
7FQ | Revisões
Authored by Paulo 510
Chemistry
7th Grade
Used 3+ times

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18 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
A dissolução de sal na sopa é uma ...
... transformação química
... uma transformação física
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
A evaporação da água é uma ...
... transformação química
... transformação física
3.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
Qual dos seguintes esquemas de palavras traduz uma reação química?
água + sal → água salgada
água + açúcar → água açucarada
carne crua → carne assada
água (s) → água (g)
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Uma substância é um material constituído por...
2 componentes
3 componentes
apenas 1 componente
2 ou mais componentes
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Uma mistura é um material constituído por...
apenas 1 componente
2 ou mais componentes
mais de 3 componentes
oxigénio
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
As soluções são...
solventes
misturas heterogéneas
substâncias
misturas homogéneas
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Para os químicos, a designação de “puro” aplica-se...
a qualquer produto químico
a qualquer produto não adulterado/contaminado
apenas às substâncias
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