EVERYDAY SCIENCE

Detailed explanation-1: -The glue is formed because the chemical reaction between the milk and vinegar promotes the linkage of many molecules of casein. These links form tangled chains, and these tangled chains are what make glue sticky!

Detailed explanation-2: -Just be careful not to overheat them or they will start to burn. Melting hot glue sticks in the microwave can be dangerous if you’re not careful. Always test a small piece of your adhesive to make sure it’s safe before using the microwave. If something goes wrong, overheating or sparks, an explosion could result.

Detailed explanation-3: -Common physical changes include melting, change of size, volume, color, density, and crystal form. The classic baking soda and vinegar reaction provides evidence of a chemical change due to the formation of a gas and a temperature change.

Detailed explanation-4: -Answer: An example of a physical change is pouring glue into water. It still remains in the liquid state. It will have the same properties because it is just watered down. An example of a chemical change that occurred is adding the glue substance to the borax substance.