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

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

A) A group that controls the experiment.
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 does the experiment first.

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

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

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

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