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

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


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

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


Question 3. How are isotopes of an element similar to each other?

They have no similarities.
They have the same mass number.
They have the same number of protons.
They have the same number of neutrons.


Question 4. 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 numbers of electrons.
They have different atomic numbers.


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


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