
Química: Modelos e Ligações Atômicas
Authored by Leonardo Henrique Martis Lima
Science
9th Grade
Used 3+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual modelo atômico foi proposto por Niels Bohr, que descreve os elétrons em órbitas ao redor do núcleo?
Modelo de Dalton
Modelo de Rutherford
Modelo de Bohr
Modelo de Thomson
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
No modelo atômico de Rutherford, o átomo é composto por:
Núcleo positivo e elétrons em órbitas circulares
Esfera maciça e indivisível
Nuvem de elétrons ao redor do núcleo
Prótons e nêutrons misturados uniformemente
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2, 6
2, 8
8, 2
6, 2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A ligação covalente ocorre quando:
Um átomo doa elétrons para outro
Dois átomos compartilham pares de elétrons
Elétrons são transferidos para o núcleo
O núcleo é compartilhado entre átomos
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual das opções abaixo é um exemplo de ligação iônica?
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A escala de pH é utilizada para medir:
A quantidade de elétrons em um átomo
A acidez ou basicidade de uma solução
A massa de um elemento
A energia de ligação
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Uma solução com pH igual a 2 é considerada:
Neutra
Básica
Ácida
Salina
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