
Chemistry Activity
Chemistry
1st Grade

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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O número atômico (Z) representa:
O número total de partículas no núcleo
O número de nêutrons no núcleo
O número de prótons no núcleo
O número de elétrons em órbita
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A massa atômica de um elemento é:
O número de elétrons no núcleo
A média ponderada das massas dos isótopos
O número total de prótons
O número de nêutrons e prótons juntos
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A fórmula química H2O representa:
Substância simples
Substância composta
Elemento químico
Átomo puro
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O que caracteriza uma substância simples?
Composta por diferentes tipos de átomos
Formada por um único tipo de átomo
Sempre líquida à temperatura ambiente
Pode ser quebrada em substâncias compostas
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é um exemplo de substância orgânica?
Água H2O
Cloreto de sódio NaCl
Metano CH4
Amônia NH4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O que é uma substância inorgânica?
Contém carbono
É derivada de organismos vivos
Não tem o carbono como elemento principal
Sempre está no estado gasoso
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What characterizes a compound substance?
Formed by only one type of molecule
Composed of more than one type of atom
Can be separated by simple physical processes
Always in a solid state
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