Starter

• Mock reflection sheets / complete Module One Feedback form – link to blog on fb page.

• Build the following molecules using molymods :-

• EASY : Methane, Propane, Butane• MEDIUM : Butene, Cyclopropane.• HARD : 2-chloropentane, ethanoic acid.

Objectives

• MUST: Name alkanes / alkenes ( up to C6 )• SHOULD : Understand the differences

between empirical, molecular, structural, displayed and skeletal formulae.

• COULD : Use geometry and overall polarity to compare boiling points of unusual alkanes.

Task One

• Or Page 1 & 2 Organic Chemistry workbooks.

Task Two

• Empirical; simplest ratio of elements.• Molecular; includes all atoms but does not

show arrangement.• Structural; minimum possible representation

of structure.• Displayed; 2D projection.• Skeletal formulae; 3D structural formula.

Task Three

• As a class you are provided with 4 alkanes.

• Each team takes one alkane and, using a water bath, establish its boiling point.

Alkane Boiling Point

Task Four

• Place in order, with reasons, the highest boiling to the lowest boiling.

• Words to include : Structure, shape, hybridisation, intermolecular forces, boiling.

• Propane, Ethane, Cyclohexane, 1-chlorobutane.

Homework