Which is an example of making a qualitative observation? measuring the speed of the chemical reaction describing how copper changes color in chlorine recording how long it takes to burn magnesium showing the results of an experiment with a graph

The answer is: Describing how copper changes color in chlorine.

Explanation:

A qualitative observation is a description of the characteristics or qualities of an environment, in which a measurement with numerical magnitudes is not made. Measuring the speed of a chemical reaction, record the time that takes to burn magnesium and make a graph are quantitative observations.

hi there!

your question asks at which segment does freezing occur.

since we're talking about water, the freezing point of water will be 32 degrees fahrenheit or below.

hope this ! ~

the force on the thing and the distance the force moves the thing