its a chemical change
its a chemical change
Chemical.
Two common examples are photosynthesis and cellular respiration.
its a chemical change
Respiration is a chemical process that involves converting oxygen and glucose into energy, carbon dioxide, and water. It is a metabolic change that provides the necessary energy for cellular functions in organisms.
Through cellular respiration
A physical change
because they become oxidized and reduced when glucose is broken down in photosynthesis and cellular respiration.
Physical change of the paint, not the door.
it is a chemical change
An acid is a chemical compound, not a physical or chemical change.
Crushing charcoal into powder is a physical change, as it alters the size and shape of the charcoal without changing its chemical composition.