Lab 1.3
Changing in Matter
Lesson 1.3
Is it Chemical or Physical?
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Materials
Procedure
Analyze and Conclude
1. Describe the properties of the ingredients that you used to make the glue. __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________
2. Describe the properties of the glue that you made.
__________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________
3. Is making glue an example of a chemical change or a physical change? Explain how you know.
__________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________
4. Did a change in energy occur with this change in matter? Explain.
__________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________
- 40 mL skim milk
- 3 plastic cups
- plastic spoon
- 2 pieces of paper
- 10 mL vinegar
- coffee filter
- baking soda
Procedure
- Pour the skim milk into a plastic cup. Add the vinegar and stir to mix.
- Pour the mixture through a coffee filter into another cup.
- Use a plastic spoon to scrape off the material that collects on the filter. Be careful not to tear the filter. Place this material in a third cup. If this material is too thick, add a small amount of water and stir.
- Add a pea-sized amount of baking soda to the material in the third cup. Stir to mix.
- You have made a natural glue. Try gluing two pieces of paper together to see how well it works.
Analyze and Conclude
1. Describe the properties of the ingredients that you used to make the glue. __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________
2. Describe the properties of the glue that you made.
__________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________
3. Is making glue an example of a chemical change or a physical change? Explain how you know.
__________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________
4. Did a change in energy occur with this change in matter? Explain.
__________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________
