5.2.1.3 An ionic compound is a Be familiar with the 1 Describe an ionic Demo the formation of giant structure of ions. structure of sodium compound. sodium chloride in a fume Ionic compounds are chloride but do not need cupboard. held together by strong to know the structures of Draw a diagram of sodium electrostatic forces of other ionic compounds. chloride. Assign students to groups attraction between representing different oppositely charged Deduce that a compound Draw a dot and cross elements. ions. These forces act is ionic from a diagram of diagram for the ionic Each group identifies the in all directions in the its structure in one of the compound formed by atomic number and lattice and this is called specified forms sodium and chlorine. valence electrons for their ionic bonding. Describe the limitations of Ask students to work out element. The structure of sodium using dot and cross, ball the empirical formula of Give each element a chloride can be and stick, two and three ionic compounds from different colour balloon represented in the dimensional diagrams to various models of reflecting the number of following forms: represent a giant ionic elements with their valence electrons. structure. valence electrons. One pupil becomes the Work out the empirical element, with an atomic formula of an ionic number and symbol and compound from a given valence electrons stuck on model or diagram that them. shows the ions in the structure. Students then move WS 1.2 around the room locating their match (some Visualise and represent examples include MgCl2, 2D and 3D forms NaF, MgS, NaCl, CaO and including two dimensional Ne). Once a group has representations of 3D formed a compound they objects. label their compound name
5.2.1.3 An ionic compound is a giant structure of ions. Ionic compounds are held together by strong electrostatic forces of attraction between oppositely charged ions. These forces act in all directions in the lattice and this is called ionic bonding. The structure of sodium chloride can be represented in the following forms: Be familiar with the structure of sodium chloride but do not need to know the structures of other ionic compounds. Deduce that a compound is ionic from a diagram of its structure in one of the specified forms Describe the limitations of using dot and cross, ball and stick, two and three dimensional diagrams to represent a giant ionic structure. Work out the empirical formula of an ionic compound from a given model or diagram that shows the ions in the structure. WS 1.2 Visualise and represent 2D and 3D forms including two dimensional representations of 3D objects. 1 Describe an ionic compound. Draw a diagram of sodium chloride. Draw a dot and cross diagram for the ionic compound formed by sodium and chlorine. Ask students to work out the empirical formula of ionic compounds from various models of elements with their valence electrons. Demo the formation of sodium chloride in a fume cupboard. Assign students to groups representing different elements. Each group identifies the atomic number and valence electrons for their element. Give each element a different colour balloon reflecting the number of valence electrons. One pupil becomes the element, with an atomic number and symbol and valence electrons stuck on them. Students then move around the room locating their match (some examples include MgCl2, NaF, MgS, NaCl, CaO and Ne). Once a group has formed a compound they label their compound name
AQA-8464F-SOW-BOND.DOCX