Chemistry, 23.12.2019 20:31 mcdowelle360

With easy 8th grade math!
which of the following is an example of observational scientific investigation?

a)mixing two reactants together in a small beaker.

b)drying solid produced by placing it in an oven.

c)placing test tubes in an ice bath for 15 minutes.

d)noting the color of a solution when heated.

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