Index
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Élements chimiques
Matching exercise
Match the items on the right to the items on the left.
Check
Sodium
???
N
O
Na
B
F
C
Oxygène
???
N
O
Na
B
F
C
Azote
???
N
O
Na
B
F
C
Carbone
???
N
O
Na
B
F
C
Bore
???
N
O
Na
B
F
C
Fluor
???
N
O
Na
B
F
C
Check
OK
Index
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