
Óxidos
Authored by Gerson Ito
Science
9th - 12th Grade
Used 5+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O que caracteriza um óxido na química inorgânica?
Answer explanation
Óxidos são compostos binários onde um dos elementos é o oxigênio (geralmente com NOX -2).
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual das opções abaixo apresenta somente óxidos considerados básicos?
Answer explanation
Óxidos básicos são formados por metais alcalinos ou alcalino-terrosos.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sobre os óxidos anfóteros, podemos afirmar que:
Answer explanation
Óxidos anfóteros reagem tanto com ácidos quanto com bases. Ex: ZnO, Al₂O₃.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual das alternativas corresponde a óxidos neutros que não reagem com ácidos nem com bases?
Answer explanation
Óxidos neutros não reagem nem com ácidos nem com bases (ex: NO, CO, N₂O).
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sobre os óxidos ácidos, selecione a afirmativa correta:
Answer explanation
Óxidos ácidos reagem com água formando ácidos. Ex: CO₂ + H₂O → H₂CO₃.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Um exemplo de óxido duplo, que pode ser visto como a união de dois óxidos diferentes do mesmo metal, é:
Answer explanation
Fe₃O₄ = FeO + Fe₂O₃ → óxido duplo (mistura de dois óxidos de ferro).
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Peróxidos e superóxidos podem ser diferenciados principalmente pelo:
Answer explanation
No peróxido o oxigênio tem NOX -1; no superóxido, NOX é -½.
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