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Chemistry paper 1 > Conservation Of Mass > Flashcards

Conservation Of Mass Flashcards

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1
Q

Total mass of the products of a chemical reaction is always …..

A

Equal to the total mass of reactants, this is because no atoms are lost or made

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2
Q

What is relative formula mass of a compound (Mr)

A

Sum of relative atomic masses (Ar)

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3
Q

Relative formula mass of CO2

A

(12x1) + (16x2)

= 44

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4
Q

Why do some reactions appear to involve a change in mass

A

-real-time are carried out in a non-closed system and include a gas that can enter or leave

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Chemistry paper 1 (16 decks)

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