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Cincias Fsico-qumicas Tipos de reaces qumicas 8. ano
Nome:____________________________________________________________Data:
__________
1. Diz algumas transformaes qumicas que ocorrem nossa
volta.R:______________________________________________________________________________
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2. D um exemplo de transformaes qumicas que ocorrem por:2.1. aco
do
calor.R:___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
2.2. aco
mecnica.R:___________________________________________________________________________
___________________________________________________________________________
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2.3. aco da corrente
elctricaR:___________________________________________________________________________
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3. Como podem facilmente ser detectadas as transformaes
qumicas?R:______________________________________________________________________________
______________________________________________________________________________
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3.1. D um exemplo para cada um dos efeitos observados quando
ocorre uma transformaoqumica.
R:___________________________________________________________________________
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4. Define:4.1.
reagente.R:___________________________________________________________________________
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4.2. produto de
reaco.R:___________________________________________________________________________
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4.3.
combustvel.R:___________________________________________________________________________
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4.4.
comburente.R:___________________________________________________________________________
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Bom trabalho!
