
Caráter Ácido e Básico
Authored by VAGNER ANDRADE
Science
9th Grade

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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é o pH de uma substância ácida?
Menor que 7.
Igual a 7.
Maior que 7.
Exatamente 7.5.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Por que precisamos corrigir o pH do solo?
Para aumentar a acidez.
Para equilibrar a acidez e a alcalinidade.
Para torná-lo mais básico.
Para remover nutrientes.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a fórmula química do hidróxido de magnésio?
MgO
Mg(OH)2
MgCl2
MgSO4
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual das seguintes substâncias é um exemplo de base usada em antiácidos?
NaCl
Mg(OH)2
H2O
CO2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a relação entre a quantidade de íons H+ e a acidez de uma substância?
Mais íons H+ significa mais acidez
Mais íons H+ significa menos acidez
Mais íons H+ não afetam a acidez
Mais íons H+ tornam a substância neutra
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a cor do frasco número 4?
Verde
Vermelho
Branco
Azul
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a cor do frasco número 5?
Verde
Vermelho
Branco
Azul
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