Snapquiz - Formula Mass and Moles

This is the Snapquiz on Formula Mass and Moles. Click here or use the embedded video if you haven't watched the lesson yet.


Question 1. Lithium's most common isotope has a mass number of 7 and an atomic number of 3. How many neutrons are in this type of lithium atom?

4.
10.
3.
5.


Question 2. Which number from an entry in the periodic table is the one involved in formula mass calculations?

The proton number.
The atomic number.
The biggest number.
The smallest number.


Question 3. A hydrogen atom has a relative atomic mass of 1, a carbon atom has a relative atomic mass of 12 and an oxygen atom has a relative atomic mass of 16. What's the formula mass of a CH3OH molecule?

32.
22.
24.
64.


Question 4. A carbon atom has a relative atomic mass of 12 and a hydrogen atom has a relative atomic mass of 1. What's the mass of one mole of CH4?

52g.
12g.
16g.
24g.


Question 5. What does the formula H2O mean about a water molecule?

It contains one hydrogen atom and two oxygen atoms.
It contains two hydrogen atoms and one oxygen atom.
It contains two hydrogen atoms and zero oxygen atoms.
It contains two oxygen atoms and two hydrogen atoms.


If you would like to track your scores, please enter your preferred first name into the box (please note, this uses cookies to store the data on your computer/phone/tablet - please see the FAQ for more information). Alternatively, if your teacher has given you a code starting with a # symbol, you can enter that:


Snapquiz© CJ Thornton    Terms and Conditions    Privacy
Teachers


Log out