GCSE Chemistry Test 1- Quantitative Chemistry

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What is the 'Law Of Conservation Of Mass'?
The Law Of Conservation Of Mass states that no atoms are lost or made during a chemical reaction. The mass of the product is equal to the mass of the reactants.
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What is the relative atomic mass of an element?
The weighted average of the masses of an elements isotopes relative to 1/12 of a carbon-12 atom.
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What is the relative formula mass of an element?
The sum of all the relative atomic masses in a compound or molecule.
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What is the symbol for A) Relative atomic mass? B) Moles? C) Mass?
A) Mr B) N C) M
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What is thermal decomposition?
When heat causes a substsance to break down in to simpler substances.
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What is the name of the following reaction: Sodium Carbonate + Calcium Nitrate --> Calcium Carbonate + Sodium Nitrate
This is a displacement reaction, this meant a more reactive element replaced a less reactive element.
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What is a mole?
The representation of the Avogadro Contant in an atom.
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What is the Avogadro Constant?
The number equal to 6.02 x 10^23. 1 mole is this number of particles required to make up this number.
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What is the equation triangle for working out the number of moles?
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How do you deduce the balancing numbers in an equation from reacting masses?
1) Calculate the number of moles 2) Find the simplest whole number ratio of these mole values by dividing them all by the SMALLEST mole value 3) If this does not give a whole number ratio, multiply by a factor.
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What are the factors used when working out the ratio of the substance?
Value Ending | Multiply By
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Other cards in this set

Card 2

Front

What is the relative atomic mass of an element?

Back

The weighted average of the masses of an elements isotopes relative to 1/12 of a carbon-12 atom.

Card 3

Front

What is the relative formula mass of an element?

Back

Preview of the front of card 3

Card 4

Front

What is the symbol for A) Relative atomic mass? B) Moles? C) Mass?

Back

Preview of the front of card 4

Card 5

Front

What is thermal decomposition?

Back

Preview of the front of card 5
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