Viraj+S13


 * TESTING IF A PING PONG BALLS MASS AND BOUNCE ABILITY GETS AFFECTED WHEN PING PONG BALLS ARE DIPPED IN DIFFERENT ACIDS AND BASES FOR A CERTAIN AMOUNT OF TIME **

Viraj S. 2012-2013

The purpose of this experiment was to see if a ping pong balls mass and amount of bounces gets affected when the ping pong ball is dipped in acids and base for 30 seconds. It was hypothesized that acids will affect the ping pong balls bounce more than bases however bases will affect the ping pong balls mass more than acids. The method is pour different acids and bases into the beakers. Take mass of the ping pong ball and how many times it bounces. Put the ping pong ball in acid or base. After done put them on the paper towel. Bounce it and get the mass. Repeat this until done. In the experiment 3 acids and 2 bases were used. Before the ping pong balls were dipped in different acids and bases it bounced 8 times and its mass was 2.25 grams. After it was dipped in Karo for 30 seconds it went up to twelve bounces however its mass went down by .15 grams to 2.1 grams. After it was dipped in disappearing ink which is a serious base it went down to 7 bounces and went down .25 grams to 2 grams. With pure vegetable oil which is an acid it went down to 5 bounces however the mass went up to 2.7 grams. When dipped in Vinegar it stayed at 8 bounces however the mass went up to 3.5 grams and when it was dipped in Ammonia for 30 seconds it went up to 9 and the mass went to 3.55 grams.
 * ABSTRACT **

=**EXPERIMENTAL IMPROVEMENTS AND FUTURE EXPERIMENTS** =

Some improvements that could be made on the experiment are, The amount of liquid that is in the beaker cold be measured more precisely instead of pouring just about the right amount. Also the amount of time the ping pong balls were in the beaker could be more precise. The experiment should not have had many ping pong balls going at once instead it should have had one at a time. Also using the same amount of acids and bases and using neutral.



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