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 tritium atom different from a hydrogen atom?

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


Question 2. How is a uranium-235 atom different from a uranium-238 atom?

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


Question 3. 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 have a different taste.
It would be slightly heavier.
It would be a different colour.
It would be radioactive.


Question 4. Which number tells us which isotope we are dealing with?

The proton number.
The electron number.
The atomic number.
The mass number.


Question 5. How are isotopes of an element different from each other?

They have different numbers of protons.
They have different numbers of neutrons.
They have different atomic numbers.
They have different numbers of electrons.


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