Question

match each of the following as a physical or chemical change. answers will be used more than once. milk turns sour melted butter solidifies wood is burned food is digested coffee beans are ground ice melts paper can burn, decompose and release carbon dioxide gas

Explanation:

Physical change: No new substance formed (e.g., state, shape change). Chemical change: New substance formed (e.g., decomposition, burning).

Answer:

milk turns sour: Chemical change
butter solidifies: Physical change
wood is burned: Chemical change
food is digested: Chemical change
coffee beans are ground: Physical change
ice melts: Physical change
calcium carbonate decomposes and releases dioxide gas: Chemical change