Answer:1. **Cutting an apple:** This is a **physical change**. You're only changing the apple's shape and size, not its chemical composition. The apple remains apple; it's just in smaller pieces.2. **Baking a cookie:** This is a **chemical change**. The heat causes the ingredients (flour, sugar, eggs, etc.) to undergo chemical reactions, forming new compounds that give the cookie its texture, flavor, and color. You can't easily reverse the process to get back the original ingredients.