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A Film Canister Explosion
A film canister attached to a piezoelectric igniter can be used to demonstrate the energy contained in two drops of a flammable liquid. Upon ignition, the film canister travels several feet.
Acknowledgement: 'Micro Explosions' by Al Definer, The Chemistry Teachers' Club of New York, 1/93
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Students can make observations of a demonstration of the Piezo Popper Kit to understand local weather conditions (thunder and lightning). Students can use and share observations of local weather conditions to describe patterns over time.
Students can use the Piezo Popper Kit in an investigation to make observations and/or measurements of an object's motion to provide evidence that a pattern can be used to predict future motion.
Students can use the Piezo Popper Kit in an investigation to make observations to provide evidence that energy can be transferred from place to place by sound, light, heat, and electric currents.
Students can use the Piezo Popper Kit in an investigation to ask questions and predict outcomes about the changes in energy that occur when objects collide.
Energy is present whenever there are moving objects, sound, light, or heat. When objects collide, energy can be transferred from one object to another, typically also transferred to the surrounding air; as a result, the air gets heated and sound produced.
Students can use the Piezo Popper Kit to develop a model that predicts and describes changes in particle motion, temperature, and state of a pure substance when thermal energy is added or removed.
Students can use the Piezo Popper Kit to design a project to construct, test, and modify a device that either releases or absorbs thermal energy by chemical processes.
Students can use the Piezo Popper Kit in an investigation to provide evidence that the change in an object's motion depends on the sum of the forces on the object and the mass of the object.
Students can use the Piezo Popper Kit in an investigation to apply scientific principles to design, construct, and test a device that either minimizes or maximizes thermal energy transfer.
Some chemical reactions release energy, others store energy.
A solution needs to be tested, and then modified based on the test results in order to improve it.
Students can use the Piezo Popper Kit in an investigation to gather evidence to compare the structure of substances at the bulk scale to infer the strength of electrical forces between particles.
Students can use the Piezo Popper Kit to develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.
Students can use the Piezo Popper Kit in an investigation as evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which the reaction occurs.
Students can use the Piezo Popper Kit to make observations and communicate scientific information about why the molecular-level structure is important in the functioning of a material.
Chemical processes, their rates, and whether or not energy is stored or released can be understood in terms of the collisions of the molecules and the rearrangements of the atoms into new molecules, with consequent changes in the sum of all bond energies in the set of molecules that ate matched by changes in kinetic energy.
Attraction and repulsion between electric charges at the atomic scale explain the structure, properties, a transformation of matter, as well as the contact forces between material objects.
Students can make observations of a demonstration of the Piezo Popper Kit to understand local weather conditions (thunder and lightning). The heating and release of energy, is a tangible simulation of what happens during a thunder and lightning storm.
For younger children a demonstration of the Piezo Popper provides a very visual, loud and active display of physics. Students can use the experience to understand energy, energy transfer, motion, weather and chemical reactions
Students can use the Piezo Popper in a number of different investigations that involve combustion. It is safe for the mature students to manipulate and operate. During the operation of the Piezo Popper safety goggles must be worn and supervision from the teacher maintained. Students add two drops only of a flammable liquid, e.g. ethanol, methanol, acetone, or perfume to the film canister. (Do not use gasoline.) Cover with the cap, shake, and warm the canister in your hands. Warn students that it makes a loud noise, and that they should cover their ears. Point it away from people and push the red button of the charger. The film canister could travel over ten feet! Students can learn about and build on their knowledge of chemical reactions, energy, energy transfer, weather, electric currents, and motion.
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