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# Science fair

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### Science fair

1. 1.  As we light one end of the paper, the smoke created on one side will go into the side of the paper inside the bottle and fall looking like a waterfall.
2. 2.  Candle or Lighter Piece of paper Bottle
3. 3. 1. Make a hole in the top of the bottle2. Roll the piece of paper to make it look like a long pipe.3. Put the rolled piece of paper into the hole that you just made in the bottle. Leaving half of the paper hanging.4. Light the piece of paper. And look at the inside of the bottle.5. Now you should be able to see the fire fall.
4. 4.  Even though the fall wasn´t very big, you can see that your hypothesis was correct. As the smoke started coming out in one of the side you can see that the fall came out on the side that wasn´t lighted. This is because there is no air inside the bottle so it comes down as a fall.
5. 5.  Ingredients:  Potassium nitrate - 4 parts  Charcoal - 5 parts  Sulfur - 10 parts  Wood dust - 3 parts One way to make smoke is to craft a smoke bomb, but you can make a smoke powder, too. Here are some formulations for colored smokes. The parts or percents are by weight. Basically what you do is measure the ingredients, sift them together to mix them, and ignite the powder to produce smoke. Up to 2% sodium bicarbonate (baking soda) may be added to slow the combustion/cool the reaction, if necessary.
6. 6.  The flame test is used to visually determine the identity of an unknown metal or metalloid ion based on the characteristic color the salt turns the flame of a bunsen burner. The heat of the flame excites the metals ions, causing them to emit visible light. The characteristic emission spectra can be used to differentiate between some elements.
7. 7.  In general, there is no specific proportion of colorant to mix with the water or alcohol. Add as much powdered colorant as will dissolve in the liquid (roughly a half pound colorant to a gallon of water). Do not attempt to mix colors together - you will probably end up with a normal yellow flame. If you want multicolored fire, try adding several pinecones, each treated with a single colorant, or scatter a mixture of dried colored sawdusts across the fire.
8. 8.  Intel International Science and Engineering Fair. ESI2011 Slovakia – Global youth Science fair.