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Types of Chemical Reactions

Types of Chemical Reactions. CO 2. Valence can tell us how many electrons elements are willing to ACCEPT , DONATE , or SHARE …. Mg 2+. N 3-. The Charge on an ion can tell us which other ions it wants to be near…. Fe 2+. O 2-. Cu 2+. Na +.

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Types of Chemical Reactions

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  1. Types of Chemical Reactions CO2 Valence can tell us how many electrons elements are willing to ACCEPT, DONATE, or SHARE… Mg2+ N3- The Charge on an ion can tell us which other ions it wants to be near… Fe2+ O2- Cu2+ Na+ What are the Types of Chemical Reactions we can control? Li+ OH- NO3- H+ Open your workbook to a blank page – you will want record the five reaction types! H2O

  2. Types of Chemical Reactions CO2 Hydrocarbons can be burned in a Combustion Reaction Mg2+ N3- Burning gas for use in a Bunsen Burner… Fe2+ O2- Cu2+ Na+ Li+ OH- Chemical Word Equation: NO3- H+ Methane + Oxygen → Carbon dioxide + Water Chemical Formulae: H2O CH4(gas) + 2O2(gas) → CO2(gas)+ 2H2O(liquid)

  3. Types of Chemical Reactions CO2 Combustion Reaction Mg2+ CxHy+ O2→ CO2+ H2O N3- Fe2+ O2- A combustion reaction is when all elements in a compound are combined with oxygen, which then produces carbon dioxide and water. Cu2+ Na+ Li+ OH- NO3- H+ H2O

  4. Types of Chemical Reactions CO2 Multiple elements or compounds can form a new compound in a Combination Reaction Mg2+ N3- Fe2+ O2- Cu2+ Na+ Li+ OH- Carbon dioxide Water NO3- H+ H2O

  5. Types of Chemical Reactions CO2 Multiple elements or compounds can form a new compound in a Combination Reaction Mg2+ N3- Fe2+ O2- Cu2+ Na+ Li+ OH- Carbon dioxide Water Chemical Word Equation: NO3- H+ + Water → Carbonic Acid Chemical Formulae: H2O CO2(gas) + H2O(liquid) → H2CO3(aqueous solution)

  6. Types of Chemical Reactions CO2 Combination Reaction Mg2+ A + B → C N3- Fe2+ O2- The reactants (A and B) can be either pure elements, or compounds. The product (C) is a new compound formed from the reactants. Cu2+ Na+ Li+ OH- NO3- H+ H2O

  7. Types of Chemical Reactions CO2 A compound can be broken into simpler substances in a Decomposition Reaction Mg2+ N3- How do we get fuel for our Hydrogen Fuel-cell cars of the future? Fe2+ O2- Cu2+ Na+ Li+ OH- Chemical Word Equation: Water → Hydrogen + Oxygen NO3- H+ Chemical Formulae: H2O(liquid) → H2(gas) + O2(gas) H2O

  8. Types of Chemical Reactions CO2 Decomposition Reaction Mg2+ AB → A + B N3- Fe2+ O2- The reactant (AB) is a compound. The products (A + B) can be elements or compounds. Cu2+ Na+ Li+ OH- NO3- H+ H2O

  9. Types of Chemical Reactions CO2 A compound can break up, and one element can find a new partner straight away in Single Replacement Reactions Mg2+ N3- Fe2+ O2- Sodium metal in water… Cu2+ Na+ Li+ OH- Chemical Word Equation: Sodium + Water→ Hydrogen + Sodium Hydroxide NO3- H+ Chemical Formulae: 2Na(solid) + 2H2O(liquid)→ H2(gas) + 2NaOH(aqueous) H2O

  10. Types of Chemical Reactions CO2 A compound can break up, and one element can find a new partner straight away in Single Replacement Reactions Mg2+ N3- Fe2+ O2- Cu2+ Na+ Think of the water as a hydrogen atom with an OH- bonded to it… Li+ OH- The OH- breaks up with the hydrogen and links with the Sodium. Chemical Word Equation: Sodium + Water→ Hydrogen + Sodium Hydroxide NO3- H+ Chemical Formulae: 2Na(solid) + 2H2O(liquid)→ H2(gas) + 2NaOH(aqueous) H2O

  11. Types of Chemical Reactions CO2 Single Replacement Reactions Mg2+ A + BC → B + AC N3- Fe2+ O2- A and B are elements. BC and AC are compounds. Cu2+ Na+ Li+ OH- NO3- H+ H2O

  12. Types of Chemical Reactions CO2 Two compounds can react to form two new compounds in Double Replacement Reactions Mg2+ N3- Fe2+ O2- This type of chemical reaction features heavily in REDOX reactions (Year 11 & 12), where electrons move from one place to another… Cu2+ Na+ Li+ OH- This reaction is also responsible for Precipitation reactions where a solid falls out of a solution. NO3- H+ H2O

  13. Types of Chemical Reactions CO2 Double Replacement Reactions Two compounds… Mg2+ N3- AgNO3 KCl Fe2+ O2- SilverNitrate PotassiumChloride Cu2+ AgCl(s) + KNO3(aqueous) (aqueous) + → (aqueous) Na+ Li+ OH- The Ag+ and K+cations, along with the NO3- and Cl- anions, all mix in an aqueous solution. NO3- H+ Ag+ and Cl- fit soo well together, they link together and fall out of the solution as a solid – AgClprecipitates out of solution. H2O

  14. Types of Chemical Reactions CO2 Double Replacement Reactions Mg2+ AB + CD → AD + CB N3- Fe2+ O2- CationsA and C exchange anions B and D. Cu2+ Na+ Li+ OH- NO3- H+ H2O

  15. Types of Chemical Reactions CO2 Five types of Chemical Reactions: Combustion Reaction CxHy+ O2→ CO2+ H2O Mg2+ N3- Combination Reaction Fe2+ A + B → C O2- Cu2+ Decomposition Reaction AB → A + B Na+ Li+ OH- Single Replacement Reactions A + BC → B + AC NO3- H+ Double Replacement Reactions AB + CD → AD + CB H2O

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