Why should you wash glassware at the end of lab activity?

Washing glassware at the end of a lab activity is crucial for ensuring cleanliness and preventing contamination in future experiments. Residual chemicals or substances can interfere with subsequent results, leading to inaccurate data. Additionally, proper cleaning helps maintain the integrity and longevity of the glassware, ensuring it remains safe and effective for future use. Lastly, adhering to good laboratory practices promotes a safe and organized working environment.