Chemical-bond

How To : Keep Garlic from Sticking to Your Hands & Knife

It's a shame that one of the world's tastiest foods can be such a pain to prep. Most cooks are familiar with this conundrum: chopping or crushing garlic releases a pungent liquid that causes bits of garlic to stick your knife and hands, creating a messy affair. So what is goin ...more

How To : Break chemical bonds

A difficult concept for many students to understand is the energy involved in breaking and forming bonds. A hydrate is a substance that has water bonded to it. In order to dehydrate you must add energy (endothermic) to break the bond to water. When hydrating you are forming a ...more

How To : Hydrate a video lab

This experiment is intended to introduce students to hydrated compounds. These compounds have water molecules coordinated in their chemical structures. Examples CuSO4*5H2O, BaCl2*2H2O, and NaC2H3O2*3H2O. Notice each formula has a " between the compounds formula and the number ...more

News : Make magic milk

Trippy! Get the kids around the table for this one. Here is the official Steve Spangler explanation: "Milk is mostly water but it also contains vitamins, minerals, proteins, and tiny droplets of fat suspended in solution. Fats and proteins are sensitive to changes in the su ...more

News : Are Diamonds Forever?

As Theo Gray of Gray Matter demonstrates below, contrary to what the ads may say, diamonds CAN expire. Especially when attacked with a blow torch and liquid nitrogen. Gray says: "Diamonds are neither rare nor intrinsically valuable nor uniquely romantic. Those are ideas inven ...more

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