Table of Contents
Introduction: What Is a Funnel in Chemistry
Objective of the Experiment
Required Materials
Experimental Procedure
Results and Observations
Safety Tips
Cleaning and Storage Tips
Introduction: What Is a Funnel in Chemistry
A funnel is a common piece of laboratory glassware, often made of glass or plastic, used for transferring liquids and aiding in separation processes. In chemistry, funnels play a crucial role during filtration, where a solid is separated from a liquid using filter paper and gravity.
Objective of the Experiment
To demonstrate the use of a funnel in chemistry for separating a sand-water mixture using basic filtration.
Required Materials
1 laboratory glass funnel
Filter paper
250 mL beaker
250 mL Erlenmeyer flask (conical flask)
Mixture of sand and water
Glass stirring rod
Retort stand with funnel clamp (optional)
Experimental Procedure
1.Fold the filter paper into a cone shape and place it inside the glass funnel.
2.Position the funnel over the conical flask using a stand or by hand.
3.Stir the sand-water mixture and pour it gently into the funnel.
4.Wait as the liquid flows through the filter paper, leaving sand behind.
5.Observe the clarity of the filtrate and the trapped solid.
Results and Observations
The clear liquid (filtrate) collects in the conical flask.
Sand remains on the filter paper, demonstrating effective separation.
The funnel allows controlled and clean liquid transfer.
Safety Tips
Wear safety goggles and gloves during the experiment.
Handle glassware with care to avoid breakage.
Dispose of the sand properly after filtration.
Cleaning and Storage Tips
Wash the funnel immediately after use with distilled water.
Dry the glassware thoroughly before storing.
Keep funnels upright to prevent scratches and dust buildup.
Filtration Techniques – Royal Society of Chemistry
