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CF 7 – E
 FQ    Exercíc - Materiais
             cios        s
A Q
   Química.  Transfor
                    rmações 
                            e Mistur
                                   ras 
 
 
 
Exeercício 1 
             
Colo as pala
   oca     avras pela o
                      ordem corre
                                ecta, de form a teres uma frase s
                                            ma        u         sobre a impo
                                                                           ortância da química.


para
   a             o         e                              Química          sociedade
                                     fund
                                        damental                                             A

    da
     a         Ho
                omem           uma        ciência         é         desenv
                                                                         volvimento     do


 
 
 
 
 
Exe
  ercício 2 
            
Os ccientistas, e em particu os quím
                           ular      micos e os f
                                                físicos, são muito metó ódicos no seu trabalho A sua atit
                                                                                             o.         tude,
peraante um fen nómeno obs servado e q despert a sua at
                                     que        tou         tenção, seg uma sé de pass logicamente
                                                                       gue        érie       sos
rela
   acionados. O conjunto desses pa   assos consttitui o método científic Alguém trocou toda
                                                                       co.                    avia a orde a
                                                                                                        em
esse passos; coloca-os t agora, pe devida o
    es                     tu,        ela       ordem.



    A    Organizaç dos dado acumulad
                 ção      os       dos

    B    Resposta ao problema ou escolha de novas hipóteses
                            a          a

    C    Experimentação para confirmação da hipótese
                                       o           e

    D    Formulaçã de hipóte
                 ão        eses

    E    Registo preciso dos fa
                              actos observ
                                         vados e dado recolhidos
                                                    os         s

    F    Observaç cuidados da ocorrên
                ção      sa         ncia ou do ob
                                                bjecto a ser estudado
                                                             e

    G    Hipótese confirmada o não confir
                             ou         rmada
Exercício 3 
Escreve nos círculos as letras, conforme se trata de uma transformação física ou química.




               Transformação
                  química



                                                      Transformação
                                                          física




    A – Manteiga a derreter numa frigideira.                 F – Bolo a cozer no forno
    B – Vela a arder                                         G – Água a ferver
    C – Fotossíntese numa planta exposta ao sol              H – Acender o fósforo
    D – Copo de vidro a partir                               I – Dissolver sal na água
    E – Alguém a escrever a lápis numa folha de papel        J – Um isqueiro aceso


Exercício 4 
Usando os símbolos indicados, identifica as misturas que te são dadas, em misturas homogéneas,
heterogéneas e coloidais.



            Mistura                       Mistura                 Mistura
          homogénea                     heterogénea               coloidal




               ∆                            □                  O
           A    Gás natural
           B    Tintura de iodo
           C    Flocos de cereais e leite
           D    Perfume
           E    Chantily
           F    Vinagre e azeite
           G    Fumo
           H    Aço
           I    Água e petróleo
           J    Iogurte
 

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Cfq7 exercicios1

  • 1.         CF 7 – E FQ Exercíc - Materiais cios s A Q  Química.  Transfor rmações   e Mistur ras        Exeercício 1    Colo as pala oca avras pela o ordem corre ecta, de form a teres uma frase s ma u sobre a impo ortância da química. para a o e Química sociedade fund damental A da a Ho omem uma ciência é desenv volvimento do           Exe ercício 2    Os ccientistas, e em particu os quím ular micos e os f físicos, são muito metó ódicos no seu trabalho A sua atit o. tude, peraante um fen nómeno obs servado e q despert a sua at que tou tenção, seg uma sé de pass logicamente gue érie sos rela acionados. O conjunto desses pa assos consttitui o método científic Alguém trocou toda co. avia a orde a em esse passos; coloca-os t agora, pe devida o es tu, ela ordem. A Organizaç dos dado acumulad ção os dos B Resposta ao problema ou escolha de novas hipóteses a a C Experimentação para confirmação da hipótese o e D Formulaçã de hipóte ão eses E Registo preciso dos fa actos observ vados e dado recolhidos os s F Observaç cuidados da ocorrên ção sa ncia ou do ob bjecto a ser estudado e G Hipótese confirmada o não confir ou rmada
  • 2. Exercício 3  Escreve nos círculos as letras, conforme se trata de uma transformação física ou química. Transformação química Transformação física A – Manteiga a derreter numa frigideira. F – Bolo a cozer no forno B – Vela a arder G – Água a ferver C – Fotossíntese numa planta exposta ao sol H – Acender o fósforo D – Copo de vidro a partir I – Dissolver sal na água E – Alguém a escrever a lápis numa folha de papel J – Um isqueiro aceso Exercício 4  Usando os símbolos indicados, identifica as misturas que te são dadas, em misturas homogéneas, heterogéneas e coloidais. Mistura Mistura Mistura homogénea heterogénea coloidal ∆ □ O A Gás natural B Tintura de iodo C Flocos de cereais e leite D Perfume E Chantily F Vinagre e azeite G Fumo H Aço I Água e petróleo J Iogurte