process often involves the breakdown of chlorophyll and the production of anthocyanins, which is a chemical change. Therefore, the transformation of a green leaf to a red leaf can be considered a chemical change due to the alteration of its chemical composition.
Agent Orange was the toxic, leaf-killing chemical sprayed over Vietnam.
Crushing a leaf is a physical change, not a chemical change because the chemical composition of the leaf remains the same before and after crushing. However, if the crushing process causes the leaf to release certain chemicals due to breaking of cell walls, then it can result in a chemical change.
The change is leaf color is a chemical change.
oxygen
chlorophyll
chorophyll