Level 2
18 words 0 ignored
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Ignore words
Check the boxes below to ignore/unignore words, then click save at the bottom. Ignored words will never appear in any learning session.
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Carbon
C
Bromine
Br
Sodium
Na
Potassium
K
Krypton
Kr
Oxygen
O
Nitrogen
N
Neon
Ne
Aluminium
Al
Iron
Fe
Copper
Cu
Zinc
Zn
Silicon
Si
Sulfur
S
Calcium
Ca
Lithium
Li
Chlorine
Cl
Iodine
I
