The Law of Conservation of Mass (Leaving Cert Chemistry): Quizzes
📚Quizzes
Practise the questions
11 questions from this quiz
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Practise the questions
11 questions from this quiz
Who is recognised as a founder of modern analytical chemistry?
Who is recognised as a founder of modern analytical chemistry?
Antoine Lavoisier
In what year did Lavoisier conduct his historic mercury experiment?
In what year did Lavoisier conduct his historic mercury experiment?
1774
What red powder did mercury form when heated in Lavoisier's experiment?
What red powder did mercury form when heated in Lavoisier's experiment?
Mercuric oxide
Why did Lavoisier use a sealed glass container for the mercury experiment?
Why did Lavoisier use a sealed glass container for the mercury experiment?
To keep total mass constant
What does the Law of Conservation of Mass state?
What does the Law of Conservation of Mass state?
Total mass of reactants = products
When carbon reacts with oxygen, what mass of carbon dioxide forms?
When carbon reacts with oxygen, what mass of carbon dioxide forms?
44g
What happens to atoms during chemical reactions?
What happens to atoms during chemical reactions?
They are rearranged, not destroyed
What was the total mass before and after the silver chloride precipitation experiment?
What was the total mass before and after the silver chloride precipitation experiment?
197.0g both times
Why must reactions be carried out in closed systems to verify the law?
Why must reactions be carried out in closed systems to verify the law?
To prevent gases escaping or entering
What error occurs when reactions happen in open containers?
What error occurs when reactions happen in open containers?
Gases escape, mass seems not conserved
The Law of Conservation of Mass is fundamental to which process?
The Law of Conservation of Mass is fundamental to which process?
Balancing chemical equations