Reactions of Hydrocarbons
Learning Goals
I can explain what types of chemical reactions simple hydrocarbons can undergo and what products are formed as a result.
LESSON OVERVIEW (SPECIFIC EXPECTATIONS: B3.3)
Hook:
Flash Card Combinations Activity: Students will be divided into pairs. The teacher will give each pair six flash cards on which they will have one reactant, one product, and four terms with accompanying chemical formulae. Each group will be given a different reactant and product, however the four terms will be identical for all. The terms will be as follows:
Students will have to determine which term/chemical formula is needed to allow for the reaction to occur and yield the given product. They will then stick their reaction on the board for the rest of the class to view. The teacher will then go through each reaction and mark it as correct or incorrect; feedback will be provided. This will segue into a formal lesson on the types of reactions hydrocarbons undergo.
Teaching Strategy:
PowerPoint Presentation: Reactions of Hydrocarbons
Flash Card Combinations Activity: Students will be divided into pairs. The teacher will give each pair six flash cards on which they will have one reactant, one product, and four terms with accompanying chemical formulae. Each group will be given a different reactant and product, however the four terms will be identical for all. The terms will be as follows:
- Halogenation (Br-Br)
- Hydrogenation (H-H)
- Hydrohalogenation (H-Br)
- Hydration (H2O)
Students will have to determine which term/chemical formula is needed to allow for the reaction to occur and yield the given product. They will then stick their reaction on the board for the rest of the class to view. The teacher will then go through each reaction and mark it as correct or incorrect; feedback will be provided. This will segue into a formal lesson on the types of reactions hydrocarbons undergo.
Teaching Strategy:
PowerPoint Presentation: Reactions of Hydrocarbons
- The following presentation can be used to introduce the different types of reactions that hydrocarbons undergo. It covers the addition reactions of alkanes (i.e., halogenation) and the substitution reactions of alkenes and alkynes (i.e, hydrogenation, hydrohalogenation, and hydration). Use the following video to illustrate Markovnikov's rule as it applies to hydrohalogenation of alkenes.
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Consolidation:
Building Molecular Models to Illustrate Reactions
Building Molecular Models to Illustrate Reactions
- Students will use molecular modelling kits to plan out their own reactions and examine how the structure changes as a result of the reaction. They will be required to write out the chemical name and structural formula of reactants used and products formed, and specify the type of reaction taking place. This will be submitted as an exit slip.