Achef has decided that she will only cook in a way that does not alter the chemical make-up of food. following these guidelines, which of the following foods can she prepare? a. toasted bread b. scrambled eggs c. milkshakes d. cake

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).