
Funções Químicas e pH
Science
9th Grade

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11 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual das alternativas abaixo representa corretamente a definição de ácido segundo Arrhenius?
Substância que libera elétrons em solução aquosa.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual das opções abaixo é um exemplo de base?
HCl
NaOH
NaCl
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O que caracteriza um sal?
É formado pela reação entre ácido e base.
É formado pela reação entre dois ácidos.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O pH de uma solução é 3. Isso indica que a solução é:
Neutra
Ácida
Básica
Salina
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A reação de neutralização ocorre entre:
Dois ácidos
Um ácido e uma base
Dois sais
Um óxido e um sal
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual das alternativas abaixo é um sal?
NaCl
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O pH de uma solução básica é:
Menor que 7
Igual a 7
Maior que 7
Sempre igual a 14
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