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Je suis Tu es Il/Elle/On est Nous sommes Vous etez Ils/Elles sont

The reactants adsorb to an active site on the surface of the catalyst. The active site places the reactants in an orientation that allows them to easily react. The reaction then occurs an...

Nebula (cloud of gas and dust)ProtostarMain sequence starRed giantWhite dwarfBlack dwarf (some students may not need to know this depending on their GCSE exam board and specification)

Expand by multiplying out the brackets (using crab claws or similar method): 18x^2 + 30x - 12x -20Simplify by combining like terms: 18x^2 + 18x -20

Descartes made a philosophical distinction between the substances of body and mind. He identified seperate essences for the mind and the body, describing the mind as a non-extended thinking thing, whilst ...