
Representação simbólica de átomos e moléculas
Authored by Tiago Sousa
Chemistry
8th Grade
Used 16+ times

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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual dos seguintes é um símbolo químico?
AL
cO
b
Be
Answer explanation
Um símbolo químico é sempre constituído por uma ou duas letras. A primeira letra é sempre maiúscula e a segunda, se existir, é sempre minúscula.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual dos seguintes é o símbolo químico do magnésio?
Mg
Ma
MG
M
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O símbolo químico do fósforo é...
F
Fo
P
Ph
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Na é o símbolo químico do...
... enxofre.
... sódio.
... cálcio.
... nitrogénio.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual das representações está correta para 2 átomos de carbono?
2 Ca
Ca2
2 C
C2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual das representações está correta para 3 moléculas de nitrogénio?
3 N
3 N2
2 N3
N2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2 Ca representa...
... 2 moléculas de cálcio.
... 2 átomos de cálcio.
... 2 átomos de carbono.
... 2 moléculas de carbono.
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