Welcome to your Quantitative Chemistry Quiz for GCSE Chemistry

1. 
If you have 0.2 moles of magnesium (Mg), how many moles of oxygen (O2) are needed to completely react with it in a balanced chemical reaction?

2. 
Which of the following is a balanced chemical equation for the reaction between hydrogen gas (H2) and oxygen gas (O2) to produce water (H2O)?

3. 
What is the formula mass of calcium carbonate (CaCO3)?

4. 
What is the chemical formula of sulfuric acid?

5. 
In a titration experiment, the substance in the burette is slowly added to the substance in the flask until the reaction is complete. What is the point at which the reaction is complete called?

6. 
If you have 0.5 moles of oxygen molecules (O2), how many oxygen atoms are there?

7. 
How many moles of water (H2O) are in 18 grams of water?

8. 
How many grams are there in one mole of carbon-12 atoms?

9. 
What does the term "empirical formula" represent in chemistry?

10. 
What is the term for the number of particles (atoms, ions, or molecules) in one mole of a substance?

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