
Identificação do átomo-RAD-2025
Authored by DOMINGAS CARDOSO DA SILVA
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12 questions
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1.
OPEN ENDED QUESTION
30 sec • Ungraded
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2.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
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3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é o principal número que caracteriza um elemento químico?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Um átomo tem 11 prótons e 10 elétrons. Esse átomo é:
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O átomo de um elemento químico ao perder dois elétrons, forma um cátion contendo 36 elétrons. Analise as afirmações sobre este cátion: I - Seu número atômico é 38. II - Trata-se do criptônio. III - O cátion é o Sr²⁺ IV - O cátion é o Sr²⁻ São verdadeiras as opções:
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Analise as seguintes afirmativas: I - Isótopos são átomos de um mesmo elemento químico. II - Possuem o mesmo número atômico. III - Possuem diferentes números de nêutrons no núcleo. IV - Possuem diferentes números de prótons. São corretas apenas:
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual das alternativas abaixo apresenta, nessa ordem, um elemento, uma substância simples, uma substância composta e um íon? I - H₂, Ne, HI, Na⁺ II - H⁺, H₂, H₂O, H⁺ III - SO, NO, H⁺, Ne IV - Ar, O₃, SO₂, Cl⁻ V - H⁻, N₂, S₈, I⁻
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