energy transfers

  • Created by: jessicate
  • Created on: 16-05-18 18:42
equipment used
metal powder, thermometer, polystyrene cup, pyrex beaker, hydrochloric acid.
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step one
set up the equipment as shown. (put the cup inside the beaker and fill the cup with hydrochloric acid. use a thermometer to measure the temperature change once the metal powder is added)
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step two
take the temperature of the acid
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step three
add the metal powder and stir
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step four
record the highest temperature the reaction mixture reaches
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step five
calculate the temp. change for the reaction.
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step six
repeat the experiment using a different metal
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considerations, mistakes and errors
there should be a correlation between the reactivity of the metal and the temp. change. i.e. the more reactive the metal, the more the temp. change.
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considerations, mistakes and errors
during measuring there is always uncertainty of the accuracy of the results. if three measurements are taken then a mean can be found.
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indipendant variable.
the metal used
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dependant variable
temperature change
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control variable
type, concentration and volume of acid.
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hazards and risks
there is a low risk of corrosive acid damaging the experimenter's eye, so eye protection must be used.
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Other cards in this set

Card 2

Front

set up the equipment as shown. (put the cup inside the beaker and fill the cup with hydrochloric acid. use a thermometer to measure the temperature change once the metal powder is added)

Back

step one

Card 3

Front

take the temperature of the acid

Back

Preview of the back of card 3

Card 4

Front

add the metal powder and stir

Back

Preview of the back of card 4

Card 5

Front

record the highest temperature the reaction mixture reaches

Back

Preview of the back of card 5
View more cards

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