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 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 have a different taste.
It would be radioactive.

Question 2. Which number tells us which isotope we are dealing with?

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

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

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

Question 4. 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?


Question 5. 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 extra protons.
It has three less protons.

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