Átomos, moléculas e representação química
Authored by Armanda Carneiro
Chemistry
8th Grade
Used 24+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
No núcleo dos átomos estão:
protões e eletrões.
protões e neutrões.
eletrões e neutrões.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Os protões são partículas com carga elétrica positiva.
Verdadeiro.
Falso.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Os eletrões têm carga negativa.
Falso.
Verdadeiro.
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Os átomos são partículas neutras porque...
apresentam igual número de protões e de neutrões.
têm neutrões.
apresentam o mesmo numero de eletrões e de protões.
apresentam o mesmo número de eletrões e de neutrões.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Como se representam os símbolos químicos?
Através de uma ou duas letras maiúsculas
Através de uma ou duas letras minúsculas.
Uma letra maiúscula
A primeira letra maiúscula e se houver uma segunda tem de ser minúscula.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é o símbolo químico do cálcio?
cA
CA
Ca
ca
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é o significado de: 2H
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