
Atomos e íons
Science
1st Grade
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O símbolo para o íon Zn²+ indica que:
I. é um cátion;
II. possui dois prótons a mais que o respectivo átomo neutro;
III. ganhou dois elétrons em relação ao átomo neutro;
Assinale a alternativa que indica as afirmações corretas:
I
II
III
I e II
II e III
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
o íon apresenta:
10 prótons e 13 elétrons
14 prótons e 13 elétrons
13 prótons e 10 elétrons
13 prótons e 13 elétrons
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O nome que se dá ao íon carregado negativamente é
Cátion
Anodo
Próton
Ânion
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quando se compara o átomo neutro do enxofre com o ion S²-, verifica-se que o íon possui:
um elétron a mais
dois prótons a mais
dois elétrons a mais
dois elétrons a menos
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Qual o número de massa (A) de um átomo de cálcio (Z = 20) com 20 nêutrons?
20
10
30
40
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Quais são as principais partículas subatômicas?
átomos, moléculas e prótons.
Nêutrons, prótons e elétrons.
Prótons, nêutrons e núcleos.
Alfa, beta e gama
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Determine o número de prótons presente no núcleo do átomo de Carbono.
12
18
6,011
6
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