Online teaching



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

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

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