Question

Std 10th science assignment. writing of word equations, chemical equations, state the type of reaction. (students should write 20 reactions)

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Answer 1

Explanation:

Combinations reaction

I.C + O2 CO2 (carbon + oxygen carbon dioxide).

2. 2Mg + O2 2MGO ( magnesium + oxygen magnesium oxide).

3. 8Fe + S8 8FeS(iron + sulfur iron sulfide)

4.CH4 + 2O2 CO2 + 2H2O

5. CaO + H2O Ca(OH)2 + heat

Decomposition reactions

1. 2H2O 2H2 + O2

2. 2FeSO4 heat Fe2O3 + SO2 + SO3

3. CaCO3 heat CaO + CO2

4. 2AgCl heat 2Ag + Cl 2

5. 2Pb(NO3)2 heat 2PbO + 4NO2+ O2

displacement reaction

1. Fe + CuSO4 FeSO4 + Cu

2 Zn + CuSO4 ZnSO4 + Cu

3. Pb + CuCl2 PbCl2 + Cu

4. Al + CuCl2 AlCl2 + Cu

5. Mg + 2H2O Mg(OH)2 + H2^

Double displacement reaction

Na2SO4 + BaCl2 BaSO4 + 2NaCl