Which of the following is an example of a chemical change?

A. Iron changing color when heated
B. Gas bubbles forming in boiling water
C. Balls of wax forming when melted wax is poured into ice water
D. A gas forming when vinegar and baking soda are mixed

Question

Which of the following is an example of a chemical change?

A. Iron changing color when heated
B. Gas bubbles forming in boiling water
C. Balls of wax forming when melted wax is poured into ice water
D. A gas forming when vinegar and baking soda are mixed

kendricklamar2014 · Answer

Is it a gas forms when vinegar and baking soda are mixed

anonymous · Answer

These all pretty much seem like they could make a case for a chemical change. But here I think A stands out because whenever a color change takes place, thats usually an indication that a chemical change has taken place.

excalibur0126 · Answer

a gas forming when vinegar and baking soda are mixed