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

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

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

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

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

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

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.