Science Fair

HYPOTHESIS?In this science experiment, we showed how to make raisins swim up and brush up in a jar, using nothing more(prenominal) than a hardly a(prenominal) 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 acetum produces a light speed dioxide gas, weewee, sodium and acetate ions which ar dissolve in the water. It is this carbon dioxide gas, that causes the bubbles to form. Bubbles are little pockets of tonal pattern or gas. As these bubbles are filled with gas, they are brightness level or less(prenominal)(prenominal) dense than the vinegar solution and will why float to the top of the liquid. An acid is a liquid that is unremarkably sour in taste, and has a pH level of less than 7.  Materials 1 large glass jar (an empty scallywag nut butter jar will do) ½ a cup of vine gar 2 tablespoons of baking soda A pass away full of raisins Tap water Procedure conform to bingle quarter of the jar with vinegar and the top with wiretap water. prove the solution with a spoon. Add the baking soda and stir. have a bun in the oven 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 start to the top of the jar. They stayed there for a while, then started to sink again. ending The bubbles of car! bon 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 punt of the bubbles and sink back to the bottom of the liquid, as the raisins are denser than the tote up of water displaced.If you want to get a full essay, enact it on our website: OrderCustomPaper.com

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