
REC2 QUÍMICA 1º ANO
Authored by MARIANA BRAGA
Science
1st Grade
Used 8+ times

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11 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
É correto afirmar sobre a partícula fundamental do átomo de carga elétrica positiva que:
Localiza-se na eletrosfera
Possui carga elétrica oposta a do nêutron
Chama-se próton
Possui massa desprezível
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Quais são as principais partículas subatômicas?
Átomos, moléculas e prótons.
Nêutrons, prótons e elétrons.
Prótons, nêutrons e núcleos.
Alfa, beta e gama
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Determine o número de prótons presente no núcleo do átomo de Carbono.
12
18
6,011
6
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Indique o número de elétrons presente na eletrosfera do átomo de potássio.
39
20
19
58
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A fórmula química da sacarose, o açúcar comum, é C12H22O11. Há quantos elementos químicos diferentes nessa substância?
45
3
12
22
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Ao lado estão representadas moléculas do gás ozônio. Indique quantos átomos de oxigênio aparecem no esquema e quantas moléculas do gás ozônio respectivamente:
5 átomos e 15 moléculas
5 átomos e 5 moléculas
15 átomos e 5 moléculas
5 átomo e 1 molécula
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Quantos elementos existem atualmente na tabela periódica?
92
110
118
130
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