Chemstry

 

     In science club last week, the class learned the differences between CO2(carbon dioxide) and oxygen.  We learned that first, CO2 is a heavier element than oxygen; secondly, oxygen is one of the elements needed for fire to burn along with fuel, and heat.  However, carbon dioxide would put the fire out.  To test these theories, the class used: a candle on a wire, 2 cylinders, vinegar, baking soda, and matches.  Using these materials, the class first lit the candle and put it into a cylinder and it did not go out.  Secondly, the class mixed the vinegar, and baking soda to produce CO2 in the cylinder.  To prove that CO2 was in the cylinder, the class lit the candle and put it into the cylinder and the fire went out proving there was no oxygen, and only carbon dioxide.  This proves the first difference, and to prove the second difference the class poured the carbon dioxide into the second cylinder.  To prove that carbon dioxide is dense enough to pour, we put a lit candle into the second cylinder and the candle went out proving CO2 is heavier than oxygen.

-Jordan

This is when we lowered the candle into the cylinder that we poured the CO2 into it