Required practical Flashcards
(7 cards)
1
Q
what is the method
A
1.take temperature of acid
2.add metal powder and stir
3.record highest temperature
4.calculate temperature change
5.repeat experiment using different metal
2
Q
why must you take the temperature at the start and end of a reaction
A
to work out temperature change
3
Q
why must you stir the mixture of metal powder and acid
A
to make sure reactants are completely mixed
4
Q
what is the independent variable
A
metal
5
Q
what is the dependent variable
A
temperature change
6
Q
what is the control variable
A
volume/ concentration of acid
7
Q
what is the hazard in the experiment
A
low risk of a corrosive acid damaging eye, so goggle must be worn
