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poster yourself
have you ever tried to light an bonfire or a camp fire? which burns more quickly than a block wood or a pile of wood shavings we find that small pieces of solids especially powders react faster than large pieces its like a frying pan of chips?one has potataoe cut into small thin chips. the other pan has thicker chips. which chips will be cooked first? which chips have the larger surface? surface area is a measure of how much surface area is exsposed.so for th same mass of patatoe small chips hav a larger surface area
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