The Law of Conservation of Mass (Leaving Cert Chemistry): Flashcards
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Practise the cards
13 cards from this deck
Who discovered the Law of Conservation of Mass?
Who discovered the Law of Conservation of Mass?
Antoine Lavoisier (1743-1794)
Lavoisier's contribution to chemistry
Lavoisier's contribution to chemistry
Founder of modern analytical chemistry
Year of Lavoisier's mercury experiment
Year of Lavoisier's mercury experiment
1774
Element Lavoisier heated in sealed container
Element Lavoisier heated in sealed container
Mercury
Product formed when Hg heated with oxygen
Product formed when Hg heated with oxygen
Mercuric oxide ()
Total mass change in mercury experiment
Total mass change in mercury experiment
No change (remained same)
State the Law of Conservation of Mass
State the Law of Conservation of Mass
Total mass of reactants = total mass of products
What happens to atoms in reactions?
What happens to atoms in reactions?
Cannot disappear, only rearranged
What is a closed system?
What is a closed system?
Nothing enters or escapes during reaction
Why use closed system for mass tests?
Why use closed system for mass tests?
Prevents gas escape/entry
Total mass: 12g C + 32g produces?
Total mass: 12g C + 32g produces?
44g
Oxygen mass loss vs mercury mass gain
Oxygen mass loss vs mercury mass gain
Equal (loss = gain)
Key application of mass conservation law
Key application of mass conservation law
Balancing chemical equations