a study of alka-seltzer in different types of liquids abstract introduction

Temperature of water (c)
80
70
60
50
40
30
20
10
0
0 20 40 60 80 100
Time taken to dissolve (sec)
Figure 7: How long the Alka-Seltzer took to dissolve in different temperatures (c) of water.
It was found that Alka-Seltzer dissolves a lot quicker in hot water, as the molecules are moving
around franticly in hot water, so that speeds up the Nucleation process and pull the Alka-Seltzer
apart. The molecules move quicker because hot water is normal water, but with heat energy
added in. The heat adds increases the kinetic energy for the molecules, making them move
quicker. However in cold water, the molecules have the cold energy added onto them, reducing
the kinetic energy kinetic energy for the molecules therefore slowing them down. In normal
temperature (room temperature) the molecules are balanced out and it dissolves them at a
normal rate of about 20 sec.
CONCLUSION
It was found that Alka-Seltzer dissolves the quickest in hot water, over the other materials
tested, this is due to the fact that Alka-Seltzer is manufactured to dissolve in water and to
dissolve quickly. This data could be helpful for those who have an upset stomach, heartburn, or
headache, Alka-Seltzer dissolves the fastest in hot water, this is useful for those who want to be
able to drink the Alka-Seltzer quick, however room temperature water is also about as good, for
those who can wait and don’t want to burn themselves. The results were not surprising as the
Alka-Seltzer was made to be put into water, and heat adds on a second energy source for the
molecules, speeding the molecules up. In the future it would be interesting to determine if the
Alka-Seltzer dissolves quicker or slower when put into a compound liquid like hydroxide, or if
the Alka-Seltzer was put into a liquid combination to see if the compound changes the speed of
which an Alka-Seltzer dissolves.
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