This question is about methods of treating water. (a) Chlorine is used to kill microorganisms in water. When chlorine is added to water a chemical reaction ...

Quantitative Chemistry. R/A/G. Chemical measurements, conservation of mass and the quantitative interpretation of chemical equations.

(ii) Explain the effect on the atom economy of this reaction if the carbon dioxide produced was used to make fizzy drinks. (Total for question = 5 marks) ...

1.0 This question is about carbonates. 1.1 Sodium carbonate, Na2CO3, is used as a water softener. Give the number of atoms of each type in sodium carbonate.

1.0 This question is about carbonates. 1.1 Sodium carbonate, Na2CO3, is used as a water softener. Give the number of atoms of each type in sodium carbonate.

For more awesome GCSE and A level resources, visit us at www.savemyexams.co.uk. Page 1. Quantitative Chemistry. Question Paper. Level. GCSE. Subject. Chemistry.

What is the law of conservation of mass? 2. Why might some reactions appear to show a change in mass? 3. Give two examples of a reaction where a change in ...

Write the equation for when magnesium reacts with oxygen. What happens to the mass of the product from the question above? % mass = Ar × number of atoms × 100.

Balanced chemical equations. • Conservation of mass. Page 12. Chemical measurements – QuestionIT. 1. What is the law of conservation of mass? Mass of reactants ...

Summary notes, revision videos and past exam questions by topic for AQA Chemistry GCSE Topic 3 - Quantitative Chemistry.