In this demonstration, students will observe a reaction between baking soda and vinegar in the presence of a burning candle. The initial environment has plenty of oxygen present in order to sustain the candle’s flame; however the reaction will produce carbon dioxide which will cause the lit candle to extinguish. Students will analyze the outcome and compare the presence of the gases in the container and make determinations about the densities of each.

THINK SAFETY FIRST:

+ Always use caution around open flames. Keep flames away from flammable substances.
+ Always wear safety goggles when handling chemicals in the lab.
+ Vinegar vapors can be irritating. Work in a well-ventilated area. In the event of eye contact, flush with water.
+ The concentration of acetic acid in this experiment does not present any significant hazards. Always use caution around open flames. Keep flames away from flammable substances.
+ Always use caution around open flames. Keep flames away from flammable substances.
+Always be aware of an open flame. Do not reach over it, tie back hair, and secure loose clothing.
+Open flames can cause burns. Liquid wax is hot and can burn the skin.
+An operational fire extinguisher should be in the classroom.
+Students should wear proper safety gear during chemistry demonstrations. Safety goggles and lab apron are required.

**AACT teacher members** can find this Demo in the resource library on teachchemistry.org:

[ Ссылка ]

Not a member? Learn more about joining! [ Ссылка ]

свернуть