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The Processes of Science — Test Answers

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21
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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?

A
He is trying to increase his accuracy but not his precision.
B
He is trying to decrease his precision and increase his accuracy.
C
He is trying to increase his precision but not his accuracy.
D
He is trying to increase his precision and decrease his accuracy.
22
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What are the independent and dependent variables in this experiment?

A
Boiling point is the independent variable, and mass is the dependent variable.
B
There are two dependent variables and no independent variables.
C
Mass is the independent variable, and boiling point is the dependent variable.
D
There are two independent variables and no dependent variables.
23

Which statement best describes her shots?

A
Her shots were accurate but not precise.
B
Her shots were both precise and accurate.
C
Her shots were neither accurate nor precise.
D
Her shots were precise but not accurate.

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