Pressure

Skating on thin ice pressure experiment

Skating on thin ice   Pressure - you feel it at school, your teacher feels it during class (yes, a room full of little scientists can be stressful for some teachers), and your dad feels pressure when Mom asks him for the tenth time to take out the trash. Here's an interesting experiment that demonstrates a different kind of pressure - the forces of scientific pressure and how it can affect other objects. Place the corked bottle on a table. It helps if the bottle has a small neck. Balance an ice cube on the cork. Cut off a 12 inch section of wire. Tie two hammers or other heavy objects to both ends of the wire. Balance the wire across the middle of the…
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Chemical Reactions

Making water split

Making water split As we know, water is actually made of hydrogen and oxygen molecules tightly bound together to form that liquidy goodness we so love to spray on each other. So if it’s made of oxygen, why can’t we breathe it? Actually, we could breathe it IF we could separate the oxygen out from the hydrogen. Fact is, we can’t. If we tried to breathe water we’d instead get the liquidy stuff which of course, our lungs cannot absorb.  If you tend to forget this when swimming, here's a simple poem to help you remember: The fact is, we cannot lie, if you breathe water, you will die. Still, they use their gills to separate the oxygen from the hydrogen. For fish, this really…
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Atomic/Electric

Piezo Explosive Popper

Piezo Explosive Popper Kids love things that go boom. Throw in some flames and you've got one of the most popular experiments in Reeko's Mad Scientist Lab. The piezo popper, also known as the film cannon, binaca bomb, or photo flash, lets us release energy from a rapidly combusting fuel-air mixture and use that expanding air to blow the top off a film canister. The force of the mini-explosion will be so great that we'll be able to propel the canister over 3 stories in the air! Take apart the fireplace lighter and look for the "igniter" part. The igniter is the "clicker" mechanism and will have a button that is pressable and two metal connection points. The clicker button will be used to trigger…
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Atomic/Electric

Lemon battery

Lemon battery Batteries store chemical energy that can be transmitted as electrical energy through various components in a circuit. You can think of the circuit as the path the electrons (electricity) take. The path has to have no breaks in it and it much be a path made of a material that will allow the electrons to flow ( most metals although some are better conductors than others). Batteries, such as the one we are about to build, have electrodes, or the connection points on the battery. The anode is the electrode at which electrons leave the cell and oxidation occurs, and the cathode is the electrode at which electrons enter the cell and reduction occurs. In our battery, the lemon juice acts as the…
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