Question

which of the following is an example of observational scientific investigation

mixing two reactants together in a small beaker
drying a solid produced by placing it in an oven
noting the color of a solution when heated <--- i think maybe this one
placing test tubes in ice water for 15 minutes

Answer 1

I believe it would also be noting the color of a solution when heated.

Answer 2

Answer;

-An example of observational scientific investigation is noting the color of a solution when heated.

Explanation;

-A scientific process or scientific method requires observations of nature and formulating and testing the hypothesis.

-Scientific observation is the central element of scientific method or process. Observation consists of receiving knowledge of the outside world through our senses, or recording information using scientific tools and instruments.