A group of students decides to investigate weather adding crushed eggshells to soil will affect the pH level of the soil. The students add diffrent amounts of eggshells to the soil. They test the pH level of each soil sample but then realize that they have forgotten to record the mass of the eggshells they added to each sample. Why is it important for the students to repeat this experiment?

A.to record accurate data
B.to form a new hypothesis
C.to rewrite the procedures
D.to test a different question

Your answer?

Yes, a.

A. to record accurate data

The correct answer is A, to record accurate data. In any scientific experiment, it is crucial to record all relevant variables accurately, including the amount or mass of the materials used. In this case, the students forgot to record the mass of the eggshells added to each soil sample, which means their data is incomplete. Without this information, they cannot accurately determine the relationship between the amount of eggshells added and the pH level of the soil.

To rectify this mistake and gather accurate data, the students should repeat the experiment while recording the mass of eggshells added to each soil sample. By doing so, they can ensure that the effects of different amounts of eggshells on the soil's pH level are properly measured and analyzed. This is necessary to draw valid conclusions and make meaningful observations from the experiment.