Potassium chlorate is a chemical that reacts violently with sugar. In this video, we filled a one pound gummy bear with potassium chlorate and used a magnesium strip to provide heat to begin the reaction.
This is a video of a demonstration with our fifth grade class while studying various physical and chemical properties of matter. Fluorescence is a property that describes a substance’s ability to give off light in response to external radiation. Solutions containing chemicals like fluorescein and rhodamine B will glow in the presence of ultraviolet radiation. Luminescence, on the other hand, is a substance’s ability to emit light through a chemical reaction. In this demonstration, luminol reacts with hydrogen peroxide to produce blue light.
Fluorescence is a property of some substances that allow them to emit light in response to certain types of external radiation. Using a UV lamp, we were able to create amazing fluorescent displays with solutions of fluorescein (yellow / green), rhodamine B (pink), and quinine (blue). By combining these three fluorescent chemicals, we were able to create a variety of brilliant fluorescent colors.
For our Halloween activity, we used a chemical reaction to explode 26 carved pumpkins. When calcium carbide comes in contact with water, it reacts to create flammable acetylene gas. By allowing the pumpkins to fill with acetylene, we were able to create a chain explosion down the line of pumpkins.
Glow sticks give off light because of a chemical reaction between hydrogen peroxide and diphenyl oxalate that emits light. This process of light being given off by a chemical reaction is called chemical luminescence. In this video we look at the luminescent properties of this reaction.