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Showing posts from December 31, 2009

Smoke Bomb Materials

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The smoke bomb you would purchase from a fireworks store usually is made from potassium chlorate (KClO 3 - oxidizer), sugar (sucrose or dextrin - fuel), sodium bicarbonate (otherwise known as baking soda - to moderate the rate of the reaction and keep it from getting too hot), and a powdered organic dye (for colored smoke). When a commercial smoke bomb is burned, the reaction makes white smoke and the heat evaporates the organic dye. Commercial smoke bombs have small holes through which the smoke and dye are ejected, to create a jet of finely dispersed particles. Crafting this type of smoke bomb is beyond most of us, but you can make an effective smoke bomb quite easily. There are even colorants you can add if you want to make colored smoke. Let's start out with instructions for the easiest/safest type of smoke bomb you can make: Smoke Bomb Materials sugar (sucrose or table sugar) potassium nitrate, KNO 3 , also known as saltpeter (buy it online or you can find this at som...

Homemade Firecracker Materials

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Firecrackers are extremely easy and inexpensive to make yourself. You may want to make your own firecrackers because you are interested in learning how to make simple fireworks or it may be you are unable to obtain fireworks where you live. Fortunately, the materials needed to make your own firecrackers are very common. Homemade Firecracker Materials tape (e.g., transparent tape) toy gun caps (either the tape or the rings) or black powder fuse (you can make your own fuse ) pin or needle Toy gun caps are nice because the powder used in them is easy to work with. Here's how to get the powder out of the caps: Gently insert a pin or needle through the back of a cap through to the front. Remove the pin and re-insert it from the front, where you made the hole. Pry the powder out of the cap, tapping it onto a sheet or paper or plate or other working surface. Carefully work the pin around the edge of the cap to collect all of the powder. There is a very slight chance of popping t...

Make New Year's Fireworks

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'm partial to smoke bombs , since they are easy to make and don't explode, but there are lots of other fireworks you can make for your New Year's Eve celebrati

What Happens If You Touch Dry Ice?

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Dry ice is the solid form of carbon dioxide, which normally exists as a gas. It is extremely cold (-109.3°F or -78.5°C), so you can get frostbite from touching dry ice... but what if you just want to poke it or touch it for an instant? What happens if you taste it? Here's the answer. Answer: When dry ice heats up it sublimates into carbon dioxide gas, which is a normal component of air. The problem with touching dry ice is that it is extremely cold (-109.3°F or -78.5°C), so when you touch it, the heat from your hand (or other body part) is absorbed by the dry ice. A really brief touch, like poking dry ice, just feels really cold. Holding dry ice in your hand, however, will give you severe frostbite, damaging your skin in much the same manner as a burn. You do not want to try to eat or swallow dry ice because the dry ice is so cold it can 'burn' your mouth or esophagus, too.If you handle dry ice and your skin gets a little red, treat the frostbite like you would treat a ...