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


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?

3.
20.
17.
18.


Question 3. Which number tells us which isotope we are dealing with?

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


Question 4. How are isotopes of an element similar to each other?

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


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


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