Aliphatic Hydrocarbons: Alkanes, Alkenes, & Alkynes
Learning Goals
I can use the following words correctly: saturated hydrocarbon, unsaturated hydrocarbon.
I can explain the difference between saturated and unsaturated hydrocarbons
I can build molecular models of alkanes, alkenes, alkynes, and aromatics.
I can use proper IUPAC conventions to name, write formulas and draw structural diagrams of simple hydrocarbons.
I can describe some physical properties of simple hydrocarbons
I can explain the difference between saturated and unsaturated hydrocarbons
I can build molecular models of alkanes, alkenes, alkynes, and aromatics.
I can use proper IUPAC conventions to name, write formulas and draw structural diagrams of simple hydrocarbons.
I can describe some physical properties of simple hydrocarbons
LESSON OVERVIEW (SPECIFIC EXPECTATIONS: B2.1, B2.2, B2.3, B3.1, B3.2)
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Hook:
The students a package with different images of alkanes, alkenes, and alkynes. The images will accompanied by a reading which states the definitions of alkanes, alkenes and alkynes. They will sort the pictures into three piles and be asked to support why they made specific choices. The answers will be shared as a class. The teacher will then show students the actual definition of what alkanes, alkenes, and alkynes are and this will be used as a starting point for the lesson. |
Teaching Strategy:
1. Nomenclature – The following videos may be shown for students to learn IUPAC naming conventions of simple hydrocarbons. These videos should be shown after a formal introductory note to reinforce new concepts learned.
2. Demo: Properties of simple hydrocarbons – A demo will be shown to students where the solubility of alkanes, alkenes, and alkynes will be tested in polar and non-polar solvents. Students will be given an accompanying POE handout where they will predict, observe, and explain what they observed and concluded from the demonstration given. This will be followed by a quick note on the boiling point and melting point properties of these simple hydrocarbons.
3. Modelling Activity:
Consolidation:
SMARTBoard activity to review naming of simple hydrocarbons. Students can come up to the board and categorize names into groups (alkanes, alkenes, alkynes). You can also design a SMARTboard lesson with images of simple hydrocarbon chain structures that students have to first name and then classify into its respective group. This can be taken a step further into a teams-games-tournament activity where the class can be divided into groups and the first team that can correctly identify the name and the category wins. This serves as an excellent tool for assessment for learning in allowing the teacher to see whether students have understood the concept and enables them to clarify any misconceptions that may arise on the spot.
3. Modelling Activity:
- A great way to demonstrate chain length and multiple bonds is to allow students to build simple hydrocarbon chains using modeling kits. If modelling kits are not available then Styrofoam balls and pipe cleaners or candy and toothpicks are a great economical substitute.
Consolidation:
SMARTBoard activity to review naming of simple hydrocarbons. Students can come up to the board and categorize names into groups (alkanes, alkenes, alkynes). You can also design a SMARTboard lesson with images of simple hydrocarbon chain structures that students have to first name and then classify into its respective group. This can be taken a step further into a teams-games-tournament activity where the class can be divided into groups and the first team that can correctly identify the name and the category wins. This serves as an excellent tool for assessment for learning in allowing the teacher to see whether students have understood the concept and enables them to clarify any misconceptions that may arise on the spot.