Categorize each change as physical or chemical.

:: Apple slices turning brown in the air

:: Baking muffin batter to make muffins

:: Chopping tomatoes

:: Combining dry ingredients $($flour$,$ salt, sugar, baking powder$)$ when making muffins

:: Cooking tomatoes to make tomato sauce

: Peeling apples

:: Shredding paper

Physical Change

Chemical Change