

Fundamentos da Química
Flashcard
•
Chemistry
•
11th Grade
•
Practice Problem
•
Hard
JOSE JORGE
FREE Resource
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14 questions
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1.
FLASHCARD QUESTION
Front
O que é um átomo?
Back
A menor unidade de um elemento químico.
2.
FLASHCARD QUESTION
Front
O que é um elemento químico?
Back
Substância pura composta por átomos do mesmo tipo (ex: oxigênio, carbono).
3.
FLASHCARD QUESTION
Front
O que é uma substância simples?
Back
Formada por um único tipo de átomo, ex: O₂.
4.
FLASHCARD QUESTION
Front
O que é uma substância composta?
Back
Formada por diferentes átomos, ex: C₂H₅OH - etanol.
5.
FLASHCARD QUESTION
Front
O que representam os símbolos químicos?
Back
Elementos (ex: H para hidrogênio, O para oxigênio).
6.
FLASHCARD QUESTION
Front
O que expressam as fórmulas químicas?
Back
A composição de substâncias (ex: H₂O para água indica 2 átomos de hidrogênio e 1 de oxigênio).
7.
FLASHCARD QUESTION
Front
O que são reagentes e produtos em uma reação química?
Back
Reagentes são as substâncias que reagem, e produtos são as substâncias formadas na reação.
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