Boyd takes additional measurements of the mass of product formed in a reaction. He uses a balance that has smaller graduations than the first balance he used. What is Boyd most likely trying to change?

Smaller graduations let the balance measure mass in finer increments, so Boyd can make more precise measurements. Precision is about how finely or consistently measurements are recorded; accuracy is how close they are to the true value. A finer scale does not by itself make the measurements more accurate, so the best choice is “increase his precision but not his accuracy.”

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