Grace+G13

Grace G 2012 - 2013
 * THE PH LEVELS OF DISAPPEARING INKS **

The first experiment’s purpose was to find out which disappearing ink was more basic. Disappearing ink was left sitting out for a 24 hours, 30 minutes, 5 minutes, and 0 minutes (not left sitting out). The hypothesis made for this experiment was the disappearing ink left sitting for a whole day would have a more basic pH level after the 24 hours had passed. To find out if this hypothesis was correct, 25 mL of disappearing ink was left in a beaker to sit out for a whole day. After a whole day had passed, the pH probe and pH strips were used to find the pH of the substance. Red and blue litmus papers were also used to find out if the ink was a base or acid. Next, another 25 mL of disappearing ink was left sitting out for five minutes and then tested the same way as the one day ink. After this, another 25 mL of disappearing ink was tested the same way as before; this disappearing ink was not left to sit out. Afterward, the disappearing ink left sitting out for an hour was tested the same way. All variables were tested twice. It was found the ink not left out at all had the most basic pH using the pH probe, and the ink left out for 5 minutes had the most basic pH using the pH strips.
 * ABSTRACT **

An experimental improvement for this first experiment could be to test the disappearing ink left sitting out for one day and the disappearing ink left sitting out for an hour twice because this could make the results more accurate. Future experiments done could be to test how long it takes for disappearing ink to freeze and to test if playing with disappearing ink affects stress level.
 * EXPERIMENTAL IMPROVEMENTS ****AND ****FUTURE EXPERIMENTS **

For further reading of this experiment press on the PDF link below.