Isotopes Practice Quiz
5 Questions
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A 5-question practice quiz for the topic on Isotopes at www. Thechemwhiz. Piczo. Com Note: you'll need a calculator.
Questions and Answers
- 1.In an isotope, which part of the atom changes?
- A.
Protons
- B.
Neutrons
- C.
Electrons
- 2.How does it change?
- A.
They're not there anymore.
- B.
They move to a different place.
- C.
There are different numbers of them.
- 3.Calculator time! 19.9% of all Boron atoms are Boron-10. 80.1% are Boron-11. Calculate the approximated relative atomic mass of Boron, to one decimal place.
- 4.Magnesium has three of it's own isotopes. 78.7% is Magnesium-24. 10.13% is Magnesium-25. 11.17% is Magnesium-26. Calculate the relative atomic mass of Magnesium, to two decimal places.
- 5.
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