Gcse Aqa Chemistry: Paper 1 Study Guide Questions And Correct Answers

Method of separation for Two miscible liquids (liquids that mix) {Ans: Fractional Distillation (see image)}Diamond structure {Ans: *Giant covalent lattice* where each carbon is bonded to *4* others in a *tetrahedral* arrangement}Atomic mass vs Atomic number {Ans: Atomic mass: The sum of protons and neutrons (bottom) Atomic number: a unique number of protons = electrons (if atom) (top)}Temperature {Ans: Average energy per particle}Chemical energy/Enthalpy vs Thermal energy {Ans: Chemical energy: Energy that is stored in chemical bonds Thermal energy: Particles vibrate/translate/rotate/e⁻ move around nucleus}Reason for nanoparticles behaving differently to bulk {Ans: Behave differently as the increased surface area: volume ratio means that there are more particles on the surface which can react, and they tend to clump together.}