Question

a scientist performed an experiment that had an unexpected result. before telling anyone about the result, the scientist performed the experiment again. what is the most likely reason the scientist performed the experiment more than once?

the scientist wanted to be sure the results were accurate.

the scientist had extra chemicals and wanted to use them all.

the scientist wanted to get different results.

the scientist wanted to make sure no one else could do the experiment.

Explanation:

In scientific experimentation, repeating an experiment with unexpected results is a standard practice to verify the accuracy and reliability of the results. Using extra chemicals, wanting different results, or preventing others from doing the experiment are not valid scientific reasons for repeating an experiment. The main goal of repeating is to confirm the accuracy of the initial (unexpected) result.

Answer:

The scientist wanted to be sure the results were accurate.