4. BONUS: Lab Techniques and Procedures

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?

In an experiment, which component serves as the point of comparison for the results?

Which of the following statements best describes the role of variables in an experiment?

What is the primary reason to include a control group in an experiment?