therefore safer? (Some glasses do melt at about 200 °C.) Lesson 9Eb: Polymers Learning objectives Exemplar teaching activities Differentiation Resources Maths skills Practical skills Developing Starter: Polymer properties Exploring: Resources n/a Students use Recall that oil is the primary Students work in groups to describe from 9Eb 4% PVA Polymer slime source of raw materials for the plastics the general properties of polymers. Students can go Exploring solution, 4% industry. Ask each to look at some on to consider Science. solution to Recall what happens when monomers samples of polymers and then list the properties of make slime. polymerise. the properties they think they have in slime. Recall the names of some common common. Demonstrate artificial and natural polymers. Explaining: how can be Link the properties of common plastics Exploring: Polymer Polymer made from the to their uses. Students use 4% PVA solution, 4% reaction formation and Securing borax solution to make slime. energy between Classify changes as exothermic or Students consider endothermic from temperature Explaining: Polymer formation and the energy changes. energy changes involved Explain how the properties of a Demonstrate how nylon can be in the reaction. in water and substance depend on the bonding and made from the reaction between either arrangement of atoms. hexane-1,6-diamine dichloride or Exceeding in water and hexanedioyl Model the formation of poly(ethene) either decanedioyl dichloride or (adipoyl) using equations, symbols and particle hexanedioyl (adipoyl) dichloride in in diagrams. cyclohexane. cyclohexane. Identify the monomer structures in a given polymer chain. Plenary: Thinking about polymers Working Scientifically Odd One Out: glass, poly(ethene), Recall some methods by scientists copper. (Possible answers: glass is comment on one another’s work (e.g. the only brittle material; glass is the scientific journals, conferences). only material made from sand; Describe the process of peer review. poly(ethene) is the only material Explain why peer review is used. made from oil; poly(ethene) is the Evaluate peer review. only one that is elastic; copper is the only metal; copper is the only
therefore safer? (Some glasses do melt at about 200 °C.) Lesson 9Eb: Polymers Learning objectives Exemplar teaching activities Differentiation Resources Maths skills Practical skills Developing Recall that oil is the primary source of raw materials for the plastics industry. Recall what happens when monomers polymerise. Recall the names of some common artificial and natural polymers. Link the properties of common plastics to their uses. Securing Classify changes as exothermic or endothermic from temperature changes. Explain how the properties of a substance depend on the bonding and arrangement of atoms. Exceeding Model the formation of poly(ethene) using equations, symbols and particle diagrams. Identify the monomer structures in a given polymer chain. Working Scientifically Recall some methods by scientists comment on one another’s work (e.g. scientific journals, conferences). Describe the process of peer review. Explain why peer review is used. Evaluate peer review. Starter: Polymer properties Students work in groups to describe the general properties of polymers. Ask each to look at some samples of polymers and then list the properties they think they have in common. Exploring: Polymer Students use 4% PVA solution, 4% borax solution to make slime. Explaining: Polymer formation and energy Demonstrate how nylon can be made from the reaction between hexane-1,6-diamine in water and either decanedioyl dichloride or hexanedioyl (adipoyl) dichloride in cyclohexane. Plenary: Thinking about polymers Odd One Out: glass, poly(ethene), copper. (Possible answers: glass is the only brittle material; glass is the only material made from sand; poly(ethene) is the only material made from oil; poly(ethene) is the only one that is elastic; copper is the only metal; copper is the only Exploring: Polymer slime Students can go on to consider the properties of slime. Explaining: Polymer formation and energy Students consider the energy changes involved in the reaction. Resources from 9Eb Exploring Science. n/a Students use 4% PVA solution, 4% solution to make slime. Demonstrate how can be made from the reaction between in water and either dichloride or hexanedioyl (adipoyl) in cyclohexane.
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