Chemistry

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Chapter : 1. Metals & Non Metals

1. CaCO3 → CaO + CO2
2. CaO + SiO2 → CaSiO3
3. C + O2 → CO2
4. 4P + 5O2 → 2P2O5
5. S + O2 → SO2
6. 4Na + O2 → 2Na2O
7. 4K + O2 → 2K2O
8. 2Ca + O2 → 2CaO
9. CO2 + C → 2CO
10. Fe2O3 + 3CO → 2Fe + 3CO2
11. Al2O3 . 2H2O + 2NaOH → 2NaAlO2 + 3H2O
12. NaAlO2 + HCl + H2O → Al(OH)3 + NaCl
13. 2Al(OH)3 Al2O3 + 3H2O
14. 2CuS + 3O2 → 2CuO + 2SO2
15. 3MnO4 + 4Al → 2Al2O3 + 3Mn
16. Fe2O3 + 2Al → Al2O3 + 3Mn
17. CuS + 2CuO → 3Cu + SO2
18. Si + O2 → SiO2
19. SiO2 + C → Si + CO2
20. Si + → SiO2 + 2H2
21. Ca(OH)2 + Cl →
22. CaSO4. 2H2O CaSO4 H2O + H2O
23. S +
24. H2 + S → H2S
25. 2NaOH + SI + H2O → Na2SiO3 + 2H2

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