What should you do before you conduct an experiment with flammable gas?

Before conducting an experiment with flammable gas, ensure you are in a well-ventilated area and have appropriate safety equipment, such as goggles, gloves, and a lab coat. Check that all equipment is in good condition and properly set up to prevent leaks or accidents. Familiarize yourself with the Material Safety Data Sheet (MSDS) for the gas being used, and have a fire extinguisher and emergency procedures readily accessible. Finally, inform others in the vicinity about the experiment and any potential hazards.