- Wood burns
- Wood chips are made of wood
- Therefore, wood chips burn

- Wood chips burn
- Fire causes burning
- Therefore, fire causes wood chips to burn

- Fire causes wood chips to burn
- Fire is a kind of chemical reaction
- Therefore, fire burning wood chips is an example of chemical reaction

- Fire burning wood chips is an example of chemical reaction
- Chemical reactions cause chemical change
- So, fire burning wood chips causes chemical change to the wood chips

So, fire burning wood chips causes chemical change to the wood chips
Question
Which action illustrates a chemical change?

Context
- Wood burns 
- Wood chips are made of wood 
- Fire is a kind of chemical reaction 
- Chemical reactions cause chemical change 
- Fire causes burning