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WebGCSE Art and Design Assessment There are two parts to the Edexcel course for GCSE Art and Design. The portfolio is 60 per cent of the course and the externally set assignment … WebCalculations in chemistry (Higher) The mole is the unit for amount of substance. The number of particles in a substance can be found using the Avogadro constant. The mass of product depends upon the mass of limiting reactant. Part of. Chemistry (Single Science) Quantitative chemistry. Revise. WebChemistry (Single Science) Chemistry is the study of the composition, behaviour and properties of matter, and of the elements of the Earth and its atmosphere. Part of. Science. chercher mon appareil