Write simple chemical formulae sides of a boiling tube. Ask students to from information on structure. indicate where there is a Interpret formulae to identify the chemical change (formation of mercury) of and ratio of atoms in a and a physical change (condensation of compound. mercury gas to liquid) during the Exceeding experiment. Give a simple description of the valency of an element and use this Plenary: Thinking about atoms and to deduce the formula of properties compounds (containing two main Odd One Out: melting point, atomic group elements). radius, flammability. (Possible answers: melting point is the only property that must involve a change of state; atomic radius is the only property that does not involve an energy change (heat); flammability is the only property that involves a chemical change.) Lesson 8Fc: Mendeleev’s table Learning objectives Exemplar teaching activities Differentiation Resources Maths skills Practical skills Developing Starter: Elements code n/a Resources n/a Demonstrate Use the periodic to look up Working in small groups, students from 8Fc the properties symbols. use a copy of the periodic table to Exploring of the first three Identify the alkali metals, halogens, make up five words using the Science. alkali metals, ‘code’ (transition metals) and noble gases in symbols of three or four elements, including how the periodic table. e.g., casters: calcium, strontium, they are stored State what elements in the same erbium and sulfur. Groups take turns under oil, how group of the periodic table share. to read out their list of elements and they do not look Recall that the noble gases are ask other groups to work out the shiny until cut chemically inert compared with other word. then quickly go ‘code’ elements. dull, their Securing Exploring: Groups in the periodic reaction with Recall the typical properties of alkali table water. metals. Give students some exercises to Recall the typical properties of complete the main groups in the halogens. periodic table (alkali metals, halogens
Write simple chemical formulae from information on structure. Interpret formulae to identify the of and ratio of atoms in a compound. Exceeding Give a simple description of the valency of an element and use this to deduce the formula of compounds (containing two main group elements). sides of a boiling tube. Ask students to indicate where there is a chemical change (formation of mercury) and a physical change (condensation of mercury gas to liquid) during the experiment. Plenary: Thinking about atoms and properties Odd One Out: melting point, atomic radius, flammability. (Possible answers: melting point is the only property that must involve a change of state; atomic radius is the only property that does not involve an energy change (heat); flammability is the only property that involves a chemical change.) Lesson 8Fc: Mendeleev’s table Learning objectives Exemplar teaching activities Differentiation Resources Maths skills Practical skills Developing Use the periodic to look up symbols. Identify the alkali metals, halogens, (transition metals) and noble gases in the periodic table. State what elements in the same group of the periodic table share. Recall that the noble gases are chemically inert compared with other elements. Securing Recall the typical properties of alkali metals. Recall the typical properties of halogens. Starter: Elements code Working in small groups, students use a copy of the periodic table to make up five ‘code’ words using the symbols of three or four elements, e.g., casters: calcium, strontium, erbium and sulfur. Groups take turns to read out their list of elements and ask other groups to work out the ‘code’ word. Exploring: Groups in the periodic table Give students some exercises to complete the main groups in the periodic table (alkali metals, halogens n/a Resources from 8Fc Exploring Science. n/a Demonstrate the properties of the first three alkali metals, including how they are stored under oil, how they do not look shiny until cut then quickly go dull, their reaction with water.