Frightened run-away pepper experiment – cohesion principles.

We all know how glue or tape can be used to stick two objects together. These adhesives cause the two objects to cohere (or adhere) together. Cohesion is the word for this sticking force. Cohesion also occurs on common everyday objects – rain to a car’s windows, dust to the ceiling fan, chewing gum on…

Most substances have three states – solid, liquid, and gas. When they go from a solid to a gas, they usually turn into a liquid in between. Ice is a good example. It first melts into a liquid and then evaporates into a gas. Sublimation is when a chemical compound turns from a solid to…

Pouring liquid nitrogen into a plastic container

Liquid nitrogen, represented by the equation LN2, is often used in higher level science experiments. In this experiment, we’ll create a liquid with the same “ultra cold” properties found in liquid nitrogen. You’ll need two plastic bottles, one slightly smaller than the other.

Ever had a hot, steaming cup of Oobleck? Geez, I hope not. The stuff is nasty! But it does exhibit some interesting properties. Read on and learn how to make Oobleck slime!

Chemical reactions occur every day all around us. A chemical reaction is a process where one type of substance is chemically converted to another substance. That fizzling toilet bowl cleaner is a chemical reaction. The fire in your fireplace is another type of chemical reaction. The smoke that comes out of Dad’s ears when you…

In this science experiment we will introduce you to a principle called osmosis. Using simple household items we will demonstrate what osmosis is and how it works.

Make your own silly putty or green slime and then take a dab of green slime and wipe under your nose. Then tell Mom you’re not feeling well. Or take the brown silly putty and place a lump on Dad’s chair right before he sits down. When he stands up make a scrunched up face…

Everyone knows recycling is good for our environment, but do you know how the recycling process is actually done? In this experiment, we’ll recycle a newspaper into nice, neat little sheets of fresh paper.

Invisible ink has been used by spies for centuries. At the time of the Revolutionary War, invisible ink made of a mixture of ferrous sulfate and water was commonly used. The secret messages were often written in between the lines of a normal letter. When heat or a special chemical (such as sodium carbonate) were…