This is our second one pound gummy bear reacting with potassium chlorate. For this video we filled the gummy bear with more potassium chlorate resulting in a longer reaction.
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.
Although they appear to be molded out of plastic, ping pong balls are actually made from nitrocellulose – cellulose from plant fiber that has been treated with nitric acid. While this nitrocellulose can be used to form a lightweight, high-bouncing ball; it is also highly flammable.
Butane is a flammable gas that is often used in lighters and for cooking. When soap bubbles are filled with butane, they create amazing flammable bubbles that can create an exciting combustion demonstration. Because the butane burns very quickly, it is even possible to hold a handful of burning bubbles. Remember that handling any burning materials, especially gasses, is dangerous; and that this demonstration should not be attempted at home!
Many people do not view iron as a flammable metal. If an iron rod is placed over a flame, it can be heated until it glows orange without actually burning. When finer iron, in forms such as iron powder or steel wool, comes in contact with a flame; however, it will quickly oxidize, appearing to burn as it is chemically changed into iron oxide.
Part 2 of 2. In the second part of this fifth grade science lesson, our class looks at two flammable liquids – isopropyl alcohol and acetone. When set on fire, it is not the liquid form of these chemicals that burns, but rather the vapor as the liquid evaporates. We see how this rate of evaporation affects the combustion of a flammable liquid.
Part 1 of 2. In the first part of this fifth grade science lesson, our class looks at the properties of two flammable solids – magnesium and lycopodium. Magnesium is a metal that burns with a brilliant white flame at a temperature of over 2,200 degrees Celsius. Lycopodium is a fine organic powder that while slightly flammable in a compact state, is highly explosive as airborne particles.
As the temperature of air increases, the air molecules move apart making the air less dense. Hot air balloons work on this concept, using lighter, heated air to lift the balloon. In this video, we demonstrate how to make a hot air balloon using a thin plastic trash bag and a few straws. When the homemade balloon is filled with warm air, it is able to lift itself into the sky.
Butane is a flammable gas that is often used in lighters and for cooking. When soap bubbles are filled with butane, they create amazing flammable bubbles that can create an exciting combustion demonstration. Remember that handling any burning materials, especially gasses, is dangerous; and that the demonstrations shown in this video should not be attempted at home!