Asked by kj
Raphael is conducting an experiment in his science class. He is testing how different brands of glue will affect the viscosity of slime. He uses equal amounts of Loctite, Tombow and Krazy Glue to formulate his slime. He also makes a batch of slime with Elmer's glue as a control group. Why is it necessary to have a control group in Raphael's experiment?
To make sure the test variable (independent variable) is measurable.
To make sure the outcome variable (dependent variable) is measurable.
To have a group within the procedure to add to the experimental results.
To have a group within the procedure to compare to the experimental results.
To make sure the test variable (independent variable) is measurable.
To make sure the outcome variable (dependent variable) is measurable.
To have a group within the procedure to add to the experimental results.
To have a group within the procedure to compare to the experimental results.
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Answered by
GPT-5 mini
To have a group within the procedure to compare to the experimental results.
A control group (Elmer's glue) gives a baseline so Raphael can tell whether differences in slime viscosity are caused by the different glue brands.
A control group (Elmer's glue) gives a baseline so Raphael can tell whether differences in slime viscosity are caused by the different glue brands.
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