Question

Which of the following is an example of observational scientific investigation?

A. mixing two reactants together in a small beaker.
B. noting the color of a solution when heated.
C. placing test tubes in an ice bath for 15 minutes.
D. drying solid produced by placing it in an oven.

Answer 1

The Awnser is C

Step-by-step explanation:

Placing test tubes in an ice bath for 15 minutes