A-LevelChemistryAtoms, molecules and stoichiometryFeb/Mar 2022Paper 1 Q141 Mark
Which statement about atoms and molecules is correct?
AThe molecular formula of a compound is the simplest whole number ratio of atoms of each element in the compound.
BOne mole of any substance contains 6 × 10²³ atoms.
CThe relative atomic mass of an element is the ratio of the average mass of one atom of the element to the mass of an atom of carbon-12.
DThe relative formula mass of a compound is the sum of the individual atomic masses of all the atoms in the formula.
✓ Correct Answer
The correct answer is D. This question tests the candidate's understanding of atoms, molecules and stoichiometry within the Chemistrysyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
🔒
Unlock the Examiner's Answer
Sign up for free to reveal the correct answer, the official mark scheme breakdown, and the examiner trap analysis for this question.
Sign Up Free to Unlock →Join thousands of Cambridge students already using Oracle Prep