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On- level Chemical or Physical Change Lab Directions: Predict whether each of the following will result in a chemical or physical change. Item Directions Steel Wool Put in plastic bag add vinegar quickly seal bag Mix with water Shape foil like a bowl carefully hold over flame about 2 minutes Mix with baking Soda Mix with a few drops of acid/base indicator Mix with water Shape foil like a bowl carefully hold over flame about 2 minutes Sugar Sugar Vinegar Vinegar Salt Salt Physical or Chemical Change Directions: Use materials given and lab safety to complete the chart below. Item Directions Steel Wool Put in plastic bag add vinegar quickly seal bag Sugar Mix with water Sugar Shape foil like a bowl carefully hold over flame about 2 minutes Mix with baking Soda Vinegar Vinegar Mix with a few drops of acid/base indicator Salt Mix with water Salt Shape foil like a bowl carefully hold over flame about 2 minutes Physical or Chemical Change Physical or Chemical Change Evidence Conclusion: 1. List 3 indications that a physical change has occurred. 2. List 3 indications that a chemical change has occurred. 3. Explain a real world situation of when it would be useful to know the physical properties of a substance. 4. Explain a real world situation of when it would be useful to know the chemical properties of a substance.
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