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All of the following are chemical changes except A. Rust forming B. A balloon expanding C. Photosynthesis D. Baking bread

1 Answer

6 votes

Answer:

B. A balloon expanding

Step-by-step explanation:

A. Must be a chemical change because of the reaction between the metal and oxygen in the air

B. Is NOT a chemical change since the elastic property of a balloon is a physical property

C. The process of photosynthesis represents a chemical change of carbon dioxide and water (along with heat) to glucose and oxygen

D. Baking bread involves the reaction of sugars and alcohols when heat is applied to release carbon dioxide causing the bread to rise.

User Daniel Auger
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