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 the following is a use of calculating percentage mass?

Using experimental data to calculate the chemical formula of a compound.
Using experimental data to find which elements are in a compound.
Using experimental data to predict which compounds we'll produce.
Using experimental data to tell two compounds apart from each other.

Question 2. 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 3. Which number goes on the bottom of your fraction when you're calculating a percentage on a foundation level GCSE Science paper?

The small number.
The numerator.
The large number.

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 percentage mass of all the carbon atoms in a CH4 molecule?


Question 5. What is one twentieth as a percentage?


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