Online teaching



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Author: piqué sira
Description:
Keywords: , , , , , , online teaching

Content:
Definitions:
0. liti
1. xenó
2. bor
3. Bari
4. cesi
5. oxigen
6. alumini
7. sodi
8. Seleni
9. plom
10. sofre
11. potassi
12. clor
13. hidrogen
14. nitrogen
15. Ferro

Answers:
0. Al
1. Li
2. O
3. Ba
4. Se
5. fe
6. xe
7. N
8. na
9. S
10. Pb
11. K
12. H
13. cs
14. B
15. Cl
.