PROYECTO DE FERIA DE CIENCIAS EN INGLES COLA Y PLÁSTICO DE LECHE

Glue and milk plastic

Students identify milk components and some substances that may affect its state.

Casein is a complex that with the rest of free proteins are found as a colloidal suspension making miscalls. Casein is also known as a polymer or molecules chain

Milk glue 250 ml of milk 2 jars 80 ml of white vinegar A strainer or Coffee filter 0.6 grams of bicarbonate Milk Plastic 1 litre of milk A medium pot 60 ml of white vinegar A heat resistant spoon A filter

Milk glue Pour the milk in a jar Add vinegar to the milk and stir Using a strainer or coffee filter, remove the lumps (butterfat) Add bicarbonate to the butterfat and stir well When bicarbonate and vinegar react bubbles appear. If glue is too dense add a little of water. Create an artistic project. Keep the rest of the glue in the fridge during two days. Milk plastic Pour the milk in a medium pot and heat at medium temperature. Add vinegar to the hot milk and mix. Butterfat will separate and makes a big, white dough. Separate the liquid from the solid substance and knead until roughless. Mold making figures.