Wednesday, March 18, 2020
Light a Candle with Smoke (Flame Science Trick)
Light a Candle with Smoke (Flame Science Trick) You know you can light a candle with another candle, but if you blow one of them out, did you know you can relight it from a distance? In this trick, youll blow out a candle and relight it by causing flame to travel along a path of smoke. How to Do the Traveling Flame Trick Light a candle. Have a second source of flame ready, such as another candle, a lighter, or a match.Blow out the candle and immediately place the other flame into the smoke.The flame will travel down the smoke and relight your candle. Tips for Success If you have trouble lighting the smoke, try moving your flame closer to the wick because thats where the concentration of vaporized wax is highest. Another tip is to make sure the air is still around the candle. Again, this is so you maximize the amount of wax vapor around the wick and have a clear smoke trail to follow. How the Traveling Flame Trick Works This fire trick is based on how candles work. When you light a candle, the heat from the flame vaporizes the candle wax. When you blow the candle out, vaporized wax briefly remains in the air. If you apply a heat source quickly enough, you can ignite the wax and use that reaction to relight the wick of the candle. Although it looks like youre lighting the candle with smoke, its really just the wax vapor that ignites. Soot and other debris from the flame isnt ignited. You can watch a YouTube video of this project to see a candle relight itself, but its even more fun to try it yourself. Disclaimer: Please be advised that the content provided by our website is for EDUCATIONAL PURPOSES ONLY. Fireworks and the chemicals contained within them are dangerous and should always be handled with care and used with common sense. By using this website you acknowledge that ThoughtCo., its parent About, Inc. (a/k/a Dotdash), and IAC/InterActive Corp. shall have no liability for any damages, injuries, or other legal matters caused by your use of fireworks or the knowledge or application of the information on this website. The providers of this content specifically do not condone using fireworks for disruptive, unsafe, illegal, or destructive purposes. You are responsible for following all applicable laws before using or applying the information provided on this website.
Monday, March 2, 2020
Endothermic Reaction Examples
Endothermic Reaction Examples Heres a list of examples of endothermic reactions. You can use these when asked to cite an example or to get ideas to set up a demonstration of an endothermic reaction or process. Endothermic Reaction Definition An endothermic reaction is any chemical reaction that absorbs heat from its environment. The absorbed energy provides the activation energy for the reaction to occur. A hallmark of this type of reaction is that it feels cold. Endothermic Chemical Reactions A good example of an endothermic reaction includes dissolving a salt. It doesnt have to be table salt, nor does the solvent need to be water. The reaction of barium hydroxide octahydrate crystals with dry ammonium chlorideDissolving ammonium chloride in waterThe reaction of thionyl chloride (SOCl2) with cobalt(II) sulfate heptahydrateMixing water and ammonium nitrateMixing water with potassium chlorideReacting ethanoic acid with sodium carbonatePhotosynthesis (chlorophyll is used to react carbon dioxide plus water plus energy to make glucose and oxygen) Endothermic Processes These examples could be written as chemical reactions, but are more generally considered to be endothermic or heat-absorbing processes: Melting ice cubesMelting solid saltsEvaporating liquid waterConverting frost to water vapor (melting, boiling, and evaporation, in general, are endothermic processesMaking an anhydrous salt from a hydrateForming a cation from an atom in the gas phaseSplitting a gas moleculeSeparating ion pairsCooking an eggBaking bread Endothermic and Endergonic An endothermic reaction is a type of endergonic reaction. However, not all endergonic reactions are endothermic. Endothermic reactions involve heat absorption. Other forms of energy which might be absorbed in an endergonic reaction include sound and light.
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