The Mole: The Chemist''s Counting Unit (LC 2027) (Leaving Cert Chemistry): Flashcards

Chemistry's counting unit for atoms and molecules

$6.02 \times 10^{23}$

$N_A$

Italian chemist who developed system to count atoms

Bridges microscopic atoms & macroscopic lab measurements

$6.02 \times 10^{23}$ atoms

$12 g$

$24 g$

$108 g$

Mg atom is twice as heavy as C atom

From 'moles' meaning heap or pile

23 October, 6:02 am to 6:02 pm

Counting atoms by weighing substances