WORKSHEET #36  Because some elements have different isotopes. This means the same atom has different numbers of neutrons.

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Presentation transcript:

WORKSHEET #36

 Because some elements have different isotopes. This means the same atom has different numbers of neutrons.

Percentage of category Score Percentage (as decimal) x Score Tests 75%8060 Classwork 25% Final Grade Add the last column to get answer 82.5

Percentage of isotope Mass number of isotope Percentage (as decimal) x Mass Hydrogen-1 99%1.99 Hydrogen-2 0.8%2.016 Hydrogen-3 0.2%3.006 Average Atomic Mass Add the last column to get answer 1.012

Iodine Average Atomic Mass = Nitrogen Average Atomic Mass = Cesium Average Atomic Mass =

In your body, there are 3 types of carbon. Carbon-12, carbon-13 and carbon-14. The most abundant is carbon-12 at 98%, carbon- 13 at 1%, and carbon-14 at 1%. What is the average atomic mass for carbon? 2 points for correct answer 3 points for work