| Method |
Precise Learning Objective |
Linked |
Question / Activity
(Designed for maximum working out) |
Stepping Stones |
Pitstop Check
(Thinking Map) |
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When a metal atom reacts with a non-metal atom, electrons in the outer shell of the metal atom are transferred. |
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Describe the transfer of electrons in an ionic bond Demo the process of forming an ionic bond using students and tennis balls. |
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Metal atoms lose electrons to become positively charged ions. |
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When a metal atom become an ion it loses electrons. How does this effect its charge? When determining the charge of ions, get students to picture electrons as negative people. Gain more in your life you become more negative, lose them you become more positive. |
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Non-metal atoms gain electrons to become negatively charged ions. |
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When a non-metal atom bonds ionically it gains electrons. How does this effect its charge? Draw out electron structures of elements: 2 metal and 2 non metal elements and then attempt to draw their ions. |
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The ions produced by metals in Groups 1 and 2 and by non-metals in Groups 6 and 7 have the electronic structure of a noble gas (Group 0). |
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What is the electronic structure of ions produced by group 1,2 metals and group 6,7 non metals? Determine trends in ions based on where they are found on the periodic table |
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The electron transfer during the formation of an ionic compound can be represented by a dot and cross diagram. E.g. for sodium chloride. |
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How could you show the formation of an ionic compound using a dot and cross diagram? Give students a compound and get them to attempt to draw out the ions of each element and attempt to determine what a bond may look like. |
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Students should be able to draw dot and cross diagrams for ionic compounds formed by metals in Groups 1 and 2 with non-metals in Groups 6 and 7. |
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Draw a dot cross diagram to show the ionic bond in sodium chloride. |
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The charge on the ions produced by metals in Groups 1 and 2 and by non-metals in Groups 6 and 7 relates to the group number of the element in the periodic table. |
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What charge do ions of elements from the following groups form
1) Group 1
2) Group 2
3) Group 6
4) Group 7 |
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Students should be able to work out the charge on the ions of metals and non-metals from the group number of the element, limited to the metals in Groups 1 and 2, and non-metals in Groups 6 and 7. |
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Explain why potassium chloride is KCl but potassium oxide is K2O Give students several ionic compounds based on the elements they are made up of. Calculate charge on ions and then formula of compound. |
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