AQA A LEVEL Chemistry EXAM
QUESTIONS AND ANSWERS 100%
SOLVED (Newest 2025) Relative atomic mass - Correct Answers ✅The average mass of an atom of an element, relative to 1/12th of the mass of an atom of Carbon-12 Relative molecular mass - Correct Answers ✅Average mass of a molecule compared to 1/12th of the mass of a carbon-12 atom The Avogradro constant - Correct Answers ✅the number of particles in a mole ideal gas equation - Correct Answers ✅pV = nRT empirical formula - Correct Answers ✅the simplest whole number ratio of atoms of each element in a compound percentage atom economy - Correct Answers ✅(Mass of desired product/total mass of reactants) x 100 ionic bonding - Correct Answers ✅the electrostatic attraction between oppositely charged ions in a lattice covalent bond - Correct Answers ✅a shared pair of electrons between non-metal elements 1 / 3
AQA A LEVEL Chemistry EXAM
QUESTIONS AND ANSWERS 100%
SOLVED (Newest 2025) co-ordinate bond - Correct Answers ✅a shared pair of electrons where both electrons are supplied by one atom repulsion in shapes of molecules - Correct Answers ✅Lone pair-lone pair > lone pair-bonding pair > bonding pair- bonding pair electronegativity - Correct Answers ✅the power of an atom to attract the pair of electrons in a covalent bond hess' law - Correct Answers ✅Total enthalpy change for a reaction is independent of the route chosen mean bond enthalpy - Correct Answers ✅The energy required to break a covalent bond into gaseous atoms averaged over different molecules Bonds broken - bonds made activation energy - Correct Answers ✅The minimum amount of energy needed to start a chemical reaction 2 / 3
AQA A LEVEL Chemistry EXAM
QUESTIONS AND ANSWERS 100%
SOLVED (Newest 2025) catalyst - Correct Answers ✅A substance that increases the rate of a chemical reaction without being changed by providing an alternative reaction pathway by lowering activation energy Le Chatelier's principle - Correct Answers ✅When a system in dynamic equilibrium is subjected to change, the position of equilibrium will shift to oppose the change.oxidising agents - Correct Answers ✅electron acceptors reducing agents - Correct Answers ✅electron donors Enthalpy of formation - Correct Answers ✅Enthalpy change when one mole of a compound is formed from its constituent elements under standard conditions in their standard states Enthalpy of atomization - Correct Answers ✅The energy required to produce one mole of gaseous atoms from an element in its standard state Electron affinity - Correct Answers ✅the enthaply change when one mole of gaseous atoms forms one mole of -1 ions
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