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An Introduction to the Types of Reactions

An Introduction to the Types of Reactions. Science 10 Chemistry Unit. Your turn:. Write a word equation and a chemical equation for the following problems. Be sure to: include the final equation states of matter and balance. magnesium + oxygen hydrogen + oxygen

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An Introduction to the Types of Reactions

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  1. An Introduction to the Types of Reactions Science 10 Chemistry Unit

  2. Your turn: Write a word equation and a chemical equation for the following problems.Be sure to: • include the final equation states of matter • and balance

  3. magnesium + oxygen • hydrogen + oxygen • nitrogen reacts with another element to produce ammonia • aluminum reacts with oxygen • sulfur (S8(s)) reacts with air to produce sulfur dioxide • carbon disulfide is produced by the reaction of carbon with sulfur (S8(s))

  4. Problem 1: Word Equation: magnesium + oxygen →magnesium oxide Chemical Equation: Mg (s) + O2(g) → Mg2O(s) Is it Balanced? 4 Mg (s) + O2(g) → 2 Mg2O(s)

  5. Problem 2: Word Equation: hydrogen + oxygen →water Chemical Equation: H2(g) + O2(g) → H2O(l) Is it Balanced? 2 H2(g) + O2(g) → 2 H2O(l)

  6. Problem 3: Nitrogen reacts with another element to produce ammonia Word Equation: nitrogen + hydrogen →ammonia Chemical Equation: N2(g) + H2(g) → NH3 (l) Is it Balanced? N2(g) + 3 H2(g) → 2 NH3 (l)

  7. Problem 4: Word Equation: aluminum + oxygen → aluminum oxide Chemical Equation: Al (s) + O2(g) → Al2O3 (s) Is it Balanced? 4 Al (s) + 3 O2(g) → 2 Al2O3 (s)

  8. Problem 5: Sulfur (S8(s)) reacts with air to produce sulfur dioxide Word Equation: sulphur + oxygen →sulphur dioxide Chemical Equation: S8(s) + O2(g) → SO2 (g) Is it Balanced? S8(s) + 8 O2(g) → 8 SO2 (g)

  9. Problem 6: Carbon disulfide is produced by the reaction of carbon with sulfur (S4 (s)). Word Equation: carbon + sulphur →water Chemical Equation: C (s) + S4 (s)→ CS2 (s) Is it Balanced? 2 C (s) + S4 (s)→ 2 CS2 (s)

  10. nitrogen reacts with another element to produce ammonia • aluminum reacts with oxygen • sulfur (S8(s)) reacts with air to produce sulfur dioxide • Carbon disulfide is produced by the reaction of carbon with sulfur

  11. Formation or Synthesis Reactions • ________Fe + ________O2 → ________Fe2O3 • ________Pt + ________S8 → ________PtS2 • ________CaO + ________H2O → _______Ca(OH)2 • ________Na + ________I2 → ________

  12. ________Mg + ________O2 → ________ • ________Mg + ________P4 → ________Mg3P2 • ________H2 + ________Cl2 → ________ • ________CO + ________O2 → ________CO2 • ________Na2O + ________H2O → ______NaOH • ________NO + ________O2 → ________NO2

  13. ________Na + ____ S8 → ____ Na2S • ________Mg + ________Cl2 → ______ MgCl2 • ________P + ________O2 → ________P4O10 • ________Cu + ________O2 → ________Cu2O

  14. Your turn: Write a word equation and a chemical equation for the following problems.Be sure to: • include states of matter • and balance the final equation

  15. Decomposition of sodium chloride  • Chromium (III) oxide is decomposed into its elements   • Nitrogen is produced from the decomposition of ammonia  • Mercury (II) sulfide breaks down into its elements  • Decomposition of sodium hydroxide • Decomposition of potassium bromide • Decomposition of magnesium oxide • Decomposition of ammonium sulphate

  16. Problem 1: Word Equation: Sodium chloride   sodium + chlorine Chemical Equation: NaCl (s)  Na (s)  + Cl2 (g) Is it Balanced? 2 NaCl (s)  2 Na (s)  + Cl2 (g)

  17. Problem 2: Word Equation: Chromium (III) oxide   chromium + oxygen Chemical Equation: Cr2O3(s)  Cr (s)  + O2 (g) Is it Balanced? 2 Cr2O3(s)  4 Cr (s)  + 3 O2 (g)

  18. Problem 3: Word Equation: ammonia   nitrogen + hydrogen Chemical Equation: NH3(l)  N2(g)  + H2 (g) Is it Balanced? 2 NH3(l)  N2(g)  + 3 H2 (g)

  19. Problem 4: Word Equation: Mercury (II) sulfide   mercury + sulphur Chemical Equation: HgS (s)  Hg (s)  + S4 (s) Is it Balanced? 4 HgS (s)  4 Hg (s)  + S4 (s)

  20. Or: Word Equation: Mercury (II) sulfide   mercury + sulphur Chemical Equation: HgS (s)  Hg (s)  + S8 (s) Is it Balanced? 8 HgS (s)  8 Hg (s)  + S8 (s)

  21. Problem 5: Word Equation: sodium hydroxide →sodium + hydrogen + oxygen Chemical Equation: NaOH (s)  Na (s)  + H2 (g)+ O2 (g) Is it Balanced? 2 NaOH (s)  2 Na (s)  + H2 (g)+ O2 (g)

  22. Problem 6: Word Equation: potassium bromide →potassium + bromine Chemical Equation: KBr (s)  K (s) + Br2 (l) Is it Balanced? 2 KBr (s)  2 K (s) + Br2 (l)

  23. Problem 7: Word Equation: Magnesium oxide →magnesium + oxygen Chemical Equation: MgO (s)  Mg (s) + O2 (g) Is it Balanced? 2 MgO (s)  2 Mg (s) + O2 (g)

  24. Problem 8: Word Equation: Ammonium sulphate →ammonia + hydrogen sulphate Chemical Equation: (NH4)2SO4(s)  NH3(l) + H2SO4 (l) Is it Balanced? (NH4)2SO4(s)  2 NH3(l) + H2SO4 (l)

  25. Decomposition Reactions (Handout) 1. ____ NH4OH → ____ NH3 + ____ H2O 2. ____ BaO → ____________ + ______________ 3. ____ NaCl → ____________ + ____________ 4. ____ Zn(OH)2 → ____ ZnO + ____ H2O 5. ____ BaCO3 → ____ BaO + ____ CO2

  26. 6. ____ NH4NO3 → ____ N2O + ____ H2O 7. ____ Al2O3 → ____________ + ____________ 8. ____ KClO3 → ____ KCl + ____ O2 9. ____ NaClO3 → ____ NaCl + ____ O2 10.____ NH4NO2 → ____ N2 + ____ H2O

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