Help with chemical/physical changes examples please?

Physical--> cutting, grating, breaking, chopping, grinding Chemical--> pH changes (addition of vinegar), protein is denatured when heated, sugar melts and undergoes dehydration, yeast feeds off sugars in breads and releases carbon dioxide causing the bread to rise, combustion (burning of anything)

For the best answers, search on this site https://shorturl.im/eg3QT a chemical change is when a substance reacts in one of the following ways: 1)gives off light 2)new odor 3)sound 4)forms a new substance 5)produces heat a Physical change happes when it the substance changes from it's original form of matter to a new, different sate(like for example: water, a liquid, freezing to ice, a solid)