Question

For a science project, Janet performs four experiments that are supposed to show a chemical reaction. She displays her results in a table.

A 4-column table with 4 rows. The first column titled experiment has entries 1, 2, 3, 4. The second column titled substances has entries water + heat, vinegar + baking soda, cabbage juice + lemon juice, liquid A + liquid B. The third column titled evidence of reaction has entries gas formation, gas formation, color change, precipitate formation. The fourth column titled Chemical Reaction ? has entries yes, yes, yes, yes.

In the column titled "Chemical reaction?,” which experiment’s data should be changed to "No”?

Experiment 1
Experiment 2
Experiment 3
Experiment 4

Answer 1

Experiment 1

Boiling water produces water vapor (a physical change, evaporation), not a chemical reaction that forms new substances.