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. What needs to be true about a chemical equation before we can calculate percentage mass?

It needs to be labelled.
It needs to be converted into a word equation.
It needs to be balanced.
It needs to be reversible.


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

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


Question 3. How many hydrogen atoms are there in the compound C2H5OH?

6.
5.
4.
7.


Question 4. 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?

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


Question 5. Which number goes on the bottom of your fraction when you're calculating a percentage on a foundation level GCSE Science paper?

100%.
The numerator.
The small number.
The large number.


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