Chemistry unit 1

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what is exothermic reaction
energy is given to the surroundings so enthaly change is negative, the substance heats up and bonds are broken
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what is endothermic
energy is taken in from surroundings ans enthaply chnage is positive, the subsatnce cools down and new onds are formed
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standard conditions
298k or 25degres at i atmospheric pressure
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how do you measure enthalpy change
mcat over n
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how to do out an enthapoly change reaction
weigh out mass of known sunstance, measure th volume of the solution with a burtette, add the solution to the calorimieter, record temp every 30 seconds for 2 mins to allow intitail temo to be recorded, add substance, plot graph, extrapolate
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Card 2

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what is endothermic

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energy is taken in from surroundings ans enthaply chnage is positive, the subsatnce cools down and new onds are formed

Card 3

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standard conditions

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Card 4

Front

how do you measure enthalpy change

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Card 5

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how to do out an enthapoly change reaction

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