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

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

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

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

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

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

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