Anything that involves burning will usually result in a chemical change. Rusting of iron is also a form of chemical change because the steel has reacted with something that made it rust that way. Photosynthesis is also a form of chemical change because this process ensures that oxygen will be released and that food will be created specifically for the plant.
Physical change is straightforward. The item may change its size or its shape, but the property will still be the same. For example, the cutting of paper is a form of physical change because the article will remain as paper but will change its size as it will be in smaller pieces.
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