The Effect of Different Isotopes on Atomic Mass (Chemistry Lab)

The Effect of Different Iso fleetes on Atomic Mass Introduction An isotope is a variation of an pinpoint that already exists. An isotope is polar from an atom because of the rate of neutrons in its nucleus. purpose the amount of neutrons in an atom rump be imagined by subtracting the nuclear figure of a specific atom from its atomic push-down store. When looking at the hebdomadary table, the atomic draw in the top left corner of every loge is a ten-fold. The plurality is in ten-fold format because the number listed is an intermediate of that atom, cocksure all of its isotopes.Isotopes consume distinguishable plenty because neutrons weigh 1 amu where as an electrons exercising weight would be negligible. The experiment described infra shows how including all isotopes of maven division force the reasonable atomic piling of the element. Materials 1. computing device 2. Whitium ensample 3. Brownium sample 4. Blackium sample 5. 3 plastic shapes 6. Electron ic balance 7. data table Procedure 1. Separate the whitium, brownium, and blackium samples from to each one other. 2. Find the megabucks of 1 cup with the electronic balance. 3.Put the opposite samples in sieve cups and count the number of bonces in each cup write those meter in the data table. 4. Find the count number of beans. 5. Find the mint candy of each cup of beans (using the electronic balance) and subtract the mount of the cup. lay aside these numbers racket in the data table. 6. distinguish the mass of each sample by its respective amount of beans to find the average mass of one bean. Write these numbers in the data table. 7. Divide the number of beans from 1 sample by the tally number of beans to find the part of the total that that particular isotope takes up.Do this for each of the samples. Record these numbers in the data table. 8. To find the average atomic mass of beanium, use the hobby formula percent of balckium atomsaverage mass of blackium percent of brownium atoms average mass of brownium +percent of whitium atoms average mass of whitium atomic mass of beanium Record this number in the data table. Results Isotope Number of beans (atoms) Mass of beans (g) intermediate mass of one bean (g) Percent of beans Average atomic mass of beanium Blackium 293 65. 8 . 224 62. 7% . 43 gBrownium 104 62. 5 . 60 22. 3% Whitium 70 69. 2 . 99 15% Total 467 To calculate the ploughshare of beans Number of Beans of 1 IsotopeTotal Number of Beans To calculate the atomic mass of beanium percent of balckium atomsaverage mass of blackium percent of brownium atoms average mass of brownium +percent of whitium atoms average mass of whitium atomic mass of beanium Conclusion In conclusion, an isotope is a variation of an element that already exists. It is different because it has more(prenominal) or less neutrons in its nucleus.Depending on how many isotopes one element has, the average atomic mass testament change. When calculating the aver age atomic mass, you must include all of the isotopes which moderate more or less neutrons than the original element. Since neutrons remove a mass of 1amu, the isotopes masses forget vary, thus affecting the average atomic mass of an element. When performing this experiment, the mass of the beans were measurable while the number of beans, average mass and percent of beans had to be calculated. The average mass of he beans, or isotopes, was a decimal because the weight of the beans in one sample divided by the number of beans of the alike(p) sample was not an even number. This science laboratory simulates the various isotopes of an element because all of the beans were in the same family however, they all looked different and had different masses. This is an example of how real elements have isotopes that may not look alike or have the same mass, but theyre still a part of that one element. As this experiment may have gotten the results shown above, when performing this exper iment a cooperate time, the results may vary.This is because not every bean is identical. If larger samples are used thusly the difference may be little because the larger the sample you have to bat with, the closer your average will be to the actual mass. 1 source of hallucination in this experiment may have been miscounting the number of beans. This may change the results of the 2, 4, and 5 columns of the data table. Another source of shift may have been miscalculating the average mass of one bean. This would affect the answer for the atomic mass of beanium.