Mini-Quiz: Atomic Weight

1. Why did they set the atomic weight of a proton as 1 instead of its exact weight?

   The exact weight was too small to be convenientThat is correct. You know about atomic weight. Its exact weight actually is 1 kgSorry, not correct. Try another button. Because the weight of an electron is also 1Good try, but not right. Select another answer.

2. What is an isotope?

   An atom that only has neutrons in its nucleusSorry, not correct. Try another button. An atom that has lost or gained electronsOops! Wrong answer. Re-read the question and try again. An atom with different number of neutrons for that elementCorrect. You seem like a science Champion.

3. What happens to the extra mass in nuclear fission?

   It turns into mass, according to E = mc²Good try, but not right. Select another answer. It turns into energy, according to E = mc²That is correct. You know about atomic weight. Nothing, because the of Conservation of MassOops! Wrong answer. Re-read the question and try again.

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