Question

Reggie and charlotte are baking oatmeal cookies. They dip the baked cookies in melted chocolate. The chocolate cools to form a hardened coating. Reggie argues the entire chocolate-covered cookie has undergone a chemical change. Charolette disagrees, saying only the original oatmeal cookie has undergone a chemical change, not the chocolate coating.

Answer 1

Charlotte, because baking causes a chemical change, but melting objects is a non-chemical change.

Answer 2

I'll go with Charlotte.

Before the dip: Naked oatmeal cookies, warm gooshy melted chocolate.

After the dip: Oatmeal cookies inside a covering, cool solid chocolate.

No new substances appeared during the process. To me, that means that no chemical change happened.