Percent Error in Chemistry Explained

What does percent error help you understand in an experiment?

• The difference between the accepted and measured values

• The number of trials conducted

• The exact value of the measured result

• The total time taken for the experiment

In the context of percent error, what is the 'accepted value'?

• The value you aim to achieve

• The average of multiple trials

• The value after error correction

• The value you obtain from your experiment

Why is it important not to eliminate the negative sign in percent error calculations?

• To simplify the calculation

• To understand if the measured value is higher or lower than the accepted value

• To make the result always positive

• To avoid confusion in the formula

What is the measured value in an experiment?

• The average of all trials

• The theoretical value

• The value obtained from the experiment

• The value you aim to achieve

How do you calculate percent error?

• Multiply the measured value by the accepted value and divide by 100

• Divide the accepted value by the measured value and multiply by 100

• Subtract the measured value from the accepted value, divide by the accepted value, and multiply by 100

• Add the accepted value and measured value, then divide by 2

In the given example, what was the accepted value?

• 0.15 grams

• 7.5 percent

• 2.00 grams

• 1.85 grams

What does a positive percent error indicate?

• The measured value is greater than the accepted value

• The measured value is less than the accepted value

• The experiment was conducted incorrectly

• The accepted value is incorrect

What might cause a measured value to be less than the accepted value?

• Incorrect accepted value

• Excessive product collection

• Loss of product during the experiment

• Perfect experimental conditions

Why is it important to minimize instrument error?

• To ensure the experiment is faster

• To use less material

• To achieve more accurate results

• To avoid repeating the experiment

What should be included in the conclusions and questions at the end of every experiment?

• The total cost of the experiment

• The reasons for any discrepancies in the results

• The names of all participants

• The time taken for each step