Snapquiz - Percentage Mass

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


Question 1. Which of these numbers is the only one which could be a correct answer when calculating a percentage on a foundation level GCSE Science paper?

500%.
64%.
-10%.
170%.


Question 2. What is two as a percentage of five?

40%.
30%.
50%.
60%.


Question 3. A hydrogen atom has a relative atomic mass of 1 and an oxygen atom has a relative atomic mass of 16. What's the mass of all the oxygen atoms in an H2O molecule?

32.
16.
2.
1.


Question 4. What is one twentieth as a percentage?

50%.
15%.
5%.
10%.


Question 5. 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 all the carbon atoms in a C3H8 molecule?

24.
36.
24.
48.


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