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You can do this:

Materials Needed:

1. Skim milk, 125 mL 2. Beaker, 250 mL

3. Vinegar (acetic acid), 25 mL 4. heat source

5. Sodium bicarbonate (baking soda), 1g 6. Funnel and filter paper

7. stirring rod 8. water, 30 mL

9. Graduated cylinder, 125 mL

Strategy:

1. Place 125 mL of skim milk in a 250 mL beaker.

2. Add 25 mL of vinegar, which is an acidic solution.

3. Gently heat milk and stir constantly until small lumps begin to form.

4. Remove beaker from heat and continue to stir until no more lumps form.

5. Allow lumps to settle.

6. Filter the solid (curds) from the liquid (whey) using funnel.

7. Gently press the filter paper around the curds to squeeze out the excess

liquid through the filter paper.

8. Return the solid to the beaker

9. Add 30 mL of water to the solid and stir

10. Add 1/2 tsp. of baking soda to neutralize vinegar, bubbles should appear.

Add a little more baking soda until no more bubbles appear.

11. The substance in the beaker is glue. Test the adhesive properties,

including waterproof property.

I am doing this for a science experiment this year and it worked

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