Views: 7 Author: Site Editor Publish Time: 2021-06-23 Origin: Site
All kinds of delicious food and materials in the kitchen also contain magical science. What kind of knowledge about kitchen science do you know? Today, Alpha science classroom will use milk, vinegar, baking soda, and other materials found in the kitchen to issue a lesson on How to Make Non-Toxic Glue From Milk for children. Through this simple chemistry experiment for kids, to unlock the magic of children’s chemical experiments, to help children learn the magical knowledge of kitchen science.
Alpha science classroom: How to use milk to make the materials needed for non-toxic glue.
1/4 cup hot water
1 tbsp vinegar
2 tbsp powdered dry milk
1/2 tsp baking soda
Alpha Science Classroom: How to use Non Toxic Glue From Milk
Step 1: First, the children mix 1/4 cup of hot tap water with 2 tablespoons of powdered milk. Stir until dissolved.
Step 2: Children add 1 tablespoon of vinegar to the mixture. The milk will begin to separate into solid curds and water whey. Continue to stir until the milk is completely separated.
Step 3: The children pour the curd and whey into the coffee filter placed above the cup. Lift the filter slowly to drain the whey. Keep the curd in the filter.
Step 4: The children squeeze the filter to remove as much liquid as possible from the curd. Discard the whey (ie pour it into the drain) and put the curd back in the cup.
Use a spoon to divide the curd into small pieces.
Step 5: Children add 1 teaspoon of hot water and 1/8 to 1/4 teaspoon of baking soda to the chopped curd. There may be some bubbles (carbon dioxide gas produced by the reaction of baking soda and vinegar).
Step 6: Children have to wait until the liquid is thoroughly mixed until the glue becomes smooth and more fluid. If the mixture is too thick, add a little more water. If the glue is too clumpy, add more baking soda.
Step 7: The consistency of the finished gum for children can vary from viscous liquid to viscous paste, depending on how much water is added, how much curd is present, and how much baking soda is added.
Well, the children's milk glue is complete, it uses glue-like any school paste. have fun!
When not in use, cover your glue cup with plastic wrap. Over time, its consistency will become smoother and clearer.
The glue that has not been refrigerated will "go bad" after 24 to 48 hours. Discard the glue when it produces a spoiled milk smell.
Secrets of Alpha Science Classroom Success
Tell the children quietly that the separation of curd and whey is best when the milk is hot or hot. This is why milk powder is recommended in this project.
If the separation effect is not good, please heat the milk or add a little more vinegar. If it still doesn't work, please start over with warm water.
Clean dry glue by loosening/dissolving it in warm water and wiping dry glue. The glue will wash away clothes and surfaces.
Alpha science classroom: The scientific principle of Non-Toxic Glue From Milk
The alpha science classroom tells the children that mixing milk and vinegar (weak acetic acid) will cause a chemical reaction to form a polymer called casein. Casein is essentially a natural plastic. The casein molecule is long and flexible, making it ideal for forming flexible bonds between two surfaces. Casein curds can be molded and dried to form hard objects sometimes called milk pearls.
When a small amount of baking soda is added to the shredded curd, the baking soda (alkali) and the remaining vinegar (acid) participate in the acid-base chemical reaction to generate carbon dioxide, water, and sodium acetate. The carbon dioxide bubbles escape, and the sodium acetate solution combines with the casein curd to form a viscous glue. The thickness of the glue depends on the amount of water present, so it can be a vicious paste (minimal water) or thin glue (more water).
Lovely children, are you happy with these non-toxic milk glues? Go to make your own beautiful handicrafts by using your imagination and milk glue! Alpha science classroom hopes that kid’s science experiment activities from How to Make Non-Toxic Glue From Milk’s could not only provide children with magical knowledge of chemistry experiments for kids but also bring joy to children to help them understand the science mystery around them, which inspire them to become the most powerful chemical "enchanter".