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

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

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

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

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

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

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

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