which is an example of making a qualitative observation?\nmeasuring the speed of the chemical…

which is an example of making a qualitative observation?\nmeasuring the speed of the chemical reaction\ndescribing how copper changes color in chlorine\nrecording how long it takes to burn magnesium\nshowing the results of an experiment with a graph
Answer
Brief Explanations:
Qualitative observations describe qualities or characteristics without numbers. Measuring speed, recording time, and showing results with a graph involve quantitative data. Describing color - change is a qualitative observation as it involves a non - numerical characteristic.
Answer:
describing how copper changes color in chlorine