- Baking is when a human makes food by adding heat
- A cake is a kind of food
- Hence, baking cake is adding heat to the cake

- Baking cake is adding heat to the cake
- Adding heat to an object causes chemical reactions
- Hence, baking a cake can cause a chemical reaction to the cake

Hence, baking a cake can cause a chemical reaction to the cake
Question: Which of the following represents a chemical reaction?
Context: - Adding heat to an object causes chemical reactions 
- Baking is when a human makes food by adding heat 
- A cake is a kind of food