
Ligações Químicas
Authored by Cezar Tadler
Chemistry
10th Grade
Used 26+ times

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11 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 8 pts
Qual das moléculas a seguir é apolar e tem ligações covalentes polares?
H2
H2O
CO2
SO2
2.
MULTIPLE CHOICE QUESTION
45 sec • 5 pts
Com quantos elétrons de valência fica o oxigênio na molécula de ácido hipobromoso (HBrO)?
2
4
6
8
3.
MULTIPLE CHOICE QUESTION
45 sec • 5 pts
Quando o sódio (Na) se liga com o enxofre (S) a fórmula resultante é:
NaS
Na2S
NaS2
Na2S2
4.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Na estrutura do sulfato de potássio (K2SO4) é incorreto afirmar que
O potássio se liga diretamente ao oxigênio.
O enxofre é o átomo central.
As ligações covalentes da estrutura são apolares.
O potássio faz ligação iônica com o oxigênio.
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Quem é o átomo central na estrutura do bicarbonato de sódio (NaHCO3)?
Na
H
C
O
6.
MULTIPLE CHOICE QUESTION
1 min • 7 pts
A única molécula polar das opções a seguir é:
NH3
CO2
SO3
BF3
7.
MULTIPLE CHOICE QUESTION
45 sec • 7 pts
Qual das fórmulas a seguir tem somente ligações covalentes polares?
NaBr
H2S
KNO3
CaSO4
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