4. BONUS: Lab Techniques and Procedures

In which situation is it most appropriate to use percent error in reporting experimental results?

Why is it important to include a negative control in an experiment?

In the context of experimental error, what does the term 'data' refer to?

Which of the following is a common source of experimental error when using flame tests to identify metal ions?

In a controlled experiment, how many independent variables can be tested at one time?

Why is it necessary to heat the collected filtrate (solid on the filter paper) prior to weighing in a gravimetric analysis experiment?

Which of the following would most likely be included in the 'analysis' section of a lab report discussing experimental error?

Which of the following experiments would best test a hypothesis in the scientific method?

Why is it necessary to have positive and negative controls in an experiment?

Which of these describes a way to avoid researcher bias in an experiment?

Why is it important for an experiment to include a control group?

Which of the following is a potential source of error in a typical chemistry experiment?

In the context of experimental error, what does it mean to say that experimental conditions are controlled?

In a controlled experiment, how many variables should be tested to ensure reliable results?

If a spectrophotometer reports an absorbance value that is too high, which of the following actions should be taken to obtain a more accurate measurement?