EVERYDAY SCIENCE

Detailed explanation-1: -Your best friend decides to toast a piece of bread, but leaves it in the toaster too long. The bread is black and the kitchen is full of smoke. Chemical because there is a change in color and the smoke is a change of substance.

Detailed explanation-2: -Toasting bread is a chemical reaction because the heat applied to the bread causes a process called the Maillard reaction. This is a chemical reaction that causes the browning of food when cooking. The Maillard reaction happens between amino acids, which make up proteins, and a reducing sugar such as glucose.

Detailed explanation-3: -When does bread become toast? The browning process we call toasting is an example of the Maillard reaction, in which amino acids and sugars interact to produce the characteristic brown color, texture, and flavor we know as toast.

Detailed explanation-4: -The heat, light, dire and smoke are all good characteristics of a chemical change, which result in a completely new matter, sometime ashes. Change like a cutting of wood, melting of ice and dissolving sugar in water, no new substances are formed. So, these are examples of physical changes.

Detailed explanation-5: -Butter melting on your toast….. This is a Physical Change!