During an investigation, a student mixes two liquids in a beaker. The student recorded the following observations in her science notebook.

I. Both liquids are clear prior to mixing.
II. Both liquids are room temperature prior to mixing.
III. The liquid turned pink when mixed.
IV. The temperature of the liquid increased.
V. Over time, a white solid formed at the bottom of the beaker.

Required:
What are evidence of a chemical reaction?