Exam-style practice

Chemical measurements, conservation of mass and the quantitative interpretation of chemical equations answer explanations

Review worked answers and explanations for Chemical measurements, conservation of mass and the quantitative interpretation of chemical equations. Aligned to AQA Gcse Chemistry.

282

Questions

Supported

Review

Mode

Quantitative

Topic

Answer explanations

Question 281 of 282

Review the answer support, then move sideways through the set.

0 of 1 attempted

a. Calculate Consider the reaction: CaCO₃ → CaO + CO₂ Calculate the total relative formula mass (Mr) of the reactants and the total relative formula mass (Mr) of the products. Show your working. (Relative atomic masses: Ca = 40, C = 12, O = 16) [4 marks] b. Explain What does your answer to part (a) demonstrate about the conservation of mass in this reaction? [2 marks]

← Previous