Question

A food item that is left out of the refrigerator turns brown and forms bubbles and gas. What are the signs that this is a chemical reaction? Check all that apply. * 2 points Heat is produced Bubbles appear. The color changes. Heat is absorbed. A precipitate forms.

Answer 1

Actually the correct answers are C(Bubbles appear) and E(The color changes). The other person was half right and half wrong. C is correct but B(Heat is absorbed) is not.

Explanation: I just took the quiz and got it right, For anyone else doing the quiz good luck! Hope this helped!