Bleach
Two common examples are photosynthesis and cellular respiration.
no, it happens naturally
In a chemical change, a new substance is produced. For example, if something is burnt, it is no longer what it originally was and is, therefore, a chemical change. A physical change is a change in appearance: shape, quantity, and form of matter (solid, liquid, gas).
One common chemical change that occurs naturally in plants is photosynthesis. During photosynthesis, plants use sunlight, carbon dioxide, and water to produce glucose and oxygen. This process is essential for the plant's growth and provides oxygen for other organisms.
change into new substances
Yes, because the preparation involve chemical processes.
Yes, it is true; this technology involve chemical processes.
No. Iron is naturally magnetic.
Brain
Fossils are the results of the degradation of the organic material - chemical processes.
Simply chemical reactions. Unless you want to know something more specific?
Color changing in leaves is a chemical change. It involves the breakdown of chlorophyll and the production of other pigments due to chemical processes triggered by factors like temperature and daylight changes. This results in the visible color change in the leaves.