Science Fair

HYPOTHESIS?In this science experiment, we showed how to make raisins swim up and down in a jar, using nothing more(prenominal) than a few things we found in our kitchen.

Overview
When baking club pa is added to a acetum solution, a gas is produced and this causes small bubbles to form. This is called a chemical reaction. 
This reaction between the baking soda and the vinegar produces a light speed dioxide gas, weewee, sodium and acetate ions which are dissolve in the water. It is this carbon dioxide gas, that causes the bubbles to form. Bubbles are little pockets of air or gas. As these bubbles are filled with gas, they are lighter or less(prenominal) dense than the vinegar solution and will wherefore float to the top of the liquid. An acid is a liquid that is normally sour in taste, and has a pH level of less than 7. 
Materials
1 large glass jar (an empty monkey nut butter jar will do)
½ a cup of vinegar
2 tablespoons of baking soda
A hand full of raisins
Tap water
Procedure
conform to one quarter of the jar with vinegar and the top with wiretap water.
Stir the solution with a spoon.
Add the baking soda and stir.
Wait for a few minutes until bubbles start to form.



If the bubbles fatiguet form, try adding more vinegar.
Drop in a few raisins, one at a time, and observe. 
Observation
The raisins drop down to the bottom of the jar when they were first dropped into the jar. Soon the raisins will locomote to the top of the jar. They stayed there for a while, then started to sink again.
Conclusion
The bubbles of carbon dioxide gas stuck to the raisins and helped carry the raisins up to the top. When they reached the top of the surface, the bubbles disappeared and the raisins loosed the support of the bubbles and sink back to the bottom of the liquid, as the raisins are denser than the amount of water displaced.If you want to get a full essay, order it on our website: Orderessay



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