4.6.2.3 Ionic compounds have regular Describe the 1 WS 1.2 Electrolysis demo or structures (giant ionic lattices) in structure of giant class practical to show Use about energy You Tube video i – which there are strong ionic lattices. movement of ions in transfers and the relative electrostatic forces of attraction in electrolysis. Explain why strength of chemical bonds all directions between oppositely compounds have and intermolecular forces to Students investigate charged ions. high melting explain the different electrolysis and explain compounds have high points and boiling temperatures at which the process qualitatively melting points and high boiling points. changes of state occur. and quantitatively. points because of the large Represent melting and boiling Explain why ionic amounts of energy needed to points of ionic compounds to compounds when break the many strong bonds. scale, on a giant thermometer. melted or When melted or dissolved in dissolved conduct WS 1.2 ionic compounds conduct electricity. Use data to predict states of electricity because the ions are substances under given free to move and so charge can conditions. flow. 4.6.2.4 When atoms share pairs of Recognise 1 Write a vignette for both Demo the formation of Video clip: electrons they form covalent substances as simple and giant covalent hydrogen chloride. Draw bonds. These bonds between small molecules, substances, which illustrates the dot and cross atoms are strong. polymers or giant the differences between them. diagram for this structures from reaction. Covalently bonded substances WS 1.2 diagrams showing may consist of small molecules. simple covalent Describe the limitations of their bonding. substance using particular representations and Draw dot and molecular model kits. models to include dot and cross diagrams for cross diagrams, ball and stick
4.6.2.3 Ionic compounds have regular structures (giant ionic lattices) in which there are strong electrostatic forces of attraction in all directions between oppositely charged ions. compounds have high melting points and high boiling points because of the large amounts of energy needed to break the many strong bonds. When melted or dissolved in ionic compounds conduct electricity because the ions are free to move and so charge can flow. Describe the structure of giant ionic lattices. Explain why compounds have high melting points and boiling points. Explain why ionic compounds when melted or dissolved conduct electricity. 1 WS 1.2 Use about energy transfers and the relative strength of chemical bonds and intermolecular forces to explain the different temperatures at which changes of state occur. Represent melting and boiling points of ionic compounds to scale, on a giant thermometer. WS 1.2 Use data to predict states of substances under given conditions. Electrolysis demo or class practical to show movement of ions in electrolysis. Students investigate electrolysis and explain the process qualitatively and quantitatively. You Tube video – i 4.6.2.4 When atoms share pairs of electrons they form covalent bonds. These bonds between atoms are strong. Covalently bonded substances may consist of small molecules. Recognise substances as small molecules, polymers or giant structures from diagrams showing their bonding. Draw dot and cross diagrams for 1 Write a vignette for both simple and giant covalent substances, which illustrates the differences between them. WS 1.2 Describe the limitations of particular representations and models to include dot and cross diagrams, ball and stick Demo the formation of hydrogen chloride. Draw the dot and cross diagram for this reaction. simple covalent substance using molecular model kits. Video clip:
AQA-8465-SOW-ISLD.DOCX