Question

Identify any two physical changes that took place while preparing the burgers

Answer 1

roasting of bread

cutting of vegetables

because any new substance is not form in this process.

Answer 2

Answer:

Chemical changes are characterized by the formation of new substances and the making and breaking of chemical bonds. In practice, this generally means a colour change or the precipitation of a new substance, or by the formation of a gas.

When you cook the patty, you certainly get the colour change, as the meat caramelizes and turns brown. You also get the aroma of the cooked meat - both processes indicate chemical change.

It's time for lunch now!