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WRITING EQUATIONS REVIEW

WRITING EQUATIONS REVIEW. In a combustion reaction, one of the reactants is always Oxygen Gas (O 2 ). In a combustion reaction, one of the products is always Water (H 2 O). In every balanced chemical equation, each side of the equation has the same number of _______ of each element .

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WRITING EQUATIONS REVIEW

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  1. WRITING EQUATIONS REVIEW

  2. In a combustion reaction, one of the reactants is always • Oxygen Gas (O2)

  3. In a combustion reaction, one of the products is always • Water (H2O)

  4. In every balanced chemical equation, each side of the equation has the same number of _______ of each element. • ATOMS

  5. H2O(l) O2(g) + H2(g) • 2  __ + 2 • Decomposition

  6. Mg(s) + N2(g) Mg3N2(s) • 3 + __  __ • Synthesis

  7. Fe(s) + Cl2(g)  FeCl3(s) • 2 + 3  2 • Synthesis

  8. Al(s) + O2(g) Al2O3(s) • 4 + 3  2 • Synthesis

  9. CaCO3(s) CaO(s) + CO2(g) • ALREADY BALANCED! • Decomposition

  10. NaCl(l) Na(s) + Cl2(g) • 2  2 + __ • Decomposition

  11. FeCl2(aq) + Na3PO4(s) Fe3(PO4)2(s) + NaCl(aq) • 3 + 2  __ + 6 • Double Replacement

  12. K (s) + Cl2(g) KCl(s) • 2 + __  2 • Synthesis

  13. HCl(aq) + Ca(OH)2(s) CaCl2(aq) + H2O(l) • 2 + __  __ + 2 • Double Replacement

  14. KClO3(s) KCl (s) + O2(g) • 2  2 + 3 • Decomposition

  15. AgNO3(aq) + AlCl3(aq) AgCl(s) + Al(NO3)3(aq) • 3 + __  3 + __ • Double Replacement

  16. Na(s) + H2O(l)  NaOH(aq) + H2(g) • 2 + 2  2 + __ • Single Replacement

  17. Fe(s) + CuSO4(aq) FeSO4(aq) + Cu(s) • ALREADY BALANCED! • Single Replacement

  18. LiCN(aq) + BaCl2(aq) LiCl(aq) + Ba(CN)2(s) • 2 + __  2 + __ • Double Replacement

  19. NaBr(aq) + Cl2(aq) NaCl(aq) + Br2(l) • 2 + __  2 + __ • Single Replacement

  20. C2H5OH(g) + O2(g) CO2(g) + H2O(g) • __ + 3  2 + 3 • Combustion

  21. Sb2S3(s) + Fe(s) Sb(s) + FeS(s) • __ + 2  2 + 3 • Single Replacement

  22. C2H6(g) + O2(g) CO2(g) + H2O(g) • 2 + 7  4 + 6 • Combustion

  23. C2H2(g) + O2(g) CO2(g) + H2O(g) • 2 + 5  4 + 2 • Combustion

  24. CH4(g) + O2(g) CO2(g) + H2O(g) • __ + 2  __ + 2 • Combustion

  25. F2 Cl2 Br2 I2 H2 N2 O2 • The combustion of propane (C3H8). This is a reaction of propane with oxygen that yields carbon dioxide and water. • C3H8 + O2 CO2 + H2O • __ + 5  3 + 4 • COMBUSTION

  26. F2 Cl2 Br2 I2 H2 N2 O2 • The reaction of aluminum bromide with magnesium hydroxide to form aluminum hydroxide and magnesium bromide. • Figure out your compounds first. • Al 3+ Br – • AlBr3 • Mg 2+ OH - • Mg(OH)2

  27. F2 Cl2 Br2 I2 H2 N2 O2 • The reaction of aluminum bromide with magnesium hydroxide to form aluminum hydroxide and magnesium bromide. • Al 3+ OH – • Al(OH)3 • Mg 2+ Br – • MgBr2

  28. F2 Cl2 Br2 I2 H2 N2 O2 • The reaction of aluminum bromide with magnesium hydroxide to form aluminum hydroxide and magnesium bromide. • AlBr3 + Mg(OH)2  Al(OH)3 +MgBr2 • 2 + 3  2 + 3 • DOUBLE REPLACEMENT

  29. F2 Cl2 Br2 I2 H2 N2 O2 • Potassium metal and chlorine gas combine to form potassium chloride. • Figure out your compounds first. • K+ Cl- • KCl

  30. F2 Cl2 Br2 I2 H2 N2 O2 • Potassium metal and chlorine gas combine to form potassium chloride. • K + Cl2 KCl • 2 + __  2 • SYNTHESIS

  31. F2 Cl2 Br2 I2 H2 N2 O2 • Hydrogen gas and nitrogen monoxide react to form water and nitrogen gas. • H2 + NO  H2O + N2 • 2 + 2  2 + __ • SINGLE REPLACEMENT

  32. F2 Cl2 Br2 I2 H2 N2 O2 • The decomposition of hydrogen peroxide (H2O2) to form water and oxygen. • H2O2 H2O + O2 • 2  2 + __ • Decomposition

  33. The reaction Fe(s) + O2(g) Fe2O3(s) is an example of a: • ____________________ reaction.

  34. Mg(s) + HCl(aq) MgCl2(aq) + H2(g) • The above reaction is a __________________________ reaction.

  35. In what type of reaction is water often a product?

  36. The reaction 2Fe + 3Cl 2FeCl is which type of reaction? • The equation 2HgO  2Hg + O2 is an example of which type of reaction?

  37. Balance the skeleton equation. • AlCl + NaOH  Al(OH) + NaCl • Balance Fe + Cl FeCl

  38. Do the following statements happen in all chemical reactions? (Yes or No) • The bonds of the reactants are broken and new bonds of the products are formed. _______ • The ways in which atoms are joined together are changed. _______ • New atoms are formed as products. _______ • The starting substances are called reactants. _______

  39. In every balanced chemical equation, each side of the equation has the same number of _________________ of each element.

  40. In a combustion reaction, one of the reactants is always ________________________________ • The products of a combustion reaction may include w______________, c___________ d_____________, and c_________________ m__________________

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