The mole (Edexcel GCSE Chemistry): Flashcards

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3.2.1 The Mole
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Unit used to count particles in chemistry

Mole

Particles in one mole

6.02×10236.02 \times 10^{23}

Name for 6.02×10236.02 \times 10^{23}

Avogadro's number

Scientist who helped develop the mole concept

Amedeo Avogadro

Everyday analogy for moles

Dozen (12 items)

Why chemists use moles instead of counting individually

Atoms/molecules too tiny to count individually

Mass of 1 mole equals this in grams (for elements)

Relative atomic mass (ArAr)

Mass of 1 mole equals this in grams (for compounds)

Relative formula mass (MrMr)

Mass of 1 mole of carbon (CC)

12 grams

Mass of 1 mole of water (H2OH_2O)

18 grams

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