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 are isotopes of an element similar to each other?

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


Question 2. 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?

17.
18.
1.
20.


Question 3. How is a deuterium atom different from a hydrogen atom?

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


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

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


Question 5. How is a carbon-14 atom different from a normal carbon-12 atom?

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


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