Choose the answer that represents a chemical change. *Dissolving salt in waterTearing up a receiptBurning your old homeworkMixing food coloring in water
Question
Solution
Analyzing the Options
- Dissolving salt in water: This is a physical change, as the salt can be recovered by evaporating the water.
- Tearing up a receipt: This is also a physical change; the paper is still there, just in smaller pieces.
- Burning your old homework: This is a chemical change, as burning involves a reaction that converts the homework (paper) into ash, smoke, and gases.
- Mixing food coloring in water: This is a physical change, as the dye can be separated from the water again.
Final Answer
The option that represents a chemical change is Burning your old homework.
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