hydroxides that •form High demand: give alkaline solutions Explain the trends in Group 1. in water. In Group 1, the further down the group an element is, the more reactive the element. 4.5.1.5 The elements in Group Explain how properties of the 1 Discussion question: Why do WS 1.2 clip: 7 of the periodic table elements in Group 7 depend some elements pair up? Demonstrate the are known as the on the outer shell of Pupils design a chart which reactions of chlorine, YouTube: halogens. They: electrons of the atoms. enables them to collate bromine and iodine with are non-metals Predict properties from given similarities and differences iron wool. consist of trends down the group. between three linked groups or agreed criteria Carry out displacement molecules factors eg Group 0, Group 1 charts are peer reactions using KCl, react with metals to and Group 7 of periodic table assessed. KBr, KI with waters of form ionic Extended writing: the corresponding compounds halogens. Describe the trends in form molecular properties in Group 7. word and balanced compounds with symbol equations for all other non-metallic Explain how properties of the reactions in the elements. elements in Group 7 depend displacement practical. on the outer shell of electrons In Group 7, the further of the atoms. down the group an element is, the higher High demand: its relative molecular Explain the trends in Group 7.
•form hydroxides that give alkaline solutions in water. In Group 1, the further down the group an element is, the more reactive the element. High demand: Explain the trends in Group 1. 4.5.1.5 The elements in Group 7 of the periodic table are known as the halogens. They: are non-metals consist of molecules react with metals to form ionic compounds form molecular compounds with other non-metallic elements. In Group 7, the further down the group an element is, the higher its relative molecular Explain how properties of the elements in Group 7 depend on the outer shell of electrons of the atoms. Predict properties from given trends down the group. 1 Discussion question: Why do some elements pair up? Pupils design a chart which enables them to collate similarities and differences between three linked groups or factors eg Group 0, Group 1 and Group 7 of periodic table Extended writing: Describe the trends in properties in Group 7. Explain how properties of the elements in Group 7 depend on the outer shell of electrons of the atoms. High demand: Explain the trends in Group 7. WS 1.2 Demonstrate the reactions of chlorine, bromine and iodine with iron wool. Carry out displacement reactions using KCl, KBr, KI with waters of the corresponding halogens. word and balanced symbol equations for all reactions in the displacement practical. clip: YouTube: agreed criteria charts are peer assessed.