A) To protect your eyes from potential chemical splashes or spills.
B) Because it is a fashion trend among scientists.
C) To avoid getting your eyelashes dirty.
D) To look more professional in the lab.

A) To make the experiment more challenging.
B) To waste time in the lab.
C) To ensure safety, accuracy, and reproducibility of the results.
D) To demonstrate your independence from guidelines.

A) A group that does the experiment first.
B) A group that cheats in the experiment.
C) A group in which the variable being tested is not applied, used as a baseline for comparison.
D) A group that controls the experiment.

A) To make the experiment last longer.
B) To provide a testable prediction about the outcome of the experiment.
C) To confuse the experimental process.
D) To provide a summary of the experiment after completion.

A) Ruler
B) Stopwatch
C) Balance
D) Thermometer

A) To waste time and resources in the lab.
B) To discourage further experimentation.
C) To confuse the validity of the initial results.
D) To ensure that the results are consistent and not due to chance or errors.

A) Independent variables.
B) Constant variables.
C) Dependent variables.
D) Control variables.

A) To confuse the data analysis.
B) To show off your math skills.
C) To ensure the reliability and validity of the results.
D) To impress your classmates.