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OK, so you don't necessarily have to make ammonium nitrate to have ammonium nitrate — ammonium nitrate can simply be obtained from fertilizers and instant cold packs. Making homemade NH4NO3 can be much more expensive then buying it, but this method is not meant to be a viable route, it's an exploration of science and chemistry.

For your chemistry experiments, you'll eventually need to know how to use a desiccator. Well, this science tutorial, interactive animation will show you how to use a desiccator in the chemistry lab.

Find out how everything in a chemistry lab works, from pipettes to burners to recrystallization to storage. You'll get precise instructions on how to work and perform certain scientific duties in the chem lab, whether it's chemical or just ordinary high school science.

Find out how everything in a chemistry lab works, from pipettes to burners to recrystallization to storage. You'll get precise instructions on how to work and perform certain scientific duties in the chem lab, whether it's chemical or just ordinary high school science.

Find out how everything in a chemistry lab works, from pipettes to burners to recrystallization to storage. You'll get precise instructions on how to work and perform certain scientific duties in the chem lab, whether it's chemical or just ordinary high school science.

Find out how everything in a chemistry lab works, from pipettes to burners to recrystallization to storage. You'll get precise instructions on how to work and perform certain scientific duties in the chem lab, whether it's chemical or just ordinary high school science.

Find out how everything in a chemistry lab works, from pipettes to burners to recrystallization to storage. You'll get precise instructions on how to work and perform certain scientific duties in the chem lab, whether it's chemical or just ordinary high school science.

Find out how everything in a chemistry lab works, from pipettes to burners to recrystallization to storage. You'll get precise instructions on how to work and perform certain scientific duties in the chem lab, whether it's chemical or just ordinary high school science.

Apparently submerging a hand in liquid nitrogen isn't as painful as one might suspect (if you trust the Leidenfrost effect as much as Theodore of Gray Matter):

Heavy Water & Light Ice Experiment. What happens? Ice floating over vegetable oil but it decreases in baby oil.

In our personal experience, the hardest part about a science investigatory project is simply coming up with a good idea. And we suggest that for your investigatory project you find a topic that's both novel and useful.

When you need to crunch numbers quickly — and I mean really quickly — there's a cool method you can use to multiply two numbers together in just a few seconds.

Every day we pass bridges, whether it's a foot bridge, a highway overpass, a span over water, or a viaduct over a valley. We pass on these structures without even thinking of the engineering genius that went into their design and construction, let alone the science behind their strength.

Slope is the change in Y over the change in X. Written out, the formula looks is as follows:

What is a protein?Proteins are essential for your cells and body. These are over 100 types of proteins but what is a protein?

Have you ever wanted to see your heartbeat, but without the stress of having to be in the hospital? You can with this easy, step-by-step guide to turn your computer in a pulse monitor to check your heart rate from the comfort of your own chair. Check the beating of your heart after a workout to see how fast your blood is pumping or watch it drop after a soothing day at the spa or a nice bubble bath. The easy to follow video tutorial is set to a funky beat that is sure to get your blood (and...

Learn how to multiply and divide fractions.In order to multiply fractions you multiply the numerators and denominators, and then simplify.In order to divide fractions you keep,change the sign, and flip the second fraction,and then simplify the fraction.

The video reviews how to find the radius of a sphere given the volume.For example, find the radius of a sphere with a volume of 72 meters squared.The volume formula is 4/3 pi r cubed.In order to solve for the radius you have to undo the formula.