Dr. Wong conducted an experiment in his laboratory. He wrote down a list of things he observed during the experiment. Which of the following is a qualitative observation? The liquid in the beaker smelled like rotting eggs. The liquid in the beaker turned from clear to blue after Dr. Wong added a chemical. The liquid in the beaker became hot after Dr. Wong added a chemical. There was less liquid in the beaker after Dr. Wong conducted the experiment than before he conducted the experiment.
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