A scientist wants to perform a controlled experiment to test the effect of rust on chemically treated iron. which action would b

Question

3 years ago

10

A scientist wants to perform a controlled experiment to test the effect of rust on chemically treated iron. which action would b

e most important to perform in a controlled experiment? design an experiment that is based on previously published results. expose the treated iron to the corrosive effects of the air. test a large piece of treated iron and a small piece of untreated iron. test a piece of treated iron and a piece of untreated iron under the same conditions.

Chemistry

2 answers:

olga2289 [7] · Answer 1 · 2022-08-10T02:53:49+03:00

olga2289 [7]3 years ago

9 0

The answer is to test a piece of untreated and treated under same conditions!

Ilia_Sergeevich [38] · Answer 2 · 2022-08-10T05:08:38+03:00

Answer: Option (d) is the correct answer.

Explanation:

A test or experiment in which only one variable is changed at a time in order to verify the result is known as a controlled experiment.

That is only independent variable need to be adjusted with respect to the dependent variable.

Thus, we can conclude that the action to test a piece of treated iron and a piece of untreated iron under the same conditions would be most important to perform in a controlled experiment in the given situation.