Snapquiz - Isotopes

This is the Snapquiz on Isotopes. Click here or use the embedded video if you haven't watched the lesson yet.


Question 1. How is a carbon-14 atom different from a normal carbon-12 atom?

It has one extra proton.
It has two extra protons.
It has one extra neutron.
It has two extra neutrons.


Question 2. A chlorine atom contains 17 protons and 17 electrons. About 25% of chlorine atoms are the chlorine-37 isotope. How many neutrons does one of these atoms contain?

18.
20.
17.
3.


Question 3. How is a uranium-235 atom different from a uranium-238 atom?

It has three less neutrons.
It has three extra neutrons.
It has three less protons.
It has three extra protons.


Question 4. A chlorine atom contains 17 protons and 17 electrons. About 75% of chlorine atoms are the chlorine-35 isotope. How many neutrons does one of these atoms contain?

1.
17.
18.
20.


Question 5. How would a glass of water made with hydrogen-2 atoms be different to a glass of water made with hydrogen-1 atoms?

It would be slightly heavier.
It would be a different colour.
It would be radioactive.
It would have a different taste.


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