I believe you're looking for photosynthesis.
photosynthesis
You think probable to photosynthesis.
Photosynthesis
3
yes
chikala
Chlorophyll
Mechanical energy (Blast waves) and thermal energy (Heat)
Yes, the production of light can indicate that a physical change has occurred, but it's more commonly associated with chemical changes. In a physical change, light may be emitted due to phenomena like friction or the movement of particles. However, in chemical reactions, light often results from energy release as chemical bonds are formed or broken. Thus, while light production can be a sign of a change, it is not definitive for identifying whether that change is physical or chemical.
Yes, a flashlight changes stored chemical energy into light energy when the battery powers the light bulb. The chemical energy in the battery is converted into electrical energy, which then powers the light bulb's filament to produce light.
No.
When you break a light stick, it is a physical change, not a chemical change. The breaking of the light stick only changes its physical state but does not alter its chemical composition. This is because the chemical reactions that produce light in a light stick have already occurred when the stick was activated, and breaking it does not initiate any new chemical reactions.