
Recuperação da 1° Prova - Química 1TRI
Quiz
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Chemistry
•
Professional Development
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Practice Problem
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Medium
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1) Qual dos elementos químicos abaixo é o mais reativo? Observe a ordem de reatividade dos metais:
Li > K > Ca > Na > Mg > Al > Zn > Cr > Fe > Ni > Sn > Pb > H > Cu > Hg > Ag > Au
Au
K
Fe
H
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Consulte a tabela periódica e selecione, dentre as opções, os metais.
C
O
Ag
S
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Utilizando a fila de reatividade, indique qual das reações de simples troca mostradas a seguir não ocorre:
Cu + NiCl2 → CuCl2 + Ni.
Zn + CuSO4 → ZnSO4 + Cu.
Ni + CuSO4 → NiSO4 + Cu.
Cu + 2 AgNO3 → Cu(NO3)2 + 2 Ag.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Os números de oxidação do cromo e do manganês nos compostos CaCrO4 e KMnO4, são respectivamente:
+ 6 e +7
-6 e -6
+6 e +6
-2 e -2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é o número de oxidação do enxofre no composto H2SO4?
+2
+4
+6
+8
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