Question

Question 1 . . Which of the following is not an example of a chemical change?. . A candle burning. . Cake baking. . Glass breaking. . A nail rusting. . Question 2 . . All of the following require breaking and forming chemical bonds except:. . Freezing ice. . A plant decaying. . A piece of silver tarnishing. . Roasting a marshmallow. . Question 3 (Multiple Choice Worth 2 points). . Chemical changes. . are only caused through burning a material.. . only occur to weak materials.. . change the identity of a substance.. . do not affect the identity of a sub

Answer 1

For question 1, the correct answer is a glass breaking because this process involves only a physical change. The identity of the glass was not changed. For question 2, the correct answer is freezing ice because the bonds in a phase change are not broken down or are formed. For question 3, the correct answer is the last option.  Chemical changes change the identity of a substance.