- Fire is a kind of chemical reaction
- Fire causes burning
- Therefore, burning something with fire is a kind of chemical reaction

- Burning something with fire is a kind of chemical reaction
- A lit candle is a source of fire
- Hence, burning something with a lit candle is a kind of chemical reaction

- Burning something with a lit candle is a kind of chemical reaction
- Magnesium is a kind of substance
- So, burning magnesium with a lit candle is a kind of chemical reaction

- Burning magnesium with a lit candle is a kind of chemical reaction
- Chemical reactions cause chemical change
- Hence, burning magnesium with a lit candle will lead to a chemical change

So, burning magnesium with a lit candle will lead to a chemical change
Question
Magnesium strips are long, thin strips that are gray and shiny. Which action will lead to a chemical change of magnesium strips?

Context
- Magnesium is a kind of substance 
- A lit candle is a source of fire 
- Chemical reactions cause chemical change 
- Fire is a kind of chemical reaction 
- Fire causes burning